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descriptionChess Engine Puzzle (High Difficulty) EmptyChess Engine Puzzle (High Difficulty)

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[fen]8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1[/fen]

White to move and win.

How long does it take for your favorite chess engine to find 1.Nf6+ (Advantage White)?

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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[fen]8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1[/fen]

Haswell-E 8-Core i7-5960X

Analysis by Stockfish 190915 64 BMI2:

1.d8Q Nf7+

-+  (-2.32 --)    Depth: 39/55   00:06:02  7754MN, tb=6829214



Komodo detected 1. Nf6 after about 5,5 minutes and keepth increase the white score afterwards slightly by each update in the engine output.

Analysis by Komodo 9.2 64-bit:

1.Nf6+
+-  (6.32 ++)    Depth: 34   00:09:37  11597MN, tb=129055630


Amazingly Deep Rybka 4 SSE42 x64 deteced the winning line in less than 10 seconds.

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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Intel core i7 2670-QM

Analysis by Komodo 9.1:

1.Nf6+
+- (2.26) Depth: 34 00:08:50 4114mN, tb=11419618

1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8Q Kg4 5.Qe8 c4+ 6.Kc6 Ba3 7.Bd1+ Kh3 8.Qxe3 Nb4+ 9.Kb5 c2 10.g4+ Kh4 11.Bxc2 Nxc2 12.Qf2+ Kh3 13.Qxc2 Bd6 14.Qxc4 Bg3 15.Qc6 Bf4 16.Qxh6+ Kg2
+- (3.20) Depth: 36 00:12:48 5842mN, tb=19540110

Analysis by Deep Rybka Rybka 4.1:

1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8Q Nf7+ 5.Ke6
+- (4.12) Depth: 21 00:01:33 31557kN, tb=19

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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Engine don't seem to understand fortresses.

White to play and draw :)

[fen]8/2B2k2/6p1/5P1p/6p1/p1p3PP/6P1/1n2K2R w K - 0 0[/fen]

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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[fen]8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1[/fen]
Haswell i7-4940MX 4.2GHz

Code:

Analysis by Komodo 9.2 64-bit:

1.Ng4-f6+ Kh7-g7 2.Nf6-h5+ Kg7-g6 3.Nh5-f4+ Kg6-f5 4.Bd1-c2+ Kf5-g4 5.Bc2-d1+ Kg4-f5
  =  (0.00)   Depth: 7   00:00:00  14kN
1.Ng4-f6+ Kh7-g7 2.Nf6-h5+ Kg7-g6 3.Nh5-f4+ Kg6-f5 4.Bd1-c2+ Kf5-g4 5.Bc2-d1+ Kg4xg3 6.Nf4-e2+ Kg3-g4 7.Ne2-g1+ Kg4-g3 8.Ng1-e2+
  =  (0.00)   Depth: 8   00:00:00  94kN
1.Ng4-f6+ Kh7-g7
  =  (-0.07 --)   Depth: 9   00:00:00  163kN
1.Ng4-f6+ Kh7-g7
  =  (-0.14 --)   Depth: 9   00:00:00  184kN
1.Ng4-f6+ Kh7-g7
  =  (-0.24 --)   Depth: 9   00:00:00  199kN
1.Ng4-f6+ Kh7-g7
  =/+  (-0.40 --)   Depth: 9   00:00:00  216kN
1.Ng4-f6+ Kh7-g7
  =/+  (-0.67 --)   Depth: 9   00:00:00  232kN
1.Ng4-f6+ Kh7-g7 2.Nf6-h5+ Kg7-g6 3.Nh5-f4+ Kg6-f5 4.Bd1-c2+ Kf5-g4 5.Bc2-d1+ e3-e2 6.Bd1xe2+ Kg4xg3 7.Be2-c4 Bb4-a5 8.Nf4-e2+ Kg3-g4 9.Bc4xa6 c3-c2 10.Ba6-d3
  -/+  (-0.86)   Depth: 9   00:00:00  249kN
1.Ng4-f6+
  -/+  (-0.79 ++)   Depth: 10   00:00:00  269kN
1.Ng4-f6+ Kh7-g7
  -/+  (-0.86 --)   Depth: 10   00:00:00  275kN
1.Ng4-f6+ Kh7-g7
  -/+  (-0.96 --)   Depth: 10   00:00:00  277kN
1.Ng4-f6+ Kh7-g7
  -/+  (-1.11 --)   Depth: 10   00:00:00  282kN
1.Ng4-f6+ Kh7-g7
  -/+  (-1.33 --)   Depth: 10   00:00:00  291kN
1.Ng4-f6+ Kh7-g7
  -+  (-1.69 --)   Depth: 10   00:00:00  322kN
1.Bd1-c2+ Kh7-g7
  -+  (-1.66 --)   Depth: 10   00:00:00  323kN
1.Bd1-c2+ Kh7-g7 2.Ng4xe3 Ng5-f7+ 3.Kd6-c6 Nf7-d8+ 4.Kc6-b6 Na6-b8 5.Kb6-c7 Nb8-c6 6.Ne3-f5+ Kg7-f7 7.Nf5xh6+ Kf7-e6 8.Bc2-f5+ Ke6-f6 9.Bf5-c2 c5-c4
  -+  (-1.99)   Depth: 10   00:00:00  410kN
1.Ng4xe3 Bb4-a5 2.Bd1-e2 Na6-b8 3.Kd6-e7 Kh7-g7 4.Ne3-f5+ Kg7-g8 5.Be2-d1 Nb8-c6+ 6.Ke7-d6 Nc6-b4 7.Bd1-b3+ Kg8-f8 8.Kd6xc5
  -+  (-1.70)   Depth: 10   00:00:00  471kN
1.Ng4xe3 Bb4-a5
  -+  (-1.77 --)   Depth: 11   00:00:00  500kN, tb=1
1.Ng4xe3 Bb4-a5
  -+  (-1.84 --)   Depth: 11   00:00:00  557kN, tb=1
1.Ng4xe3
  -+  (-1.77 ++)   Depth: 11   00:00:00  644kN, tb=7
1.Ng4xe3 Bb4-a5 2.Bd1-e2 Na6-b8 3.Be2-d3+ Kh7-g7 4.Bd3-f5 Kg7-f6 5.Kd6xc5 Ng5-f7 6.Bf5-h3 Nf7-d8 7.Kc5-c4 Kf6-e5
  -+  (-1.71)   Depth: 11   00:00:00  671kN, tb=7
1.Ng4xe3 Bb4-a5
  -+  (-1.78 --)   Depth: 12   00:00:00  707kN, tb=8
1.Ng4xe3 Bb4-a5
  -+  (-1.85 --)   Depth: 12   00:00:00  730kN, tb=9
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Na6-b8+ 3.Kc6-b5 Ba5-d8 4.Bd1-g4 Kh7-g6 5.Kb5xc5 Ng5-f7 6.Bg4-h3 Nf7-e5 7.Bh3-f5+ Kg6-g5 8.Kc5-b4 Nb8xd7
  -+  (-1.86)   Depth: 12   00:00:00  771kN, tb=12
1.Ng4xe3 Bb4-a5 2.Bd1-e2 Na6-b8 3.Be2-d3+ Kh7-g7 4.Ne3-f5+ Kg7-g6 5.Nf5-e3+ Kg6-f7 6.Bd3-f5 Kf7-f6 7.Kd6xc5 Ng5-f7 8.Bf5-h3 Nf7-e5 9.d7-d8Q+ Ba5xd8 10.Ne3-d5+ Kf6-g6 11.Nd5xc3 Nb8-c6
  -+  (-1.85)   Depth: 13   00:00:00  953kN, tb=36
1.Ng4xe3 Bb4-a5
  -+  (-1.92 --)   Depth: 14   00:00:00  1204kN, tb=107
1.Ng4xe3 Bb4-a5 2.Bd1-e2 Na6-b8 3.Be2-d3+ Kh7-g7 4.Ne3-f5+ Kg7-g6 5.Nf5-e3+ Kg6-f7 6.Bd3-f5 Kf7-f6 7.Kd6xc5 Kf6-e5 8.Bf5-c2 Ba5-c7 9.Kc5-c4 Nb8xd7 10.Ne3-g4+ Ke5-e6 11.Kc4xc3
  -+  (-1.87)   Depth: 14   00:00:00  1299kN, tb=120
1.Ng4xe3 Bb4-a5
  -+  (-1.94 --)   Depth: 15   00:00:00  1501kN, tb=246
1.Ng4xe3 Bb4-a5
  -+  (-2.01 --)   Depth: 15   00:00:00  2002kN, tb=852
1.d7-d8Q
  -+  (-1.87 ++)   Depth: 15   00:00:00  2331kN, tb=1487
1.d7-d8Q
  -+  (-1.77 ++)   Depth: 15   00:00:00  2478kN, tb=2030
1.d7-d8Q
  -+  (-1.62 ++)   Depth: 15   00:00:00  2652kN, tb=2359
1.d7-d8Q Ng5-f7+ 2.Kd6-e7 Nf7xd8 3.Ke7xd8 e3-e2 4.Bd1xe2 Bb4-a5+ 5.Kd8-d7 Na6-b4 6.Ng4-e3 Ba5-b6 7.Be2-d1 c5-c4 8.Ne3-c2 Nb4-d3 9.Nc2-a3 Bb6-c5 10.Na3-b5 Bc5-b4 11.Nb5-d6 Bb4xd6 12.Kd7xd6
  -+  (-1.69)   Depth: 15   00:00:00  2737kN, tb=2531
1.d7-d8Q
  -+  (-1.62 ++)   Depth: 16   00:00:00  2884kN, tb=2801
1.d7-d8Q
  -/+  (-1.55 ++)   Depth: 16   00:00:00  2987kN, tb=3108
1.d7-d8Q Ng5-f7+
  -+  (-1.62 --)   Depth: 16   00:00:00  3049kN, tb=3241
1.d7-d8Q Ng5-f7+
  -+  (-1.77 --)   Depth: 16   00:00:00  3482kN, tb=3663
1.d7-d8Q
  -+  (-1.65 ++)   Depth: 16   00:00:00  3650kN, tb=4125
1.d7-d8Q Ng5-f7+ 2.Kd6-e7 Nf7xd8 3.Ke7xd8 e3-e2 4.Bd1xe2 Bb4-a5+ 5.Kd8-d7 Na6-b4 6.Ng4-e3 Ba5-b6 7.Be2-d1 Kh7-g6 8.Kd7-d6 Bb6-a7 9.Ne3-c2 Nb4-d3 10.Kd6-c6 Ba7-b8 11.Bd1-e2 Nd3-b2 12.g3-g4 Nb2-a4 13.Kc6-d5
  -/+  (-1.56)   Depth: 16   00:00:00  3754kN, tb=4493
1.d7-d8Q
  -/+  (-1.49 ++)   Depth: 17   00:00:00  4051kN, tb=5540
1.d7-d8Q Ng5-f7+
  -/+  (-1.56 --)   Depth: 17   00:00:00  4262kN, tb=6604
1.d7-d8Q Ng5-f7+
  -+  (-1.66 --)   Depth: 17   00:00:00  4510kN, tb=7294
1.d7-d8Q Ng5-f7+
  -+  (-1.81 --)   Depth: 17   00:00:00  4904kN, tb=9835
1.d7-d8Q Ng5-f7+
  -+  (-2.03 --)   Depth: 17   00:00:00  5355kN, tb=11174
1.d7-d8Q Ng5-f7+ 2.Kd6-e7 Nf7xd8 3.Ke7xd8 Bb4-a5+ 4.Kd8-d7 Ba5-c7 5.Ng4xe3 Bc7xg3 6.Kd7-c6 Kh7-g6 7.Kc6-b5 Na6-c7+ 8.Kb5-c4 h6-h5 9.Kc4xc3 Bg3-f2 10.Ne3-c4 h5-h4 11.Bd1-g4 Kg6-g5 12.Bg4-d7 Bf2-d4+ 13.Kc3-d3 Nc7-d5 14.Nc4-d6 Nd5-e3
  -+  (-2.02)   Depth: 17   00:00:00  6017kN, tb=13781
1.d7-d8Q Ng5-f7+
  -+  (-2.09 --)   Depth: 18   00:00:00  6311kN, tb=15840
1.d7-d8Q Ng5-f7+
  -+  (-2.16 --)   Depth: 18   00:00:01  10136kN, tb=27033
1.d7-d8Q Ng5-f7+
  -+  (-2.26 --)   Depth: 18   00:00:01  12282kN, tb=35097
1.d7-d8R Ng5-f7+ 2.Kd6-e7 Nf7xd8 3.Ke7xd8 Bb4-a5+ 4.Kd8-d7 Ba5-c7 5.Ng4xe3 Bc7xg3 6.Kd7-c6 Kh7-g6 7.Kc6-b5 Na6-c7+ 8.Kb5-c4 h6-h5 9.Kc4xc3 Bg3-f2 10.Ne3-c4 h5-h4 11.Bd1-g4 Kg6-g5 12.Bg4-c8 Nc7-d5+ 13.Kc3-d3 Kg5-f4 14.Nc4-d6 Bf2-d4 15.Bc8-h3 Kf4-f3 16.Bh3-f5 Nd5-f4+ 17.Kd3-c4 h4-h3 18.Bf5-e4+
  -+  (-2.15)   Depth: 18   00:00:02  23488kN, tb=47004
1.d7-d8R
  -+  (-2.08 ++)   Depth: 19   00:00:02  23493kN, tb=47005
1.d7-d8R Ng5-f7+ 2.Kd6-e7 Nf7xd8 3.Ke7xd8 Bb4-a5+ 4.Kd8-d7 Ba5-c7 5.Ng4xe3 Bc7xg3 6.Kd7-c6 Kh7-g6 7.Kc6-b5 Na6-b4
  -+  (-2.05)   Depth: 19   00:00:02  23496kN, tb=47007
1.d7-d8R Ng5-f7+
  -+  (-2.13 --)   Depth: 20   00:00:02  24490kN, tb=52036
1.Ng4xe3 Bb4-a5
  -+  (-2.12 --)   Depth: 20   00:00:02  26253kN, tb=59560
1.Ng4xe3 Bb4-a5
  -+  (-2.19 --)   Depth: 20   00:00:02  28984kN, tb=68324
1.Ng4xe3 Bb4-a5
  -+  (-2.29 --)   Depth: 20   00:00:03  34117kN, tb=95172
1.Ng4xe3 Bb4-a5
  -+  (-2.44 --)   Depth: 20   00:00:04  46769kN, tb=137040
1.Kd6-c6
  -+  (-2.20 ++)   Depth: 20   00:00:05  49275kN, tb=144187
1.Kd6-c6 Na6-b8+
  -+  (-2.32 --)   Depth: 20   00:00:05  49748kN, tb=145437
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 Bb4-a5 8.Ke5-f4 Ng3-e2+ 9.Kf4-e4 Ne2-d4 10.Ng4-e3 Kg7-g6 11.Ne3-c2 Nd4-b5 12.Ke4-d5 Ba5-b4 13.Bd1-e2 Nb5-c7+ 14.Kd5-c4 Kg6-f6 15.Be2-f3 Kf6-e5 16.Nc2-e1 Ke5-f4
  -+  (-2.39)   Depth: 20   00:00:05  50061kN, tb=145974
1.Kd6-c6 Na6-b8+
  -+  (-2.46 --)   Depth: 21   00:00:05  50882kN, tb=148898
1.Kd6-c6 Na6-b8+
  -+  (-2.53 --)   Depth: 21   00:00:05  53100kN, tb=156946
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 Bb4-a5 8.Ng4-e3 Kg7-g6 9.Ke5-f4 Ng3-h5+ 10.Kf4-e5 Kg6-g5 11.Ke5-d5 Ba5-b4 12.Kd5-c4 Nh5-f6 13.Ne3-d5 Nf6xd5 14.Kc4xd5 h6-h5 15.Kd5-c6 h5-h4
  -+  (-2.49)   Depth: 21   00:00:07  79612kN, tb=199797
1.Kd6-c6
  -+  (-2.42 ++)   Depth: 22   00:00:07  80790kN, tb=206067
1.Kd6-c6
  -+  (-2.35 ++)   Depth: 22   00:00:07  81674kN, tb=209750
1.Kd6-c6 Na6-b8+
  -+  (-2.42 --)   Depth: 22   00:00:07  82452kN, tb=214081
1.Kd6-c6 Na6-b8+
  -+  (-2.57 --)   Depth: 22   00:00:07  84889kN, tb=224542
1.Ng4xe3
  -+  (-2.33 ++)   Depth: 22   00:00:09  101mN, tb=321900
1.Ng4xe3 Bb4-a5
  -+  (-2.45 --)   Depth: 22   00:00:09  103mN, tb=329407
1.Ng4xe3 Bb4-a5 2.Bd1-e2 Na6-b8 3.Be2-d3+ Kh7-g7 4.Ne3-f5+ Kg7-f8 5.Kd6xc5 Nb8xd7+ 6.Kc5-b5 Ba5-d8 7.Nf5xh6 Ng5-f3 8.Kb5-b4 Bd8-f6 9.Nh6-g4 Bf6-d4 10.Bd3-f5 Kf8-e7 11.Kb4-b3 Ke7-d6 12.Kb3-c2 Nd7-c5 13.Kc2-d1 Nf3-d2 14.Bf5-h7 Nd2-e4 15.Kd1-c2 Ne4xg3 16.Bh7-g6 Ng3-e4
  -+  (-2.57)   Depth: 22   00:00:11  129mN, tb=386869
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 h6-h5 8.Ng4-e3 h5-h4 9.Ke5-f4 Kg7-f6 10.Ne3-d5+ Kf6-e6 11.Nd5-e3 c5-c4 12.Ne3xc4 Bb4-c5 13.Kf4-g4 Ng3-f5 14.Bd1-c2 Nf5-d4 15.Bc2-e4 Bc5-e7 16.Nc4-e3 Ke6-e5 17.Be4-d3 Nd4-c6 18.Ne3-c2 Be7-f6 19.Kg4-f3 Nc6-e7 20.Bd3-f1 Ne7-f5 21.Bf1-h3
  -+  (-2.52)   Depth: 22   00:00:11  129mN, tb=386874
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 h6-h5 8.Ng4-e3 h5-h4 9.Ke5-f4 Kg7-f6 10.Ne3-d5+ Kf6-e6 11.Nd5-e3 c5-c4 12.Ne3xc4 Bb4-c5 13.Kf4-g4 Ng3-f5 14.Bd1-c2 Nf5-d4 15.Bc2-e4 Bc5-e7 16.Nc4-e3 Ke6-e5 17.Be4-d3 Nd4-c6 18.Ne3-c2 Be7-f6 19.Kg4-f3 Nc6-e7 20.Bd3-f1 Ne7-f5
  -+  (-2.52)   Depth: 23   00:00:11  130mN, tb=389832
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 h6-h5 8.Ng4-e3 h5-h4 9.Ke5-f4 Kg7-f6 10.Ne3-d5+ Kf6-e6 11.Nd5-e3 c5-c4 12.Ne3xc4 Bb4-c5 13.Kf4-g4 Ng3-f5 14.Bd1-c2 Nf5-d4 15.Bc2-e4 Bc5-e7 16.Nc4-e3 Ke6-e5 17.Be4-d3 Nd4-c6 18.Ne3-c2 Be7-f6 19.Kg4-f3 Nc6-e7 20.Bd3-f1 Ne7-f5 21.Bf1-h3 Bf6-g5
  -+  (-2.52)   Depth: 24   00:00:12  137mN, tb=424546
1.Kd6-c6 Na6-b8+
  -+  (-2.59 --)   Depth: 25   00:00:13  147mN, tb=487399
1.Kd6-c6 Na6-b8+
  -+  (-2.66 --)   Depth: 25   00:00:18  195mN, tb=743091
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Ba5-d8 3.Kc6-b5 Na6-b8 4.Bd1-c2+ Kh7-g7 5.Ne3-f5+ Kg7-g6 6.Kb5xc5 Nb8xd7+ 7.Kc5-c4 Bd8-f6 8.Nf5-d6+ Kg6-g7 9.Nd6-f5+ Kg7-f7 10.Nf5xh6+ Kf7-e6 11.Bc2-b3 Ng5-f3 12.Nh6-g4 Bf6-g7 13.Kc4-b4+ Ke6-f5 14.Ng4-f2 Nf3-e1 15.Nf2-d1 Ne1-d3+ 16.Kb4-c4 Nd3-b2+ 17.Kc4-b4 Nb2xd1 18.Bb3xd1 Kf5-e4 19.Kb4-c4 Bg7-e5 20.g3-g4 Ke4-f4 21.Kc4-d3 Nd7-c5+ 22.Kd3-c2 Nc5-e4
  -+  (-2.59)   Depth: 25   00:00:19  204mN, tb=779257
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Ba5-d8 3.Kc6-b5 Na6-b8 4.Bd1-c2+ Kh7-g7 5.Ne3-f5+ Kg7-g6 6.Kb5xc5 Nb8xd7+ 7.Kc5-b4 Bd8-f6 8.Nf5-d6+ Kg6-g7 9.Nd6-f5+ Kg7-f8 10.Nf5xh6 Ng5-f3 11.Kb4-b3 Nf3-d4+ 12.Kb3xc3 Nd4-f5+ 13.Kc3-d3 Nf5xh6 14.Kd3-e4 Kf8-e7 15.Bc2-d1 Nh6-f7 16.g3-g4 Nd7-c5+ 17.Ke4-f5 Nc5-d3 18.Kf5-g6 Nd3-f2 19.Bd1-e2 Nf2-e4 20.Be2-d1 Bf6-d4 21.Bd1-b3 Nf7-e5+ 22.Kg6-f5 Ne4-d6+ 23.Kf5-g5
  -+  (-2.64)   Depth: 26   00:00:24  260mN, tb=979985
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 Bb4-a5 8.Ke5-f4 Ng3-e2+ 9.Kf4-e4 Ne2-d4 10.Ng4-e3 Kg7-g6 11.Ne3-c2 Nd4-b5 12.Bd1-e2 Nb5-c7 13.Ke4-e5 h6-h5 14.Ke5-d6 h5-h4 15.Be2-f1 Kg6-g5 16.Kd6xc5 Nc7-e6+ 17.Kc5-b5 Ba5-c7 18.Kb5-c4 Bc7-e5 19.Kc4-d5 Kg5-f6 20.Nc2-e3 Be5-f4 21.Ne3-c2 Bf4-d2 22.Kd5-e4 h4-h3
  -+  (-2.62)   Depth: 26   00:00:24  261mN, tb=984519
1.Kd6-c6 Na6-b8+ 2.Kc6-c7 Nb8xd7 3.Kc7xd7 e3-e2 4.Bd1xe2 Kh7-g7 5.Be2-d1 Ng5-e4 6.Kd7-e6 Ne4xg3 7.Ke6-e5 Bb4-a5 8.Ke5-f4 Ng3-e2+ 9.Kf4-e4 Ne2-d4 10.Ng4-e3 Kg7-g6 11.Ne3-c2 Nd4-b5 12.Bd1-e2 Nb5-c7 13.Ke4-e5 h6-h5 14.Ke5-d6 h5-h4 15.Be2-f1 Kg6-g5 16.Kd6xc5 Nc7-e6+ 17.Kc5-b5 Ba5-c7 18.Kb5-c4 Bc7-e5 19.Kc4-d5 Kg5-f6 20.Nc2-e3 Be5-f4 21.Ne3-c2 Bf4-d2 22.Kd5-e4 h4-h3
  -+  (-2.62)   Depth: 27   00:00:25  267mN, tb=1020367
1.Kd6-c6 Na6-b8+
  -+  (-2.69 --)   Depth: 28   00:00:27  282mN, tb=1114570
1.Kd6-c6 Na6-b8+
  -+  (-2.76 --)   Depth: 28   00:00:37  371mN, tb=1634358
1.Kd6-c6 Na6-b8+
  -+  (-2.86 --)   Depth: 28   00:00:48  474mN, tb=2393742
1.Kd6-c6 Na6-b8+
  -+  (-3.01 --)   Depth: 28   00:01:00  585mN, tb=3245755
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Ba5-d8 3.Bd1-c2+ Kh7-g7 4.Kc6-b5 Na6-b8 5.Kb5xc5 Nb8xd7+ 6.Kc5-c4 Bd8-f6 7.Ne3-f5+ Kg7-f7 8.Nf5xh6+ Kf7-e6 9.Kc4-b4 Ng5-f3 10.Bc2-b3+ Ke6-d6 11.g3-g4 Nd7-c5 12.Nh6-f5+ Kd6-c6 13.Bb3-c2 Nf3-e1 14.Nf5-e3 Bf6-d4 15.Bc2-g6 Ne1-d3+ 16.Kb4-c4 Bd4xe3 17.Kc4xc3 Nd3-e5 18.Bg6-f5 Be3-g5 19.Kc3-b4 Bg5-d2+ 20.Kb4-a3 Kc6-d5 21.Ka3-b2 Nc5-e4 22.Kb2-c2 Bd2-e1
  -+  (-3.00)   Depth: 28   00:01:17  734mN, tb=4328730
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Ba5-d8 3.Bd1-c2+ Kh7-g7 4.Kc6-b5 Na6-b8 5.Kb5xc5 Nb8xd7+ 6.Kc5-c4 Bd8-f6 7.Ne3-f5+ Kg7-f7 8.Nf5xh6+ Kf7-e6 9.Bc2-b3 Ng5-e4 10.Nh6-g4 Bf6-g7 11.Kc4-b4+ Ke6-d6 12.Ng4-e3 Ne4xg3 13.Kb4-c4 Nd7-c5 14.Bb3-c2 Bg7-h8 15.Bc2-d1 Ng3-e4 16.Ne3-f5+ Kd6-e5 17.Nf5-e7 Ke5-e6 18.Ne7-d5 Bh8-g7 19.Nd5-e3 Ke6-e5 20.Ne3-d5 Ke5-d6
  -+  (-3.02)   Depth: 29   00:01:23  793mN, tb=4684708
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Ba5-d8 3.Bd1-c2+ Kh7-g7 4.Kc6-b5 Na6-b8 5.Kb5xc5 Nb8xd7+ 6.Kc5-c4 Bd8-f6 7.Ne3-f5+ Kg7-f7 8.Nf5xh6+ Kf7-e6 9.Bc2-b3 Ng5-e4 10.Nh6-g4 Bf6-g7 11.Kc4-b5+ Ke6-d6 12.Ng4-e3 Nd7-c5 13.Bb3-c2 Ne4xg3 14.Kb5-c4 Bg7-e5 15.Bc2-d1 Nc5-e4 16.Bd1-a4 Be5-g7 17.Ba4-c2 Kd6-e6 18.Ne3-g2 Ne4-d2+ 19.Kc4-d3 Ng3-e4 20.Ng2-f4+ Ke6-d6 21.Kd3-e3 Ne4-c5 22.Bc2-g6
  -+  (-3.03)   Depth: 30   00:01:48  1015mN, tb=6250645
1.Ng4xe3 Bb4-a5
  -+  (-3.10 --)   Depth: 31   00:02:08  1201mN, tb=7824163
1.Ng4xe3
  -+  (-3.03 ++)   Depth: 31   00:02:14  1251mN, tb=8144507
1.Ng4xe3 Bb4-a5
  -+  (-3.10 --)   Depth: 31   00:02:21  1323mN, tb=8663021
1.Ng4xe3 Bb4-a5 2.Kd6-c6 Ba5-d8 3.Kc6-b5 Na6-b8 4.Bd1-c2+ Kh7-g7 5.Kb5xc5 Nb8xd7+ 6.Kc5-c4 Bd8-f6 7.Ne3-f5+ Kg7-f7 8.Nf5xh6+ Kf7-e6 9.Kc4-d3 Nd7-c5+ 10.Kd3-c4 Nc5-e4 11.Nh6-g4 Bf6-g7 12.Ng4-e3 Ne4xg3 13.Kc4-d3 Ng5-f3 14.Ne3-g2 Nf3-d2 15.Bc2-d1 Nd2-e4 16.Bd1-c2 Ke6-d6 17.Kd3-c4 Ne4-d2+ 18.Kc4-d3 Ng3-e4 19.Kd3-e3 Ne4-c5 20.Ke3-e2 Nd2-c4 21.Bc2-f5 Bg7-d4 22.Bf5-c2 Kd6-e5
  -+  (-3.18)   Depth: 31   00:02:46  1541mN, tb=9973445
1.Ng4xe3 Bb4-a5
  -+  (-3.25 --)   Depth: 32   00:03:29  1938mN, tb=12667121
1.Ng4-f6+
  -+  (-3.11 ++)   Depth: 32   00:03:41  2044mN, tb=13357107
1.Ng4-f6+
  -+  (-3.04 ++)   Depth: 32   00:03:45  2078mN, tb=13703151
1.Ng4-f6+
  -+  (-2.94 ++)   Depth: 32   00:03:46  2094mN, tb=13792726
1.Ng4-f6+
  -+  (-2.79 ++)   Depth: 32   00:03:48  2111mN, tb=13931063
1.Ng4-f6+
  -+  (-2.57 ++)   Depth: 32   00:03:51  2136mN, tb=14110795
1.Ng4-f6+
  -+  (-2.24 ++)   Depth: 32   00:03:56  2179mN, tb=14464405
1.Ng4-f6+
  -+  (-1.75 ++)   Depth: 32   00:04:04  2259mN, tb=15105551
1.Ng4-f6+
  -/+  (-1.02 ++)   Depth: 32   00:04:11  2314mN, tb=15595359
1.Ng4-f6+
  =  (0.07 ++)   Depth: 32   00:04:22  2410mN, tb=16542188
1.Ng4-f6+
  +-  (1.70 ++)   Depth: 32   00:04:30  2480mN, tb=17310912
1.Ng4-f6+ Kh7-g7 2.Nf6-h5+ Kg7-g6 3.Bd1-c2+ Kg6xh5 4.d7-d8Q Kh5-g4 5.Qd8-e8 c5-c4+ 6.Kd6-c6 Bb4-a3 7.Bc2-d1+ Kg4-h3 8.Qe8xe3 Na6-b4+ 9.Kc6-b5 Nb4-d3 10.Qe3-d4 Kh3-g2 11.Qd4xc3 Nd3-f2 12.Qc3xc4 Ba3-b2 13.Qc4-d5+ Kg2-g1 14.Bd1-c2 Bb2-c3 15.Bc2-f5 Bc3-e1 16.Qd5-c4 Be1-d2 17.Bf5-g6 Ng5-h3 18.Qc4-e2 Bd2-c3 19.Qe2-e3 Bc3-g7 20.Bg6-f5 Nh3-g5 21.Qe3-c1+ Kg1-h2 22.Qc1-c5 Kh2-g1 23.Qc5-c6 Nf2-h1 24.g3-g4 Nh1-f2 25.Qc6-c7 Bg7-f8 26.Qc7-g3+ Kg1-f1
  +-  (3.59)   Depth: 32   00:05:16  2886mN, tb=23194188

(Russell, Philadelphia 22.09.2015)


10 years ago HIARCS found it at depth 16/47 after 01day:22hr:08m and 835 million nodes (=230 kN/sec)

Code:

Analysis by Hiarcs 8:
...
1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg8 4.Ke7 Nc6+ 5.Kd6 Nd8 6.Kxc5
-+ (-2.98) Depth: 8/29 00:00:04 778kN
1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg8 4.Bf5 Kf7 5.Kxc5 Ke7 6.Nc4
-+ (-3.02) Depth: 9/29 00:00:08 1423kN
1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg7 4.Nf5+ Kg6 5.Ne3+ Kf7 6.Nf5 h5
-+ (-3.02) Depth: 10/29 00:00:19 3339kN
1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg7 4.Nf5+ Kg6 5.Ne3+ Kf7 6.Nc4 Bd8 7.Ne5+ Kf6
8.Ng4+ Kg7
-+ (-3.13) Depth: 11/30 00:00:46 8237kN
1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Ba4 Ba5 5.Kxc5 Kg6 6.Bb5 Kf6
-+ (-2.97) Depth: 11/32 00:01:20 14141kN
1.Kc6 Ne6
-+ (-2.72) Depth: 12/33 00:01:58 20333kN, tb=3
1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Ba4 Ba5 5.Kxc5 Kg6 6.Kc4 Ndc6 7.Nd5 Ne5+ 8.Kb5
-+ (-2.62) Depth: 12/33 00:02:04 21450kN, tb=3
1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Bf3 Na6 5.Be2 Nb8 6.Bb5 Ba5 7.Kxc5 Kg6 8.Nc2
-+ (-2.63) Depth: 13/37 00:04:22 45676kN, tb=12
1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Bf3 Na6 5.Be2 c4+ 6.Kd5 Ba5 7.Kxc4 Nb8 8.Bg4
Kg6
-+ (-2.60) Depth: 14/41 00:09:46 101762kN, tb=195
1.d8Q Nf7+ 2.Ke7 Nxd8 3.Kxd8 Ba5+ 4.Kd7 Bc7 5.Nxe3 Bxg3 6.Nd5 Be5 7.Kc6 Kg6
8.Bc2+ Kg5 9.Kb5 Nb4 10.Nxb4
-+ (-2.59) Depth: 14/42 00:20:52 214470kN, tb=1238
1.d8Q Nf7+ 2.Ke7 Nxd8 3.Kxd8 Ba5+ 4.Kd7 Bc7 5.Nxe3 Bxg3 6.Bc2+ Kh8 7.Nd5 Nb4
8.Nxb4 cxb4 9.Ke6 Kg7 10.Kf5 h5
-+ (-2.52) Depth: 15/42 00:25:36 259117kN, tb=4086
1.d8Q Nf7+ 2.Ke7 Nxd8 3.Kxd8 Ba5+ 4.Kd7 Bc7 5.Nxe3 Bxg3 6.Nd5 Be5 7.Kc6 Bd4
8.Kb5 Nb8 9.Kc4 h5 10.Bf3 h4 11.Nxc3 Bxc3 12.Kxc3
-+ (-2.52) Depth: 16/46 00:57:12 580307kN, tb=15373
1.Nf6+ Kg7
-+ (-2.27) Depth: 16/47 01:22:08 834815kN, tb=19955
1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8Q Kg4 5.Kc6 Nf3 6.Qg8+ Kh3 7.Qe6+ Kg2
8.Qxe3 Nd4+ 9.Kb7 Nxc2 10.Qe2+ Kxg3 11.Qxc2
± (1.30) Depth: 16/49 06:32:01 4294836396kN, tb=82936

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

more_horiz
White to play and win!

For some strange reasons the PV won't display winning advantage here. I think there is some "Castling" issues in PV.

[fen]5k2/8/4PP2/8/7B/8/p6r/4K2R w K - 0 1[/fen]

[fen]4r3/3kp1Pn/5pN1/5P2/3b4/7N/8/R3K3 w Q - 0 0[/fen]

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

more_horiz
[fen]8/2B2k2/6p1/5P1p/6p1/p1p3PP/6P1/1n2K2R w K - 0 1[/fen]
After 1 hour and 8 minutes at Dept=51

Code:

Analysis by Komodo 9.2 64-bit:

1.Bc7-e5 a3-a2
  =/+  (-0.59 --)   Depth: 7   00:00:00  17kN
1.Bc7-e5 a3-a2
  =/+  (-0.69 --)   Depth: 7   00:00:00  18kN
1.Bc7-e5 a3-a2
  -/+  (-0.79 --)   Depth: 7   00:00:00  18kN
1.Bc7-e5 a3-a2
  -/+  (-0.98 --)   Depth: 7   00:00:00  19kN
1.f5xg6+
  -/+  (-0.97 --)   Depth: 7   00:00:00  19kN
1.h3xg4
  -/+  (-0.96 --)   Depth: 7   00:00:00  19kN
1.h3xg4 a3-a2
  -/+  (-1.29 --)   Depth: 7   00:00:00  19kN
1.h3xg4 a3-a2
  -+  (-1.63 --)   Depth: 7   00:00:00  21kN
1.h3xg4 a3-a2
  -+  (-2.12 --)   Depth: 7   00:00:00  24kN
1.f5xg6+
  =  (-0.15 ++)   Depth: 7   00:00:00  25kN
1.f5xg6+
  +/=  (0.60 ++)   Depth: 7   00:00:00  25kN
1.f5xg6+ Kf7-g8 2.Bc7-e5 a3-a2 3.Be5xc3 Nb1xc3 4.Ke1-f2 Kg8-g7 5.h3xg4
  +/=  (0.65)   Depth: 7   00:00:00  26kN
1.f5xg6+ Kf7-g8
  +/=  (0.55 --)   Depth: 8   00:00:00  27kN
1.f5xg6+ Kf7-g8
  +/=  (0.45 --)   Depth: 8   00:00:00  29kN
1.f5xg6+ Kf7-g8 2.Bc7-e5 a3-a2 3.Be5xc3 Nb1xc3 4.Ke1-f2 Kg8-g7 5.Kf2-e3 Nc3-b1
  +/=  (0.40)   Depth: 8   00:00:00  30kN
1.f5xg6+ Kf7-g8
  +/=  (0.33 --)   Depth: 9   00:00:00  65kN, tb=2
1.f5xg6+ Kf7-g8
  =  (0.21 --)   Depth: 9   00:00:00  66kN, tb=2
1.f5xg6+ Kf7-g8
  =  (-0.26 --)   Depth: 9   00:00:00  66kN, tb=2
1.f5xg6+ Kf7-g8
  =/+  (-0.55 --)   Depth: 9   00:00:00  66kN, tb=2
1.f5xg6+ Kf7-g8
  -/+  (-0.90 --)   Depth: 9   00:00:00  67kN, tb=5
1.h3xg4 a3-a2
  -/+  (-0.82 --)   Depth: 9   00:00:00  68kN, tb=5
1.h3xg4 a3-a2
  -/+  (-1.15 --)   Depth: 9   00:00:00  71kN, tb=8
1.h3xg4 a3-a2
  -+  (-1.64 --)   Depth: 9   00:00:00  74kN, tb=11
1.h3xg4 a3-a2
  -+  (-2.37 --)   Depth: 9   00:00:00  101kN, tb=20
1.h3xg4 a3-a2 2.f5xg6+ Kf7-g8 3.g4xh5 a2-a1Q 4.Ke1-e2 c3-c2 5.Rh1-c1 Nb1-c3+ 6.Ke2-d3 Qa1xc1 7.Kd3xc3 Qc1-d1 8.Bc7-f4
  -+  (-3.07)   Depth: 9   00:00:00  299kN, tb=40
1.f5xg6+ Kf7-g8 2.Bc7-e5 a3-a2 3.Be5xc3 Nb1xc3 4.Ke1-f2 Nc3-b1 5.h3xg4 a2-a1Q 6.g4xh5 Qa1-d4+ 7.Kf2-f3
  -+  (-2.34)   Depth: 9   00:00:00  325kN, tb=40
1.f5xg6+
  -+  (-2.27 ++)   Depth: 10   00:00:00  353kN, tb=40
1.f5xg6+
  -+  (-2.20 ++)   Depth: 10   00:00:00  362kN, tb=40
1.f5xg6+
  -+  (-2.10 ++)   Depth: 10   00:00:00  364kN, tb=40
1.f5xg6+
  -+  (-1.95 ++)   Depth: 10   00:00:00  367kN, tb=40
1.f5xg6+
  -+  (-1.73 ++)   Depth: 10   00:00:00  370kN, tb=40
1.f5xg6+ Kf7xg6
  -+  (-1.89 --)   Depth: 10   00:00:00  381kN, tb=44
1.f5xg6+ Kf7xg6
  -+  (-2.38 --)   Depth: 10   00:00:00  398kN, tb=53
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.Bc7-f4 a2-a1Q 5.0-0 Qa1-a7+ 6.Kg1-h1 c3-c2 7.g3-g4 Qa7-d7 8.g4-g5
  -+  (-2.41)   Depth: 10   00:00:00  428kN, tb=56
1.f5xg6+ Kf7xg6
  -+  (-2.48 --)   Depth: 11   00:00:00  446kN, tb=68
1.f5xg6+ Kf7xg6
  -+  (-2.55 --)   Depth: 11   00:00:00  474kN, tb=97
1.f5xg6+
  -+  (-2.48 ++)   Depth: 11   00:00:00  493kN, tb=104
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.Bc7-f4 a2-a1Q 5.0-0 c3-c2 6.Kg1-h2 Qa1-c3 7.Rf1-f3 Qc3-e1 8.Rf3-b3 Nb1-d2 9.Rb3-b7+
  -+  (-2.48)   Depth: 11   00:00:00  500kN, tb=104
1.f5xg6+ Kf7xg6
  -+  (-2.55 --)   Depth: 12   00:00:00  511kN, tb=104
1.f5xg6+
  -+  (-2.48 ++)   Depth: 12   00:00:00  549kN, tb=125
1.f5xg6+ Kf7xg6
  -+  (-2.55 --)   Depth: 12   00:00:00  563kN, tb=129
1.f5xg6+ Kf7xg6
  -+  (-2.70 --)   Depth: 12   00:00:00  644kN, tb=160
1.f5xg6+
  -+  (-2.58 ++)   Depth: 12   00:00:00  782kN, tb=213
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Kg1-h2 Qa1-a7 6.Bc7-f4 Nb1-d2 7.Rf1-c1 Qa7-d4 8.Kh2-h3 Nd2-e4 9.g3-g4
  -+  (-2.58)   Depth: 12   00:00:00  796kN, tb=214
1.f5xg6+ Kf7xg6
  -+  (-2.65 --)   Depth: 13   00:00:00  833kN, tb=223
1.f5xg6+ Kf7xg6
  -+  (-2.72 --)   Depth: 13   00:00:00  920kN, tb=269
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Kg1-h2 c3-c2 6.Rf1-c1 Qa1-b2 7.Bc7-f4 Nb1-c3 8.Rc1-e1 Nc3-d5 9.Bf4-c1 Qb2-c3
  -+  (-2.73)   Depth: 13   00:00:00  967kN, tb=300
1.f5xg6+
  -+  (-2.66 ++)   Depth: 14   00:00:00  984kN, tb=307
1.f5xg6+
  -+  (-2.59 ++)   Depth: 14   00:00:00  992kN, tb=313
1.f5xg6+ Kf7xg6
  -+  (-2.66 --)   Depth: 14   00:00:00  1041kN, tb=340
1.f5xg6+ Kf7xg6
  -+  (-2.81 --)   Depth: 14   00:00:00  1205kN, tb=563
1.f5xg6+
  -+  (-2.69 ++)   Depth: 14   00:00:00  1308kN, tb=684
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Rf1-f5 c3-c2 8.Be5-f4 Nb1-c3 9.Bf4-g5 Qe7-e2 10.Bg5-f4 Qe2-d1 11.h5-h6 Nc3-d5 12.Rf5-f7+ Kh7-g6 13.Rf7-g7+ Kg6-f5
  -+  (-2.77)   Depth: 14   00:00:00  1352kN, tb=700
1.f5xg6+
  -+  (-2.70 ++)   Depth: 15   00:00:00  1383kN, tb=728
1.f5xg6+ Kf7xg6
  -+  (-2.77 --)   Depth: 15   00:00:00  1505kN, tb=791
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Rf1-f5 c3-c2 8.Be5-f4 Nb1-c3 9.Bf4-g5 Qe7-g7 10.Rf5-c5 Nc3-e2 11.g3-g4 Qg7xg5 12.Rc5xg5
  -+  (-2.78)   Depth: 15   00:00:00  1601kN, tb=843
1.f5xg6+ Kf7xg6
  -+  (-2.85 --)   Depth: 16   00:00:00  1795kN, tb=1100
1.f5xg6+ Kf7xg6
  -+  (-2.92 --)   Depth: 16   00:00:00  2166kN, tb=1614
1.f5xg6+
  -+  (-2.85 ++)   Depth: 16   00:00:00  2433kN, tb=1900
1.f5xg6+
  -+  (-2.70 ++)   Depth: 16   00:00:00  2505kN, tb=2000
1.f5xg6+ Kf7xg6
  -+  (-2.81 --)   Depth: 16   00:00:00  2578kN, tb=2109
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Kg1-h2 c3-c2 6.Rf1-c1 Qa1-c3 7.Bc7-f4 Qc3-c4 8.Kh2-h3 Qc4-e4 9.Bf4-g5 Nb1-c3 10.Rc1-a1 Qe4-d4 11.Ra1-a6 Nc3-e4 12.Ra6-h6+ Kh7-g7 13.Bg5-f4
  -+  (-3.01)   Depth: 16   00:00:00  2910kN, tb=2605
1.f5xg6+ Kf7xg6
  -+  (-3.08 --)   Depth: 17   00:00:00  3365kN, tb=3259
1.f5xg6+ Kf7xg6
  -+  (-3.15 --)   Depth: 17   00:00:00  4227kN, tb=5229
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f5 Nb1-d2 9.g3-g4 c3-c2 10.Bf6-b2 Qf7-c7+ 11.g2-g3 Nd2-e4 12.Rf5-f4 Qc7-c4 13.Kh2-h3 Qc4-b3
  -+  (-3.17)   Depth: 17   00:00:00  4828kN, tb=7464
1.h3xg4 a3-a2 2.f5xg6+ Kf7xg6 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f5 Nb1-d2 9.g3-g4 c3-c2 10.Bf6-b2 Qf7-c7+ 11.g2-g3 Nd2-e4 12.Rf5-f4 Qc7-c4 13.Kh2-h3 Qc4-b3 14.Rf4xe4
  -+  (-3.16)   Depth: 17   00:00:00  6951kN, tb=9297
1.h3xg4 a3-a2
  -+  (-3.23 --)   Depth: 18   00:00:00  7859kN, tb=11661
1.h3xg4 a3-a2
  -+  (-3.30 --)   Depth: 18   00:00:00  9066kN, tb=14835
1.h3xg4 a3-a2 2.f5xg6+ Kf7xg6 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b3 10.Bb2-c1 Nb1-c3 11.Rf4-f3 Qb3-d5 12.g3-g4 Nc3-e2 13.Bc1-e3 Qd5-e5+ 14.g2-g3 Qe5-e4 15.Kh2-g2 Qe4xg4
  -+  (-3.31)   Depth: 18   00:00:01  10408kN, tb=18779
1.h3xg4 a3-a2
  -+  (-3.38 --)   Depth: 19   00:00:01  11949kN, tb=22347
1.h3xg4
  -+  (-3.31 ++)   Depth: 19   00:00:01  13157kN, tb=25649
1.h3xg4 a3-a2
  -+  (-3.38 --)   Depth: 19   00:00:01  13952kN, tb=29310
1.h3xg4 a3-a2
  -+  (-3.53 --)   Depth: 19   00:00:01  16001kN, tb=38063
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b3 10.Bb2-c1 Nb1-c3 11.Rf4-f6 Nc3-e2 12.Rf6-h6+ Kh7-g7 13.Rh6-g6+ Kg7-f7 14.Bc1-h6 Qb3-c3 15.Kh2-h3 Qc3-e5 16.Kh3-h4
  -+  (-3.47)   Depth: 19   00:00:01  16012kN, tb=38078
1.f5xg6+ Kf7xg6
  -+  (-3.54 --)   Depth: 20   00:00:01  17365kN, tb=44604
1.f5xg6+ Kf7xg6
  -+  (-3.61 --)   Depth: 20   00:00:02  19483kN, tb=53065
1.f5xg6+ Kf7xg6
  -+  (-3.71 --)   Depth: 20   00:00:02  22019kN, tb=61725
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b3 10.Bb2-c1 Qb3-d5 11.Kh2-h3 Nb1-c3 12.Rf4-g4 Qd5-d1 13.Rg4-c4 Qd1xc1 14.Rc4-c7+ Kh7-h6 15.Rc7-c6+ Kh6xh5 16.g3-g4+ Kh5-g5 17.Rc6-c5+
  -+  (-3.64)   Depth: 20   00:00:02  23334kN, tb=65890
1.f5xg6+ Kf7xg6
  -+  (-3.71 --)   Depth: 21   00:00:02  24151kN, tb=68612
1.f5xg6+ Kf7xg6
  -+  (-3.78 --)   Depth: 21   00:00:03  28955kN, tb=90541
1.f5xg6+ Kf7xg6
  -+  (-3.88 --)   Depth: 21   00:00:03  31594kN, tb=98096
1.f5xg6+
  -+  (-3.79 ++)   Depth: 21   00:00:03  34163kN, tb=107753
1.f5xg6+ Kf7xg6
  -+  (-3.91 --)   Depth: 21   00:00:03  36110kN, tb=116016
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b7 10.Bb2-c1 Qb7-d5 11.g3-g4 Nb1-c3 12.Rf4-f2 Qd5-d1 13.Bc1-e3 Qd1xg4 14.Rf2-f3 Nc3-b1 15.h5-h6
  -+  (-4.02)   Depth: 21   00:00:04  38236kN, tb=124133
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b7 10.Bb2-c1 Qb7-d5 11.g3-g4 Nb1-c3 12.Rf4-f2 Qd5-d1 13.Bc1-e3 Qd1xg4 14.Rf2-f3 Nc3-b1 15.h5-h6 Qg4-h4+ 16.Rf3-h3 Qh4-e1 17.Rh3-f3
  -+  (-4.02)   Depth: 22   00:00:04  38834kN, tb=125923
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b7 10.Bb2-c1 Qb7-d5 11.g3-g4 Nb1-c3 12.Rf4-f2 Qd5-d1 13.Bc1-e3 Qd1xg4 14.Rf2-f3 Nc3-b1 15.h5-h6 Qg4-h4+ 16.Rf3-h3 Qh4-e1 17.Rh3-f3 Nb1-d2 18.Rf3-f7+ Kh7-g8 19.Rf7-g7+ Kg8-h8
  -+  (-4.04)   Depth: 23   00:00:05  46317kN, tb=170194
1.f5xg6+ Kf7xg6
  -+  (-4.11 --)   Depth: 24   00:00:06  54824kN, tb=202759
1.f5xg6+ Kf7xg6 2.h3xg4 a3-a2 3.g4xh5+ Kg6-h7 4.0-0 a2-a1Q 5.Bc7-e5 Qa1-a7+ 6.Kg1-h2 Qa7-e7 7.Be5-f6 Qe7-f7 8.Rf1-f4 c3-c2 9.Bf6-b2 Qf7-b3 10.Bb2-c1 Qb3-d5 11.g3-g4 Nb1-c3 12.Rf4-f5 Qd5-d1 13.Bc1-e3 Qd1xg4 14.Rf5-f3 Nc3-b1 15.Rf3-g3 Qg4-h4+ 16.Rg3-h3 Qh4-e1 17.Be3-f4 Nb1-d2 18.Bf4xd2
  -+  (-4.12)   Depth: 24   00:00:06  60585kN, tb=227138
1.f5xg6+ Kf7xg6
  -+  (-4.19 --)   Depth: 25   00:00:07  67744kN, tb=260480
1.f5xg6+ Kf7xg6
  -+  (-4.26 --)   Depth: 25   00:00:08  78209kN, tb=301786
1.f5xg6+ Kf7xg6
  -+  (-4.36 --)   Depth: 25   00:00:10  90611kN, tb=352618
1.f5xg6+ Kf7xg6
  -+  (-4.51 --)   Depth: 25   00:00:11  105mN, tb=418573
1.f5xg6+ Kf7xg6
  -+  (-4.73 --)   Depth: 25   00:00:13  122mN, tb=498149
1.Bc7-e5
  -+  (-4.39 ++)   Depth: 25   00:00:15  137mN, tb=589029
1.Bc7-e5
  -+  (-4.06 ++)   Depth: 25   00:00:15  140mN, tb=601292
1.Bc7-e5
  -+  (-3.57 ++)   Depth: 25   00:00:15  140mN, tb=602086
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-d5 10.Rb1-d1 Qd5-b5 11.Rd1-b1 Qb5-e5 12.Rb1-c1 Qe5-d6 13.Rc1-e1 Kf5-g6 14.Re1-c1 Qd6-d5 15.Rc1-c7 Kg6-f6 16.Rc7-c8 Kf6-f7
  -+  (-3.52)   Depth: 25   00:00:16  142mN, tb=608395
1.Bc7-e5
  -+  (-3.45 ++)   Depth: 26   00:00:17  151mN, tb=672006
1.Bc7-e5 a3-a2
  -+  (-3.52 --)   Depth: 26   00:00:17  153mN, tb=684160
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-c5 10.Rb1-e1 Qc5-b5 11.Re1-e7 Kf5-f6 12.Re7-e1 Kf6-f7 13.Re1-c1 Kf7-g6 14.Rc1-a1 Kg6-f5 15.Ra1-e1 Qb5-c4 16.Re1-e7 Qc4-d5 17.Re7-e1 Qd5-c6
  -+  (-3.52)   Depth: 26   00:00:18  161mN, tb=715319
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-c5 10.Rb1-e1 Qc5-b5 11.Re1-e7 Kf5-f6 12.Re7-e1 Kf6-f7 13.Re1-c1 Kf7-g6 14.Rc1-a1 Kg6-f5 15.Ra1-e1 Qb5-c4 16.Re1-e7 Qc4-d5 17.Re7-e1 Qd5-c6 18.Re1-e7
  -+  (-3.52)   Depth: 27   00:00:18  167mN, tb=750528
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-c5 10.Rb1-e1 Qc5-b5 11.Re1-e7 Qb5-c6 12.Re7-e1 Qc6-c3 13.Re1-e2 Qc3-d3 14.Re2-e1 Qd3-c4 15.Re1-e7 Qc4-d5 16.Re7-e8 Qd5-d7 17.Re8-e1 Qd7-c6 18.Re1-b1 Qc6-a6 19.Rb1-d1
  -+  (-3.51)   Depth: 28   00:00:20  183mN, tb=863895
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-c5 10.Rb1-e1 Qc5-b5 11.Re1-e7 Qb5-c6 12.Re7-e1 Qc6-c3 13.Re1-e2 Qc3-d3 14.Re2-e1 Kf5-f6 15.Re1-a1 Qd3-b5 16.Ra1-e1 Qb5-c5 17.Re1-e8 Qc5-d5 18.Re8-e1 Qd5-b5 19.Re1-e4
  -+  (-3.52)   Depth: 29   00:00:23  204mN, tb=1006079
1.Bc7-e5
  -+  (-3.45 ++)   Depth: 30   00:00:25  225mN, tb=1170303
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-a5 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qa5-b5 9.Re1-e7 Qb5-c6 10.Re7-e1 Qc6-c5 11.Re1-e8 Qc5-c7 12.Re8-e1 Qc7-c4 13.Re1-e8 Qc4-d5 14.Re8-e1 Qd5-c6 15.Re1-e7 Qc6-b5 16.Re7-e3 Kf5-f6 17.Re3-e1 Qb5-d5 18.Re1-b1 Kf6-g6 19.Rb1-e1
  -+  (-3.45)   Depth: 30   00:00:25  225mN, tb=1171773
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-a5 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qa5-b5 9.Re1-e7 Qb5-c6 10.Re7-e1 Qc6-c5 11.Re1-e8 Qc5-c7 12.Re8-e1 Qc7-c4 13.Re1-e8 Qc4-d5 14.Re8-e1 Qd5-c6 15.Re1-e7 Kf5-f6 16.Re7-e3 Qc6-a4 17.Re3-e1 Qa4-b5 18.Re1-e4 Qb5-d7 19.Re4-e1 Qd7-d4
  -+  (-3.46)   Depth: 31   00:00:30  273mN, tb=1563890
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-a5 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qa5-b5 9.Re1-e7 Qb5-c6 10.Re7-e1 Kf5-f6 11.Re1-e3 Qc6-d7 12.Re3-e1 Qd7-b5 13.Re1-b1 Qb5-e5 14.Rb1-f1+ Kf6-g6 15.Rf1-f8 Qe5-d5 16.Rf8-f1 Qd5-c6 17.Rf1-d1 Qc6-b5 18.Rd1-d8 Kg6-f5 19.Rd8-g8 Kf5-e4 20.Rg8-g5 Qb5-e8
  -+  (-3.47)   Depth: 32   00:00:34  304mN, tb=1787656
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-a5 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qa5-b5 9.Re1-e7 Qb5-c6 10.Re7-e1 Qc6-c7 11.Re1-e8 Qc7-d7 12.Re8-e1 Qd7-c6 13.Re1-e7 Qc6-b5 14.Re7-e1 Kf5-f6 15.Re1-e3 Qb5-d5 16.Re3-e1 Qd5-d4 17.Re1-e8 Qd4-c4 18.Re8-a8 Qc4-d5 19.Ra8-e8 Kf6-g6 20.Re8-e7 Kg6-f5
  -+  (-3.47)   Depth: 33   00:00:40  359mN, tb=2286241
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-a5 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qa5-b5 9.Re1-e7 Qb5-c6 10.Re7-e1 Qc6-c7 11.Re1-e8 Qc7-d7 12.Re8-e1 Qd7-c6 13.Re1-e7 Qc6-b5 14.Re7-e3 Kf5-f6 15.Re3-e1 Qb5-c5 16.Re1-e8 Qc5-c4 17.Re8-e1 Qc4-d5 18.Re1-e2 Qd5-d7 19.Re2-e1 Qd7-b5 20.Re1-e3 Qb5-a5 21.Re3-e8 Qa5-d5
  -+  (-3.47)   Depth: 34   00:00:54  481mN, tb=3172624
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-d5 10.Rb1-e1 Qd5-d6 11.Re1-e8 Qd6-d7 12.Re8-e1 Qd7-d5 13.Re1-f1+ Kf5-g6 14.Rf1-e1 Qd5-b5 15.Re1-e7 Kg6-f6 16.Re7-e3 Qb5-d5 17.Re3-e1 Qd5-d7 18.Re1-b1 Qd7-a4 19.Rb1-e1 Qa4-c4 20.Re1-e8 Kf6-f5 21.Re8-e1 Qc4-b5 22.Re1-e7 Qb5-c6
  -+  (-3.47)   Depth: 35   00:01:15  661mN, tb=4927412
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-d5 10.Rb1-e1 Qd5-d6 11.Re1-e8 Qd6-d7 12.Re8-e1 Qd7-d5 13.Re1-e8 Qd5-d6 14.Re8-e1 Qd6-c5 15.Re1-e2 Qc5-b5 16.Re2-e1 Kf5-f6 17.Re1-e4 Qb5-d5 18.Re4-e2 Qd5-c5 19.Re2-e4 Qc5-b5 20.Re4-e3 Qb5-c6 21.Re3-e1 Qc6-d7 22.Re1-f1+ Kf6-g7
  -+  (-3.47)   Depth: 36   00:01:31  789mN, tb=6332231
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-d5 10.Rb1-e1 Qd5-d6 11.Re1-e8 Qd6-d7 12.Re8-e1 Qd7-d5 13.Re1-e8 Qd5-d6 14.Re8-e1 Qd6-g6 15.Re1-e7 Qg6-c6 16.Re7-e2 Kf5-f6 17.Re2-e1 Qc6-b5 18.Re1-e4 Qb5-c5 19.Re4-e8 Qc5-d5 20.Re8-e2 Qd5-d4 21.Re2-e8 Qd4-c4 22.Re8-a8 Qc4-d5 23.Ra8-e8
  -+  (-3.48)   Depth: 37   00:01:47  929mN, tb=7852507
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-d5 10.Rb1-e1 Qd5-d6 11.Re1-e8 Qd6-d7 12.Re8-e1 Qd7-d5 13.Re1-e7 Qd5-c6 14.Re7-e1 Kf5-f6 15.Re1-e2 Qc6-d5 16.Re2-e8 Qd5-f7 17.Re8-e2 Qf7-c4 18.Re2-e1 Qc4-d4 19.Re1-e2 Kf6-f5 20.Re2-e8 Qd4-d6 21.Re8-e1 Kf5-f6 22.Re1-e8 Qd6-d5 23.Re8-e2
  -+  (-3.48)   Depth: 38   00:02:28  1281mN, tb=12830046
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-b2 7.Rf1xb1 Qb2-e5 8.Rb1-b6+ Kg6-f5 9.Rb6-b1 Qe5-d5 10.Rb1-e1 Qd5-d6 11.Re1-e8 Qd6-d7 12.Re8-e1 Qd7-d5 13.Re1-e2 Qd5-b5 14.Re2-e7 Kf5-f6 15.Re7-e4 Qb5-c5 16.Re4-e8 Qc5-d5 17.Re8-h8 Qd5-f7 18.Rh8-a8 Kf6-e5 19.Ra8-a5+ Ke5-d4 20.Kh2-g1 Kd4-e3 21.Ra5-e5+ Ke3-d2 22.Kg1-h2 Kd2-c3 23.Re5-e3+ Kc3-d4 24.Re3-e1 Qf7-c4 25.Re1-d1+ Kd4-e3
  -+  (-3.50)   Depth: 39   00:04:16  2269mN, tb=23305082
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e7 Kf5-f6 16.Re7-e8 Qc4-d5 17.Re8-e1 Qd5-c6 18.Re1-e2 Kf6-f5 19.Re2-e1 Qc6-c3 20.Re1-e7 Qc3-c4 21.Re7-e3 Qc4-b5 22.Re3-e1 Qb5-c5 23.Re1-e8 Qc5-d6 24.Re8-e1
  -+  (-3.50)   Depth: 40   00:04:37  2449mN, tb=25055646
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e7 Qc4-c3 16.Re7-e8 Qc3-g7 17.Re8-e2 Kf5-f6 18.Re2-e8 Qg7-f7 19.Re8-e1 Qf7-c7 20.Re1-e8 Qc7-c4 21.Re8-e1 Qc4-c6 22.Re1-e2 Kf6-f5 23.Re2-e1 Qc6-d5 24.Re1-e7
  -+  (-3.50)   Depth: 41   00:05:32  3045mN, tb=34111754
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e7 Qc4-d4 16.Re7-f7+ Kf5-g6 17.Rf7-e7 Qd4-d5 18.Re7-e8 Kg6-f6 19.Re8-e1 Qd5-c6 20.Re1-e2 Kf6-f5 21.Re2-e1 Qc6-c5 22.Re1-e8 Qc5-a7 23.Re8-e2 Qa7-d4 24.Re2-e8 Qd4-d6 25.Re8-e1
  -+  (-3.50)   Depth: 42   00:06:37  3620mN, tb=39470809
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e7 Qc4-a6 16.Re7-e8 Qa6-d6 17.Re8-e1 Qd6-c5 18.Re1-e8 Qc5-a7 19.Re8-e1 Kf5-f6 20.Re1-e4 Qa7-c5 21.Re4-e8 Qc5-d5 22.Re8-e1 Qd5-c6 23.Re1-e2 Kf6-f5 24.Re2-e1 Qc6-c8 25.Re1-e2 Qc8-d7
  -+  (-3.50)   Depth: 43   00:07:19  3987mN, tb=42948594
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e7 Kf5-f6 16.Re7-e8 Qc4-d5 17.Re8-e1 Qd5-c6 18.Re1-e2 Kf6-f5 19.Re2-e7 Qc6-f6 20.Re7-e2 Qf6-c3 21.Re2-e7 Qc3-c8 22.Re7-e2 Qc8-g8 23.Re2-e7 Qg8-f8 24.Re7-e2 Qf8-c5 25.Re2-e1 Qc5-b4 26.Re1-e8
  -+  (-3.50)   Depth: 44   00:08:17  4495mN, tb=48407876
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e1 Kf5-f6 16.Re1-e3 Qc4-d4 17.Re3-e1 Qd4-c5 18.Re1-e8 Qc5-d5 19.Re8-e2 Qd5-c6 20.Re2-e1 Qc6-b6 21.Re1-e8 Kf6-f5 22.Re8-e1 Qb6-c7 23.Re1-e8 Qc7-g7 24.Re8-e1 Qg7-c3 25.Re1-e2 Qc3-c6 26.Re2-e1 Kf5-f6
  -+  (-3.50)   Depth: 45   00:09:05  4913mN, tb=52991012
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e1 Qc4-d3 16.Re1-e7 Kf5-f6 17.Re7-e1 Qd3-d6 18.Re1-f1+ Kf6-g6 19.Rf1-f4 Qd6-d2 20.Rf4-f8 Qd2-d5 21.Rf8-f1 Qd5-a5 22.Rf1-f8 Kg6-g7 23.Rf8-f1 Qa5-d5 24.Rf1-f4 Qd5-b5 25.Rf4-f2 Qb5-e5 26.Rf2-f4 Qe5-d5 27.Rf4-f1 Qd5-c5 28.Rf1-f4
  -+  (-3.50)   Depth: 46   00:10:18  5558mN, tb=64628192
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-c4 15.Re3-e1 Qc4-c3 16.Re1-e7 Qc3-f6 17.Re7-e8 Qf6-f7 18.Re8-e2 Qf7-a7 19.Re2-e8 Qa7-d7 20.Re8-e2 Qd7-d8 21.Re2-e1 Kf5-f6 22.Re1-e2 Qd8-b8 23.Re2-e1 Qb8-b7 24.Re1-e8 Kf6-f5 25.Re8-e1 Qb7-d5 26.Re1-e8 Kf5-f6 27.Re8-e1
  -+  (-3.51)   Depth: 47   00:12:20  6598mN, tb=80314183
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-b5 14.Re1-e3 Qb5-b6 15.Re3-e1 Qb6-b8 16.Re1-e2 Qb8-d8 17.Re2-e1 Qd8-c7 18.Re1-e8 Qc7-c4 19.Re8-e1 Qc4-b3 20.Re1-e8 Kf5-f6 21.Re8-e1 Qb3-b5 22.Re1-e4 Qb5-d5 23.Re4-e8 Qd5-f7 24.Re8-e1 Qf7-b7 25.Re1-e8 Kf6-f5 26.Re8-e1 Qb7-b2 27.Re1-e8 Qb2-b3
  -+  (-3.51)   Depth: 48   00:17:27  9337mN, tb=118854948
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e8 Qd6-d5 13.Re8-e1 Qd5-d7 14.Re1-f1+ Kf5-g6 15.Rf1-e1 Qd7-d5 16.Re1-e8 Kg6-f6 17.Re8-e3 Qd5-b5 18.Re3-e1 Qb5-c6 19.Re1-a1 Qc6-d5 20.Ra1-e1 Kf6-f7 21.Re1-e3 Qd5-c5 22.Re3-e4 Kf7-f6 23.Re4-e8 Qc5-c4 24.Re8-e1 Kf6-f5 25.Re1-e3 Qc4-c5 26.Re3-e8 Qc5-b6 27.Re8-e7 Qb6-d4 28.Re7-e8 Qd4-d6 29.Re8-e1
  -+  (-3.50)   Depth: 49   00:24:24  13074mN, tb=168640066
1.Bc7-e5 a3-a2 2.f5xg6+ Kf7xg6 3.Be5xc3 Nb1xc3 4.0-0 Nc3-b1 5.h3-h4 a2-a1Q 6.Kg1-h2 Qa1-h8 7.Rf1xb1 Kg6-f5 8.Rb1-e1 Qh8-g7 9.Re1-e8 Qg7-c7 10.Re8-e1 Qc7-c6 11.Re1-e2 Qc6-d6 12.Re2-e1 Qd6-c5 13.Re1-e8 Qc5-d5 14.Re8-e1 Kf5-g6 15.Re1-e8 Kg6-f6 16.Re8-e1 Qd5-b5 17.Re1-e4 Qb5-d7 18.Re4-e1 Qd7-c6 19.Re1-f1+ Kf6-e5 20.Rf1-e1+ Ke5-d4 21.Re1-d1+ Kd4-e3 22.Rd1-d8 Qc6-e4 23.Rd8-d6 Ke3-e2 24.Rd6-d7 Qe4-c6 25.Rd7-d8 Ke2-e3 26.Rd8-d1 Qc6-c5 27.Rd1-d7 Ke3-e4 28.Rd7-d1 Qc5-c4 29.Rd1-e1+ Ke4-d4 30.Re1-d1+ Kd4-e3 31.Rd1-d8
  -+  (-3.51)   Depth: 50   00:33:27  17944mN, tb=252539713

(Russell, Philadelphia 22.09.2015)

descriptionChess Engine Puzzle (High Difficulty) EmptySpassky Fischer, Game 1

more_horiz
[fen]5k2/pp4pp/4pp2/1P6/8/P2KP1P1/5P1b/2B5 b - - 0 30[/fen]

Code:

New game
5k2/pp4pp/4pp2/1P6/8/P2KP1P1/5P1b/2B5 b - - 0 1

Analysis by Stockfish 190915 64 BMI2:

30...h5 31.Ke2 h4 32.Kf3 hxg3 33.fxg3 Ke7
  +/=  (0.57)   Depth: 7/7   00:00:00  0kN
30...h5 31.Ke2 h4 32.Kf3 hxg3 33.fxg3 Ke7 34.Kg2
  +/=  (0.57)   Depth: 8/8   00:00:00  1kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3
  +/=  (0.57)   Depth: 9/10   00:00:00  1kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2
  +/=  (0.57)   Depth: 10/12   00:00:00  2kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2
  +/=  (0.57)   Depth: 11/12   00:00:00  2kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3
  +/=  (0.57)   Depth: 12/14   00:00:00  3kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8
  +/=  (0.57)   Depth: 13/16   00:00:00  3kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6
  +/=  (0.57)   Depth: 14/17   00:00:00  4kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7
  +/=  (0.57)   Depth: 15/18   00:00:00  5kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4
  +/=  (0.57)   Depth: 16/22   00:00:00  5kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5
  +/=  (0.57)   Depth: 17/25   00:00:00  7kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5
  +/=  (0.57)   Depth: 18/25   00:00:00  8kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5
  +/=  (0.57)   Depth: 19/25   00:00:00  10kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6
  +/=  (0.57)   Depth: 20/27   00:00:00  12kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4
  +/=  (0.57)   Depth: 21/28   00:00:00  14kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5
  +/=  (0.57)   Depth: 22/29   00:00:00  17kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5
  +/=  (0.57)   Depth: 23/29   00:00:00  21kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5
  +/=  (0.57)   Depth: 24/30   00:00:00  24kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5 a4
  +/=  (0.57)   Depth: 25/31   00:00:00  30kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kg2 e5 43.Bxe5 Kxb6 44.f4 a5 45.Kf3 Kc5 46.e4
  +/=  (0.57)   Depth: 26/34   00:00:00  35kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kg2 e5 43.Bxe5 Kxb6 44.f4 a5 45.Kf3 Kc5 46.e4
  +/=  (0.57)   Depth: 27/34   00:00:00  41kN
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kg2 e5 43.Bxe5 Kxb6 44.Bf6 a5 45.Kf3 Kc5 46.Bd8
  +/=  (0.57)   Depth: 28/34   00:00:00  273kN, tb=12
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kg2 e5 43.Bxe5 Kxb6 44.Kf3 a5 45.Ke2 Kc5 46.Kd3 b5 47.Bd4+ Kd5 48.f3
  +/=  (0.56)   Depth: 29/37   00:00:00  1638kN, tb=36
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5 a4 46.Kh6 a3 47.Kxh7 Kc5 48.Kxg6
  +/=  (0.57)   Depth: 30/37   00:00:00  1685kN, tb=36
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5 a4 46.Kh6 a3 47.Kxh7 Kc5 48.Kxg6 b5
  +/=  (0.57)   Depth: 31/37   00:00:00  1691kN, tb=36
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5 a4 46.Kh6 a3 47.Kxh7 Kc5 48.Kxg6 b5 49.Kxf5
  +/=  (0.57)   Depth: 32/38   00:00:00  1705kN, tb=36
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5 a4 46.Kh6 a3 47.Kxh7 Kc5 48.Kxg6 b5 49.Bf6 Kc4 50.Kxf5 b4
  +/=  (0.56)   Depth: 33/41   00:00:00  5076kN, tb=113
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 Kb5 43.Kh4 h6 44.Bg7 a5 45.Bxh6 a4 46.Kg5 Kxb6 47.Kxg6 a3 48.Kf7 a2 49.Bg7
  +/=  (0.57)   Depth: 34/43   00:00:00  10139kN, tb=5681
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bxe5 Kxb6 44.Kh4 a5 45.Kg5 a4 46.Kh6 a3 47.Kxh7 Kc5 48.Kxg6 b5 49.Kf6
  +/=  (0.56)   Depth: 35/43   00:00:01  20577kN, tb=7248
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kg2 e5 43.Bxe5 Kxb6 44.Kf3 a5 45.Ke2 Kc5 46.Kd3 b5 47.Bd4+ Kd5 48.f3 h5 49.Kc3 g5 50.Bb6 a4 51.Kb4
  +/=  (0.56)   Depth: 36/45   00:00:01  32766kN, tb=7857
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Kg2 g5 42.Bd4 Kxa5 43.Kf3 Kb5 44.g4 a5 45.e4 fxg4+ 46.Kxg4 a4 47.Kxg5 a3 48.Be5 a2 49.f4 Kc4 50.f5 exf5 51.exf5 Kd5 52.Bb2 Kc5
  +/=  (0.66)   Depth: 37/45   00:00:02  50412kN, tb=17178
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Kg2 Kxa5 42.Bd4 e5 43.Bxe5 Kxb6 44.Kf3 Kc5 45.e4 a5 46.exf5 gxf5 47.Kf4 b5 48.Kxf5 Kd5 49.Bc3 a4 50.f4 Kc4
  +/=  (0.62)   Depth: 38/48   00:00:02  56712kN, tb=21540
30...Ke7
  +/=  (0.56 ++)   Depth: 39/48   00:00:04  90859kN, tb=34253
30...Ke7
  +/=  (0.50 ++)   Depth: 39/50   00:00:18  499MN, tb=112408
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 f5 40.Kxh2 Kb4 41.Bd4 Kxa5 42.Kh3 e5 43.Bc5 Kb5 44.Bf8 Kxb6 45.Kh4 a5 46.Kg5 a4 47.Kh6 Ka5 48.Kxh7 b5 49.Kxg6 b4 50.Kxf5 a3
  +/=  (0.49)   Depth: 39/50   00:00:30  835MN, tb=187738
30...Ke7 31.a4 a6 32.Ba3+ Kf7 33.Ke4 axb5 34.axb5 h5 35.Kf3 h4 36.Kg2 hxg3 37.fxg3 Bxg3 38.Kxg3 e5 39.Kg4 Ke6 40.Bf8 g6 41.Kf3 f5 42.e4 g5 43.Bh6 g4+ 44.Ke3 fxe4 45.Kxe4 g3 46.Be3 g2 47.Bf2 Kf6 48.Bc5 Ke6 49.Bb6 Kd6 50.Ba7 Ke6 51.Be3 Kd6 52.Bf2 Ke6 53.Bc5 Kf6 54.Bb6 Ke6
  +/=  (0.48)   Depth: 40/50   00:00:48  1396MN, tb=444503
30...Ke7
  +/=  (0.42 ++)   Depth: 41/51   00:01:14  2180MN, tb=827744
30...Ke7 31.a4 a6 32.Ba3+ Kf7 33.Ke4 axb5 34.axb5 h5 35.Kf3 h4 36.Kg2 hxg3 37.fxg3 Bxg3 38.Kxg3 e5 39.b6 Ke6 40.Bf8 g6 41.Bh6 Kd5 42.Kf2 Ke4 43.Bg7 f5 44.Bh6 f4 45.Ke2 Kf5 46.Kf3 fxe3 47.Bxe3 g5 48.Bf2 Ke6 49.Kg4 Kd5 50.Bg1 e4 51.Be3 Kc4 52.Kf5 Kd5
  +/=  (0.42)   Depth: 41/55   00:01:18  2293MN, tb=908977
30...Ke7 31.a4
  +/=  (0.48 --)   Depth: 42/55   00:01:20  2353MN, tb=1094541
30...Ke7 31.a4 a6 32.Ba3+ Kf7 33.Ke4 axb5 34.axb5 h5 35.Kf3 h4 36.Kg2 hxg3 37.fxg3 Bxg3 38.Kxg3 e5 39.Kg4 Ke6 40.Bf8 g6 41.e4 f5+ 42.Kf3 g5 43.Ke3 g4 44.exf5+ Kxf5 45.Bc5 g3 46.Ke2 Ke6 47.Kd3 Kd5 48.Be3 Kd6 49.Ke4 Ke6 50.Bc5 g2 51.Be3 Kd6 52.Bf2 Ke6 53.Bc5 Kf6 54.Kd5
  +/=  (0.48)   Depth: 42/55   00:01:24  2444MN, tb=1221467
30...Ke7 31.a4 a6 32.Ba3+ Kf7 33.Ke4 axb5 34.axb5 h5 35.Kf3 h4 36.Kg2 hxg3 37.fxg3 Bxg3 38.Kxg3 e5 39.Kg4 Ke6 40.Bf8 g6 41.e4 f5+ 42.Kf3 g5 43.Ke3 g4 44.exf5+ Kxf5 45.Bc5 g3 46.Ke2 Ke6 47.Kd3 Kd5 48.Be3 Kd6 49.Ke4 Ke6 50.Bc5 g2 51.Be3 Kd6 52.Bf2 Ke6 53.Bc5 Kf6 54.Kd5 Kf5 55.Be3 Kf6 56.Bg1
  +/=  (0.48)   Depth: 43/55   00:01:38  2776MN, tb=1878144
30...Ke7 31.a4
  +/=  (0.54 --)   Depth: 44/57   00:01:59  3230MN, tb=2477663
30...Ke7 31.a4
  +/=  (0.60 --)   Depth: 44/57   00:02:27  3854MN, tb=3519880
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 f4 43.gxf4 Kxf4 44.Bc3 Kf3 45.Bb4 Kf4 46.Bf8 h5 47.Bd6 Kf5 48.Kg3 Ke4 49.Be7 Kf5 50.Bd8 Kg6 51.Bf6 Kf5 52.Be7 g4 53.Bf6 Ke4 54.Bg7
  +/=  (0.55)   Depth: 44/57   00:02:51  4384MN, tb=4371603
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 f4 43.gxf4 Kxf4 44.Bc3 Kf3 45.Bb4 Kf4 46.Bf8 h5 47.Bd6 Kf5 48.Kg3 Ke4 49.Be7 Kf5 50.Bd8 Kg6 51.Bf6 Kf5 52.Be7 g4 53.Bf6 Ke4 54.Bg7 Kf5 55.Bh8 Kg5 56.Bf6+ Kf5
  +/=  (0.54)   Depth: 45/57   00:03:41  5503MN, tb=6189088
30...Ke7 31.a4
  +/=  (0.60 --)   Depth: 46/57   00:04:35  6674MN, tb=8451380
30...Ke7 31.a4
  +/=  (0.67 --)   Depth: 46/57   00:06:21  8997MN, tb=13147591
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 Kf3 43.Ba3 f4 44.gxf4 Kxf4 45.Bf8 h5 46.Bh6 Kf5 47.Kg3 Kg6 48.Bf8 Kf5 49.Be7 Kg6 50.Bc5 Kf5 51.Be3 Kg6 52.Bc1 Kf5 53.Bd2 g4 54.Kh4 Kxe5
  +/=  (0.70)   Depth: 46/57   00:10:35  14587MN, tb=22706980
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 Kf3 43.Ba3 f4 44.gxf4 Kxf4 45.Bf8 h5 46.Bh6 Kf5 47.Kg3 Kg6 48.Bf8 Kf5 49.Be7 Kg6 50.Bc5 Kf5 51.Be3 Kg6 52.Bc1 Kf5 53.Bb2 Kg6 54.Kh3 Kf5 55.Bc3 Kg6 56.Bb4 Kf5 57.Bd2
  +/=  (0.70)   Depth: 47/57   00:12:45  17399MN, tb=28085187
30...Ke7 31.a4
  +/-  (0.77 --)   Depth: 48/58   00:17:54  24177MN, tb=40182780
30...Ke7 31.a4
  +/-  (0.83 --)   Depth: 48/58   00:24:11  32467MN, tb=53668022
30...Ke7
  +/-  (0.77 ++)   Depth: 48/58   00:27:51  37366MN, tb=61424428
30...Ke7 31.a4
  +/-  (0.84 --)   Depth: 48/58   00:31:40  42340MN, tb=69513111
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke4 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Kd4 37.Be3+ Kd3 38.e5 fxe5 39.Kg2 Bxg3 40.Kxg3 Kc4 41.Bd2 Kd3 42.Bc1 Kc4 43.Kg4 Kb3 44.Kh5 Kb4 45.Bd2+ Kc4 46.Kg5 Kb3 47.Kh4 Kc4 48.Kh5 Kb3 49.Kg4 Kc2 50.Bg5 Kd3 51.Kf3 h5 52.Be3 e4+ 53.Kf4 g6 54.Kg5 Ke2 55.Bc5 Kf3
  +/-  (0.92)   Depth: 48/59   00:39:09  52429MN, tb=88090518

(Nordlandia, Sortland, 23.09.2015)


Code:

New game
5k2/pp4pp/4pp2/1P6/8/P2KP1P1/5P1b/2B5 b - - 0 1

Analysis by Stockfish 190915 64 BMI2:

30...Bg1 31.f3 Kf7 32.a4 a6 33.bxa6 bxa6
  -/+  (-0.85)   Depth: 7/7   00:00:00  1kN
30...a6 31.a4 axb5 32.axb5 Bg1 33.Ba3+ Kf7 34.Ke2 g6
  =/+  (-0.65)   Depth: 8/9   00:00:00  10kN
30...Kf7 31.a4 b6 32.Ke2 Kg6 33.e4 Bg1 34.Be3 Kf7
  =/+  (-0.55)   Depth: 9/10   00:00:00  20kN
30...Kf7 31.a4 a6 32.e4 axb5 33.axb5 Bg1 34.Be3 e5 35.g4 Ke6
  =/+  (-0.53)   Depth: 10/11   00:00:00  38kN
30...Kf7 31.a4 a6 32.e4 axb5 33.axb5 Bg1 34.Be3 e5 35.g4 Ke6
  =/+  (-0.53)   Depth: 11/11   00:00:00  40kN
30...Kf7 31.a4 a6 32.Ke2 g6 33.Bd2 axb5 34.axb5 e5 35.Bb4 Bg1 36.Kf3
  =/+  (-0.49)   Depth: 12/12   00:00:00  64kN
30...Kf7 31.a4 h5 32.Ke2 h4 33.gxh4 Be5 34.Bd2 a6 35.h5 axb5 36.axb5 Bd6 37.Kf3
  =  (-0.05)   Depth: 13/18   00:00:00  540kN
30...h5 31.Ke2 h4 32.gxh4 a6 33.a4 Bd6 34.h5 Ke7 35.Bd2 axb5 36.axb5 Kd7 37.Kf3
  =  (-0.03)   Depth: 14/18   00:00:00  695kN
30...h5 31.Ke4 h4 32.gxh4 g6 33.a4 Kf7 34.Kf3 Be5 35.e4 Bd4 36.Be3 e5 37.a5 a6 38.bxa6
  =  (-0.04)   Depth: 15/18   00:00:00  749kN
30...h5 31.Ke4 h4 32.gxh4 g6 33.a4 Kf7 34.Kf3 Be5 35.e4 Bd4 36.Be3 e5 37.a5 a6 38.bxa6 bxa6
  =  (-0.04)   Depth: 16/18   00:00:00  833kN
30...h5 31.Ke2 h4 32.gxh4 g6 33.e4 Bd6 34.a4 a6 35.Be3 Kf7 36.Kd3 Be7 37.Kc4 f5 38.exf5 exf5 39.Bg5 axb5+ 40.axb5
  =  (-0.03)   Depth: 17/20   00:00:00  980kN
30...h5 31.Ke2 h4 32.gxh4 g6 33.Kd3 Kf7 34.a4 Bd6 35.Bd2 Be7 36.f3 e5 37.Kc4 b6 38.Kd5 Bc5 39.Kc6 Ke6 40.e4
  =  (-0.03)   Depth: 18/23   00:00:00  1245kN
30...h5 31.Ke2 h4 32.gxh4 g6 33.e4 Bd6 34.a4 a6 35.Be3 Kf7 36.Kd3 axb5 37.axb5 e5 38.Kc4 Ke6 39.f3 Be7 40.Bf2 Kf7 41.Be3 Ke6
  =  (0.00)   Depth: 19/24   00:00:01  1586kN, tb=3
30...Ke7 31.Ke2 Kd6 32.b6 axb6 33.Kf3 Bg1 34.Kg2 Bxf2 35.Kxf2 Kd5 36.Kf3 Kc4 37.Bd2 b5 38.g4 Kd3 39.Bb4 e5 40.e4
  +/=  (0.34)   Depth: 20/26   00:00:01  4401kN, tb=43
30...Ke7 31.Ke2 Kd6 32.b6 a6 33.Kf3 Kc6 34.Kg2 Bxg3 35.Kxg3 Kxb6 36.Bd2 Kc6 37.Bb4 Kd5 38.Bf8 g6 39.Bb4 f5 40.Kf3 b5
  =  (0.28)   Depth: 21/26   00:00:01  5212kN, tb=47
30...Ke7 31.Bd2 Kd6 32.Bb4+ Ke5 33.e4 f5 34.Bc3+ Kd6 35.Bxg7 f4 36.Bf8+ Kc7 37.g4 Kb6 38.Kc4 a6 39.Bc5+ Kc7 40.bxa6 bxa6 41.f3 Kc6 42.a4 Bg3 43.Bb4 e5 44.Bc3
  =  (0.28)   Depth: 22/31   00:00:01  7944kN, tb=209
30...Ke7 31.Bd2 Kd6 32.Bb4+ Ke5 33.e4 f5 34.Bc3+ Kd6 35.Ke3 fxe4 36.Kxe4 Kc5 37.Bxg7 Kxb5 38.Kf3 Ka4 39.Bf8 b5 40.Kg2 Bxg3 41.Kxg3 a5 42.Kf3 b4 43.axb4 axb4 44.Bg7 b3
  +/=  (0.46)   Depth: 23/35   00:00:02  16941kN, tb=829
30...Ke7 31.Bd2 Kd6 32.Bb4+ Ke5 33.e4 f5 34.Bc3+ Kd6 35.Ke3 fxe4 36.Kxe4 Kc5 37.Bxg7 Kxb5 38.Kf3 Ka4 39.Bf8 b5 40.Kg2 Bxg3 41.Kxg3 a5 42.Kf3 b4 43.axb4 axb4 44.Bg7 b3 45.Ke3 Kb4
  +/=  (0.49)   Depth: 24/35   00:00:02  19233kN, tb=1469
30...Ke7 31.a4 Kd6 32.Ba3+ Ke5 33.e4 f5 34.Bb2+ Kd6 35.Bxg7 b6 36.exf5 exf5 37.Kd4 Bg1 38.Bf8+ Ke6 39.Ke3 Kd5 40.Kf3 Kc4 41.Kg2 Bxf2 42.Kxf2 Kb3 43.Bd6 Kxa4 44.Bb8 Kxb5 45.Bxa7 Kc6 46.Kf3 b5
  +/-  (0.82)   Depth: 25/36   00:00:03  52989kN, tb=6422
30...Ke7
  +/-  (0.75 ++)   Depth: 26/40   00:00:04  63964kN, tb=17240
30...Ke7
  +/=  (0.69 ++)   Depth: 26/40   00:00:04  64978kN, tb=17257
30...Ke7 31.a4
  +/-  (0.75 --)   Depth: 26/40   00:00:04  69750kN, tb=17941
30...Ke7
  +/=  (0.68 ++)   Depth: 26/40   00:00:04  71774kN, tb=18019
30...Ke7 31.a4 Kd7 32.Bd2 b6 33.Bb4 h5 34.Ke4 h4 35.Kf3 hxg3 36.fxg3 Bg1 37.Bd2 Kd6 38.Kg2 Bxe3 39.Bxe3 Kd5 40.Bf4 Kc4 41.Bb8 Kb4 42.Bxa7 Kxa4 43.Bxb6 Kxb5 44.Be3 e5
  +/=  (0.62)   Depth: 26/40   00:00:04  74367kN, tb=18126
30...Ke7 31.a4
  +/=  (0.68 --)   Depth: 27/40   00:00:05  81342kN, tb=19441
30...Ke7 31.a4
  +/-  (0.75 --)   Depth: 27/40   00:00:05  87880kN, tb=20877
30...Ke7 31.a4 Kd7 32.Bd2 b6 33.Ke4 Bg1 34.Be1 Kc7 35.Kf3 Kd6 36.Kg2 Bxf2 37.Kxf2 Kd5 38.Ke2 Kc4 39.Kd2 Kb3 40.Kd3 Kxa4 41.Kc4 f5 42.Bb4 g5 43.Bf8 g4 44.Bd6 Ka5 45.Be5 h5
  +/-  (0.78)   Depth: 27/40   00:00:05  96130kN, tb=21829
30...Ke7
  +/-  (0.72 ++)   Depth: 28/40   00:00:05  98568kN, tb=22058
30...Ke7
  +/=  (0.66 ++)   Depth: 28/40   00:00:05  100MN, tb=22186
30...Ke7 31.a4 Kd7 32.Bd2 b6 33.Ke4 Bg1 34.Be1 Kc7 35.Kf3 Kd6 36.Kg2 Bxf2 37.Kxf2 Kd5 38.Bb4 Kc4 39.Bf8 Kb3 40.Bxg7 f5 41.Kf3 Kxa4 42.Kf4 Kxb5 43.Ke5 a5 44.Kxe6 Kc4
  +/=  (0.65)   Depth: 28/40   00:00:06  106MN, tb=23543
30...Ke7 31.a4
  +/-  (0.71 --)   Depth: 29/43   00:00:07  130MN, tb=30831
30...Ke7
  +/=  (0.65 ++)   Depth: 29/43   00:00:07  131MN, tb=31135
30...Ke7 31.a4
  +/-  (0.71 --)   Depth: 29/43   00:00:07  131MN, tb=31136
30...Ke7 31.a4 Kd7 32.Ke4 Bg1 33.Kf3 Kd6 34.Ba3+ Kd5 35.Kg2 Bxf2 36.Kxf2 Kc4 37.Bf8 g6 38.Ke2 f5 39.Bd6 Kb3 40.Kd3 Kxa4 41.Kc4 Ka5 42.Kc5 Ka4 43.Be5 Kb3 44.Bg7 Ka4 45.Bd4 Kb3 46.Kd6 b6 47.Be5 Kb4
  +/=  (0.68)   Depth: 29/43   00:00:07  134MN, tb=31388
30...Ke7 31.a4
  +/-  (0.74 --)   Depth: 30/43   00:00:07  153MN, tb=46430
30...Ke7
  +/=  (0.68 ++)   Depth: 30/43   00:00:08  175MN, tb=54962
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 hxg3 34.fxg3 Kd6 35.Kg2 Bxg3 36.Kxg3 Kc5 37.Ba3+ Kc4 38.Bf8 g6 39.Be7 Kb3 40.a5 Ka4 41.a6 b6 42.Bxf6 Kxb5 43.Kf4 Kxa6 44.Ke5 b5 45.Kxe6 b4 46.e4 Kb5 47.Kd5 a5
  +/=  (0.65)   Depth: 30/43   00:00:09  180MN, tb=56823
30...Ke7 31.a4
  +/-  (0.71 --)   Depth: 31/43   00:00:09  203MN, tb=81038
30...Ke7
  +/=  (0.65 ++)   Depth: 31/43   00:00:10  211MN, tb=89063
30...Ke7
  +/=  (0.56 ++)   Depth: 31/43   00:00:10  216MN, tb=91987
30...Ke7
  +/=  (0.42 ++)   Depth: 31/43   00:00:10  226MN, tb=95403
30...Ke7 31.a4
  +/=  (0.53 --)   Depth: 31/43   00:00:11  236MN, tb=111587
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 hxg3 34.fxg3 Kd6 35.Kg2 Kc5 36.Ba3+ Kc4 37.b6 a5 38.Kxh2 Kb3 39.Bf8 g6 40.Kh3 Kxa4 41.Kh4 Kb5 42.Bg7 Kxb6 43.Bxf6 a4 44.Kg5 a3 45.Kxg6 Kc6 46.g4 a2 47.g5 Kd5 48.Bb2
  +/=  (0.59)   Depth: 31/46   00:00:11  252MN, tb=131947
30...Ke7 31.a4
  +/=  (0.65 --)   Depth: 32/46   00:00:13  290MN, tb=164895
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 hxg3 34.fxg3 Kd6 35.Kg2 Kc5 36.Ba3+ Kc4 37.Kxh2 b6 38.Bd6 Kb3 39.Kg2 Kxa4 40.Bb8 Kxb5 41.Bxa7 Kc6 42.Bb8 b5 43.Kf3 Kc5 44.Ke2 Kc4 45.Kd2 b4 46.Kc2 g5 47.Bd6 f5 48.Be7 g4 49.Bd6
  +/=  (0.60)   Depth: 32/46   00:00:13  308MN, tb=178147
30...Ke7 31.a4
  +/=  (0.66 --)   Depth: 33/46   00:00:15  358MN, tb=257277
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 hxg3 34.fxg3 Kd6 35.Kg2 Kc5 36.Ba3+ Kc4 37.Kxh2 b6 38.Bd6 Kb3 39.Kg2 Kxa4 40.Bb8 Kxb5 41.Bxa7 Kc6 42.Bb8 b5 43.Kf3 Kc5 44.Ke2 Kc4 45.Kd2 b4 46.Kc2 g5 47.Bd6 f5 48.Be5 Kd5 49.Bf6
  +/=  (0.65)   Depth: 33/46   00:00:16  373MN, tb=268827
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 hxg3 34.fxg3 Kd6 35.Kg2 Kc5 36.Ba3+ Kc4 37.Kxh2 b6 38.Bd6 Kb3 39.Kg2 Kxa4 40.Bb8 Kxb5 41.Bxa7 Kc6 42.Bb8 b5 43.Kf3 Kc5 44.Ke2 Kc4 45.Kd2 b4 46.Kc2 g5 47.Bd6 f5 48.Be7 g4 49.Bd6 Kd5 50.Bxb4 Ke4 51.Bc3 Kxe3
  +/=  (0.64)   Depth: 34/46   00:00:20  498MN, tb=408273
30...Ke7 31.a4
  +/=  (0.70 --)   Depth: 35/50   00:00:26  661MN, tb=665922
30...Ke7
  +/=  (0.64 ++)   Depth: 35/50   00:00:28  698MN, tb=754591
30...Ke7 31.a4
  +/=  (0.70 --)   Depth: 35/50   00:00:29  720MN, tb=779505
30...Ke7
  +/=  (0.62 ++)   Depth: 35/50   00:00:29  726MN, tb=799025
30...Ke7 31.a4
  +/-  (0.73 --)   Depth: 35/50   00:00:32  804MN, tb=861582
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 h3 34.Kg4 Bg1 35.Kxh3 Bxf2 36.Bd2 Kd6 37.Kg2 Bxg3 38.Bb4+ Kd5 39.Kxg3 Ke4 40.Kf2 a6 41.b6 f5 42.Be7 Kd5 43.Kf3 Kc6 44.Bd8 e5 45.a5 Kb5 46.Bc7 Kxa5 47.Bxe5 g5 48.Bf6 g4+ 49.Kf4 Kb5 50.Be5 a5 51.Kxf5 a4 52.Bd4 g3 53.e4
  +/-  (0.79)   Depth: 35/52   00:00:43  1121MN, tb=1227908
30...Ke7
  +/-  (0.72 ++)   Depth: 36/52   00:00:45  1164MN, tb=1400302
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 h3 34.Kg4 Bg1 35.Kxh3 Bxf2 36.Bd2 Kd6 37.Kg2 Bxg3 38.Bb4+ Kd5 39.Kxg3 Ke4 40.Kf2 f5 41.Be7 e5 42.Ke2 g6 43.a5 f4 44.a6 bxa6 45.bxa6 Kd5 46.e4+ Kxe4 47.Bc5 g5 48.Bxa7 Kd5 49.Bb6 Kc6 50.Bd8 e4 51.Kf2 g4 52.Ba5 e3+ 53.Ke2
  +/-  (0.74)   Depth: 36/52   00:00:47  1243MN, tb=1475073
30...Ke7
  +/=  (0.67 ++)   Depth: 37/53   00:00:52  1369MN, tb=1697129
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 h3 34.Kg4 Bg1 35.Kxh3 Bxf2 36.Bd2 Kd6 37.Kg2 Bxg3 38.Bb4+ Kd5 39.Kxg3 e5 40.Kf3 f5 41.Be7 Kc4 42.Bd6 Kd5 43.Bb8 a6 44.b6 g5 45.a5 g4+ 46.Kg3 Ke4 47.Bd6 Kd5 48.Ba3 Ke4 49.Bb2 Kd5 50.Bc1 Ke4 51.Bd2 Kd5 52.Be1 Ke4
  +/=  (0.69)   Depth: 37/53   00:00:55  1460MN, tb=1800468
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 h3 34.Kg4 Bg1 35.Kxh3 Bxf2 36.Bd2 Kd6 37.Kg2 Bxg3 38.Bb4+ Kd5 39.Kxg3 e5 40.Kf3 f5 41.Be7 Kc4 42.Bd6 Kd5 43.Bb8 a6 44.b6 g5 45.a5 g4+ 46.Kg3 Ke4 47.Bd6 Kd5 48.Ba3 Ke4 49.Bc1 Kd3 50.Bb2 Ke4 51.Bc3 Kd5 52.Be1 Ke4 53.Bd2 Kd5 54.Bc3 Ke4
  +/=  (0.65)   Depth: 38/53   00:01:11  1928MN, tb=2402038
30...Ke7
  +/=  (0.59 ++)   Depth: 39/56   00:01:50  3069MN, tb=4191856
30...Ke7 31.a4 a6 32.Ba3+ Kd7 33.Ke2 axb5 34.axb5 h5 35.Kf3 h4 36.Kg2 Bxg3 37.fxg3 hxg3 38.Bf8 g6 39.Bg7 Ke7 40.Kxg3 e5 41.Kf3 Ke6 42.Bh6 Kd6 43.b6 Kc5 44.Ke4 Kd6 45.Kd3 Kd5 46.Ke2 Kc6 47.Bg7 f5 48.Bxe5 Kxb6 49.Kd3 g5 50.Kd4 Kc6 51.Bg3
  +/=  (0.58)   Depth: 39/56   00:02:03  3480MN, tb=4496648
30...Ke7 31.a4
  +/=  (0.64 --)   Depth: 40/56   00:02:22  4055MN, tb=4986320
30...Ke7
  +/=  (0.58 ++)   Depth: 40/56   00:02:31  4317MN, tb=5192195
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 Ka4 40.Bxf6 Kxa5 41.Bd4 Bxg3 42.fxg3 e5 43.Bxe5 Kxb6 44.Bc3 a5 45.Kf2 Kb5 46.Ke2 a4 47.Kd3 a3 48.Bd4 h5 49.e4 g5 50.Bf6
  +/=  (0.59)   Depth: 40/56   00:02:34  4383MN, tb=5244616
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 Ka4 40.Bxf6 Kxa5 41.Bd4 Bxg3 42.fxg3 e5 43.Bxe5 Kxb6 44.Kf3 Kc5 45.Bd4+ Kc4 46.Bb6 Kb5 47.Bd8 a5 48.e4 a4 49.e5 Kc6 50.e6 Kd6 51.e7 Kd7
  +/=  (0.56)   Depth: 41/56   00:02:44  4697MN, tb=5480382
30...Ke7 31.a4
  +/=  (0.63 --)   Depth: 42/56   00:03:03  5236MN, tb=6028408
30...Ke7 31.a4
  +/=  (0.69 --)   Depth: 42/56   00:03:48  6505MN, tb=7413820
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 Ka4 40.Bxf6 Kxa5 41.Bd8 Kb5 42.Kxh2 a5 43.Kg2 a4 44.Kf3 a3 45.Ke4 h5 46.Kd3 a2 47.Bf6 g5 48.Kc2 h4 49.gxh4 gxh4 50.Kb2 h3 51.Be5 Kxb6 52.Kxa2 Kc6 53.Kb3 Kd5 54.Bg3 Ke4
  +/-  (0.71)   Depth: 42/56   00:05:26  9194MN, tb=11468270
30...Ke7
  +/=  (0.65 ++)   Depth: 43/56   00:05:32  9375MN, tb=11766277
30...Ke7
  +/=  (0.59 ++)   Depth: 43/56   00:05:40  9636MN, tb=11982179
30...Ke7 31.a4
  +/=  (0.65 --)   Depth: 43/56   00:06:11  10637MN, tb=13023584
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.Kg2 Kc2 37.Ba3 Kb3 38.Bf8 g6 39.Bg7 Ka4 40.Bxf6 Kxa5 41.Bd8 Kb5 42.Kxh2 a5 43.Kg2 a4 44.Kf3 a3 45.Ke2 h5 46.Kd2 a2 47.Bf6 g5 48.Kc2 h4 49.gxh4 gxh4 50.Kb2 h3 51.Be5 Kxb6 52.Kxa2 Kc5 53.Kb3 Kd5 54.Bg3
  +/-  (0.73)   Depth: 43/56   00:07:00  12012MN, tb=14326191
30...Ke7
  +/=  (0.67 ++)   Depth: 44/56   00:07:08  12244MN, tb=14679806
30...Ke7 31.a4
  +/-  (0.73 --)   Depth: 44/56   00:07:40  13119MN, tb=15979245
30...Ke7
  +/=  (0.67 ++)   Depth: 44/56   00:07:42  13177MN, tb=16068456
30...Ke7
  +/=  (0.53 ++)   Depth: 44/56   00:07:55  13593MN, tb=16370042
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 Kf3 43.Ba3 f4 44.gxf4 Kxf4 45.Bf8 h5 46.Bh6 Kf5 47.Bg7 Ke4 48.Kg2 Kf4 49.Bh8 Kg4 50.Bf6 Kf4 51.Kh3 g4+ 52.Kg2 Kf5 53.Kg3 Ke4 54.Bg7 Kf5
  +/=  (0.55)   Depth: 44/59   00:10:21  17961MN, tb=21444002
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 Kf3 43.Ba3 f4 44.gxf4 Kxf4 45.Bf8 h5 46.Bh6 Kf5 47.Bg7 Ke4 48.Kg2 Kf4 49.Bh8 Kg4 50.Bf6 Kf4 51.Kh3 g4+ 52.Kg2 Kf5 53.Kg3 Ke4 54.Bh8 Kf5 55.Bg7 Ke4 56.Bf6
  +/=  (0.61)   Depth: 45/59   00:11:04  19188MN, tb=23188205
30...Ke7 31.a4
  +/=  (0.67 --)   Depth: 46/59   00:11:55  20657MN, tb=25183453
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 Kf3 43.Ba3 f4 44.gxf4 Kxf4 45.Bf8 h5 46.Bh6 Kf5 47.Bg7 Ke4 48.Kg3 g4 49.Kh4 Kf5 50.Bh6 Ke4 51.Bc1 Kxe5 52.Kxh5 g3 53.Kg4 g2 54.Be3 Ke4
  +/=  (0.63)   Depth: 46/59   00:12:18  21303MN, tb=25980195
30...Ke7 31.a4
  +/=  (0.69 --)   Depth: 47/59   00:13:39  23616MN, tb=29455801
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kc4 35.Kf3 Kd3 36.e4 Bg1 37.e5 f5 38.Kg2 Bxf2 39.Kxf2 Ke4 40.Kg2 h6 41.Bb2 g5 42.Kh3 Kf3 43.Ba3 f4 44.gxf4 Kxf4 45.Bf8 h5 46.Bh6 Kf5 47.Bg7 Ke4 48.Kg3 Kf5 49.Bf6 Kg6 50.Kg2 Kh6 51.Kf3 Kg6 52.Be7 Kf5 53.Kg3 g4 54.Bf6 Ke4 55.Kh4 Kf4
  +/=  (0.69)   Depth: 47/59   00:14:18  24728MN, tb=31767665
30...Ke7 31.a4
  +/-  (0.75 --)   Depth: 48/59   00:19:04  32794MN, tb=44611559
30...Ke7 31.a4
  +/-  (0.82 --)   Depth: 48/63   00:24:31  41813MN, tb=59214469
30...Ke7 31.a4
  +/-  (0.91 --)   Depth: 48/63   00:30:07  51326MN, tb=74553076
30...Ke7 31.a4
  +/-  (1.05 --)   Depth: 48/63   00:37:53  64788MN, tb=97313111
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 h5 35.Kf3 Kb5 36.Bd2 Kc4 37.Kg2 Bxg3 38.Kxg3 g5 39.Be1 e5 40.e4 Kb5 41.Bd2 Kc5 42.Kf3 Kc4 43.Ke2 Kd4 44.f3 Kc4 45.Ke3 Kb5 46.Kd3 Ka4 47.Be1 Kb5 48.Ke3 Kc5 49.Ke2 Kb5 50.Kd3 Kc5 51.Bc3 Kb5 52.Ke2 Kc4 53.Bd2 Kb5 54.Kf2 Kc4
  +/-  (1.01)   Depth: 48/63   00:39:22  67421MN, tb=101564251
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kb5 35.Bd2 Kc4 36.Kf3 Kd3 37.Bb4 Kc4 38.Be1 g5 39.Kg2 Bxg3 40.Kxg3 h5 41.f3 e5 42.e4 Kb5 43.Bc3 Kc4 44.Bd2 Kb5 45.Kf2 Kc4 46.Ke3 Kb5 47.Kd3 Kc5 48.Be1 Kb5 49.Ke3 Kc5 50.Ke2 Kb5 51.Kd3 Kc5 52.Bc3 Kb5 53.Ke2 Kc4 54.Bd2 Kb5 55.Be1 Kc5 56.Bd2 Kc4
  +/-  (1.01)   Depth: 49/64   00:44:15  75674MN, tb=124160423
30...Ke7 31.a4 a6 32.b6 Kd6 33.Ke2 Kc5 34.a5 Kb5 35.Bd2 Kc4 36.Kf3 g5 37.Kg2 Bxg3 38.Kxg3 h5 39.Be1 e5 40.f3 Kd3 41.e4 Kc4 42.Bd2 Kb5 43.Kf2 Kc4 44.Ke3 Kb5 45.Be1 Kc4 46.Kf2 Kb5 47.Ke2 Kc5 48.Kd3 Kb5 49.Bc3 Kc5 50.Ke3 Kc4 51.Be1 Kb5 52.Bd2 Kc5 53.Kd3 Kb5 54.Be1 Kc5 55.Ke2 Kb5 56.Kf2 Kc4 57.Bd2 Kc5
  +/-  (1.01)   Depth: 50/64   00:46:18  79114MN, tb=132236455
30...Ke7
  +/-  (0.94 ++)   Depth: 51/64   00:53:51  92146MN, tb=165102615
30...Ke7
  +/-  (0.88 ++)   Depth: 51/67   00:54:43  93765MN, tb=169534340
30...Ke7 31.a4 h5 32.Ke4 h4 33.Kf3 h3 34.Kg4 Bg1 35.Kxh3 Bxf2 36.Bd2 b6 37.Kg2 Bxe3 38.Bxe3 Kd6 39.Kf3 Kd5 40.Kg4 g6 41.Bh6 e5 42.Bg7 f5+ 43.Kg5 Ke6 44.Bh6 Kf7 45.Kh4 Ke6 46.Bd2 f4 47.Kg4 fxg3 48.Kxg3 Kd5 49.Kf3 Kd4 50.Be3+ Kd3 51.Bg5 Kc4 52.Ke4 Kb4 53.Kd5 Kxa4 54.Kc4 e4 55.Bh6 Ka3 56.Bc1+ Ka2 57.Kc3 Kb1 58.Bg5 Ka2 59.Bf4 Ka3 60.Kc4 Kb2 61.Kd5 Kb3 62.Kxe4 Kc4
  +/-  (0.83)   Depth: 51/67   00:58:17  100116MN, tb=186791082
30...Ke7 31.a4
  +/-  (0.89 --)   Depth: 52/70   01:03:10  108614MN, tb=210486339
30...Ke7 31.a4
  +/-  (0.95 --)   Depth: 52/70   01:07:20  115937MN, tb=228359844
30...Ke7 31.a4
  +/-  (1.05 --)   Depth: 52/77   01:13:01  125737MN, tb=253341122
30...Ke7 31.a4 Kd6 32.Ba3+ Ke5 33.e4 f5 34.Bb2+ Kd6 35.Bxg7 f4 36.g4 f3 37.Bf8+ Ke5 38.Ke3 Kf6 39.Bh6 Bd6 40.Kxf3 Kg6 41.Bf4 e5 42.Be3 a6 43.Ke2 axb5 44.axb5 Kf6 45.Kf3 Ke6 46.Bd2 Kf6 47.Ke2 Bc7 48.f3 Ke6 49.Kd3 Bd6 50.Bc3 Bc7 51.Kc4 Bd6 52.Bd2 Be7 53.Be3 Bd6 54.Bg5 Bb8 55.Kc5 Ba7+ 56.Kb4 Bb6 57.Kc4 Bf2 58.Bd2 Kd6 59.Bc3 Bb6 60.Bb2
  +/-  (1.15)   Depth: 52/77   01:39:10  171126MN, tb=381865222
30...Ke7
  +/-  (1.09 ++)   Depth: 53/77   01:42:52  177681MN, tb=410356626
30...Ke7
  +/-  (1.03 ++)   Depth: 53/77   01:43:26  178828MN, tb=413620947
30...Ke7
  +/-  (0.93 ++)   Depth: 53/77   01:44:13  180389MN, tb=417918987
30...Ke7
  +/-  (0.79 ++)   Depth: 53/77   01:45:33  182912MN, tb=424333660
30...Ke7 31.a4
  +/-  (0.90 --)   Depth: 53/77   01:49:38  190262MN, tb=443183415

(Nordlandia,  24.09.2015)

descriptionChess Engine Puzzle (High Difficulty) EmptyImprisoned King

more_horiz
[fen]8/5K2/8/2p5/7N/2P5/2p3Nk/8 w - - 0 1[/fen]

Code:

New game
8/5K2/8/2p5/7N/2P5/2p3Nk/8 w - - 0 1

Analysis by Stockfish 190915 64 BMI2:

1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qf1+ 4.Ngf4 Qf2 5.c4
  -+  (-3.65)   Depth: 7/9   00:00:00  3kN, tb=60
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qg5 4.Ngf4 Qe5 5.Ng3+ Kg1 6.Nge2+ Kf1
  -+  (-4.06)   Depth: 8/12   00:00:00  7kN, tb=158
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qg5 4.Ngf4 Kh2 5.Ke8 Qe5+ 6.Kd7
  -+  (-3.69)   Depth: 9/17   00:00:00  10kN, tb=229
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qg5 4.Ngf4 Kh2 5.Ke8 Qf5 6.Ke7 Qe5+ 7.Kd7
  -+  (-3.63)   Depth: 10/17   00:00:00  14kN, tb=344
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qb1 4.Ngf4 Qf5+ 5.Kg7 Qe5+ 6.Kg6 Qe4+ 7.Kh6 Kh2 8.Kg7 Qf3
  -+  (-3.54)   Depth: 11/17   00:00:00  21kN, tb=468
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qg5 4.Ngf4 Qe5 5.Kg6 Qe4+ 6.Kh6 Kh2 7.Kg7 Qb1 8.Kf7
  -+  (-3.61)   Depth: 12/24   00:00:00  36kN, tb=743
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qg5 4.Ngf4 Qe5 5.Kg6 Kh2 6.Kf7 Qe3 7.Kf6 Qe4 8.Kg5 Qf3 9.Kg6 Qf1 10.Kf5
  -+  (-3.45)   Depth: 13/24   00:00:00  70kN, tb=1381
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qe5+ 6.Kg6 Qe4+ 7.Kh6 Kh2 8.Kg5 Qb1 9.Kh6 Kh1 10.Kg5
  -+  (-3.45)   Depth: 14/25   00:00:00  85kN, tb=1554
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qe5+ 6.Kf7 Kh2 7.Kg6 c4 8.Kf7 Qd6 9.Kg7 Qc6 10.Kf7 Qe4 11.Kf6 Qf3 12.Ke6
  -+  (-3.33)   Depth: 15/28   00:00:00  140kN, tb=2040
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qe5+ 6.Kf7 Kh2 7.Kg6 c4 8.Kf7 Qd6 9.Kg7 Kh1 10.Kf7 Qe5 11.Kg6 Qe4+ 12.Kf7 Kh2 13.Kf6 Qe8 14.Kf5 Qe3
  -+  (-3.32)   Depth: 16/31   00:00:00  187kN, tb=2621
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qc6 6.Kf7 Kh2 7.Ke7 Qh6 8.Kd7 Qf6 9.Nd5 Qa6 10.Ndf4 Qh6 11.Ke7
  -+  (-3.39)   Depth: 17/35   00:00:00  273kN, tb=3851
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qd6 9.Kg7 Qe7+ 10.Kg6 Qe5 11.Kf7 c4 12.Kg6 Kh1 13.Kf7 Qd6 14.Kg7
  -+  (-3.41)   Depth: 18/35   00:00:00  298kN, tb=4240
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qd6 9.Kg7 Qe7+ 10.Kg6 Qe5 11.Kf7 c4 12.Kg6 Kh1
  -+  (-3.32)   Depth: 19/35   00:00:00  329kN, tb=4528
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qd6 9.Kg7 Qe7+ 10.Kg6 Qe5 11.Kf7 c4 12.Kg6 Kh1 13.Kf7 Qd6 14.Kg7 Qe7+ 15.Kg6
  -+  (-3.32)   Depth: 20/35   00:00:00  353kN, tb=4865
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qd6 9.Kg7 Qe7+ 10.Kg6 Qf8 11.Kg5 Qf7 12.Kg4 Qd7+ 13.Kf3 Qf5 14.Ke3 Qe5+ 15.Kd3
  -+  (-3.33)   Depth: 21/35   00:00:00  499kN, tb=8539
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qf7 16.Kg4 Qc4
  -+  (-3.27)   Depth: 22/35   00:00:00  604kN, tb=9274
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qf7 16.Kg4 Qh7 17.Kf3 Qf5 18.Ke3 Qe5+ 19.Kd3
  -+  (-3.27)   Depth: 23/37   00:00:00  729kN, tb=10980
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6
  -+  (-3.25)   Depth: 24/45   00:00:00  949kN, tb=12319
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe5+ 23.Kg6
  -+  (-3.25)   Depth: 25/45   00:00:00  1008kN, tb=13178
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5
  -+  (-3.25)   Depth: 26/45   00:00:00  1040kN, tb=13803
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe5+ 23.Kg6
  -+  (-3.25)   Depth: 27/45   00:00:00  1103kN, tb=14779
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe5+ 23.Kg6 Kh1
  -+  (-3.25)   Depth: 28/46   00:00:00  1217kN, tb=16438
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe5+ 23.Kg6
  -+  (-3.25)   Depth: 29/46   00:00:00  1355kN, tb=19190
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe5+ 23.Kg6 Kh1 24.Kf7
  -+  (-3.25)   Depth: 30/46   00:00:00  1463kN, tb=20885
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe8 23.Kf6 Qe3 24.Kf5
  -+  (-3.25)   Depth: 31/49   00:00:00  1603kN, tb=23521
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7
  -+  (-3.25)   Depth: 32/49   00:00:00  1836kN, tb=28403
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7
  -+  (-3.25)   Depth: 33/49   00:00:00  2043kN, tb=32661
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7
  -+  (-3.25)   Depth: 34/49   00:00:00  2255kN, tb=36991
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7
  -+  (-3.25)   Depth: 35/49   00:00:00  2514kN, tb=42302
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6
  -+  (-3.25)   Depth: 36/50   00:00:00  2953kN, tb=51852
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6
  -+  (-3.25)   Depth: 37/50   00:00:00  3471kN, tb=64224
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6 26.Kg7 Kh1 27.Kf7 Qe5
  -+  (-3.25)   Depth: 38/54   00:00:00  4186kN, tb=80798
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6 26.Kg7 Kh1 27.Kf7 Qe5 28.Kg6
  -+  (-3.25)   Depth: 39/55   00:00:00  4697kN, tb=92170
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6 26.Kg7 Kh1 27.Kf7 Qh6 28.Ke7 Qc6 29.Kf7 Kh2 30.Ke7 Qe4+ 31.Kd6
  -+  (-3.25)   Depth: 40/60   00:00:01  5226kN, tb=103292
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6 26.Kg7 Kh1 27.Kf7 Qh6 28.Ke7 Qc6 29.Kf7 Kh2 30.Ke7 Qf3 31.Kd6
  -+  (-3.25)   Depth: 41/62   00:00:01  6281kN, tb=125499
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qf3 18.Kf6 Qe3 19.Kg6 Qe5 20.Kf7 Qe4 21.Kf6 c4 22.Kg5 Qe7+ 23.Kf5 Qe3 24.Kg6 Qe5 25.Kf7 Qd6 26.Kg7 Kh1 27.Kf7 Qh6 28.Ke7 Qc6 29.Kf7 Qd6 30.Kg7 Kh2 31.Kf7 Qe5 32.Kg6
  -+  (-3.25)   Depth: 42/63   00:00:01  7680kN, tb=155186
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qe5+ 18.Kg6 c4 19.Kf7 Qd6 20.Kg7 Kh1 21.Kf7 Qh6 22.Ke7 Qc6 23.Kf7 Qd6 24.Kg7 Kh2 25.Kf7 Qh6 26.Ke7 Qb6 27.Kf7 Qc6 28.Ke7 Qh6 29.Kf7 Qb6 30.Ke7 Qc6 31.Kf7 Qa6
  -+  (-3.25)   Depth: 43/64   00:00:01  10013kN, tb=177188
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qe5+ 18.Kg6 c4 19.Kf7 Qd6 20.Kg7 Kh1 21.Kf7 Qh6 22.Ke7 Qc6 23.Kf7 Qd6 24.Kg7 Kh2 25.Kf7 Qh6 26.Ke7 Qb6 27.Kf7 Qc6 28.Ke7 Qh6 29.Kf7 Qb6 30.Ke7 Qc6 31.Kf7 Qa8 32.Ke7 Qe4+ 33.Kd6 Qf5 34.Ke7
  -+  (-3.25)   Depth: 44/67   00:00:01  11126kN, tb=198164
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qe5+ 18.Kg6 c4 19.Kf7 Qd6 20.Kg7 Kh1 21.Kf7 Qh6 22.Ke7 Qc6 23.Kf7 Qd6 24.Kg7 Kh2 25.Kf7 Qh6 26.Ke7 Qb6 27.Kf7 Qc6 28.Ke7 Qh6 29.Kf7 Qb6 30.Ke7 Qc6 31.Kf7 Kh1 32.Kg7 Qb6 33.Kf7 Qa6 34.Ke7 Kh2 35.Kf7 Qb7+ 36.Ke6 Qe4+ 37.Kd6
  -+  (-3.25)   Depth: 45/69   00:00:01  12715kN, tb=221470
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qf8 15.Kg5 Qe8 16.Kf6 Qe4 17.Kg5 Qe5+ 18.Kg6 c4 19.Kf7 Qd6 20.Kg7 Kh1 21.Kf7 Qh6 22.Ke7 Qc6 23.Kf7 Qd6 24.Kg7 Kh2 25.Kf7 Qh6 26.Ke7 Qb6 27.Kf7 Qc6 28.Ke7 Qh6 29.Kf7 Qa6 30.Ke7 Qc6 31.Kf7 Qb6 32.Ke7 Kh1 33.Kf7 Qa6 34.Ke7 Kh2 35.Kf7 Qb7+ 36.Ke6 Qe4+ 37.Kd6
  -+  (-3.25)   Depth: 46/70   00:00:01  13682kN, tb=236349
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Qc6 11.Ke7 Qh6 12.Kf7 Qd6 13.Kg7 Qe7+ 14.Kg6 Qe5 15.Kf7 Kh1 16.Kg6 c4 17.Kf7 Qd6 18.Kg7 Kh2 19.Kf7 Qc6 20.Ke7 Qb6 21.Kf7 Qh6 22.Ke7 Qc6 23.Kf7 Qd6 24.Kg7 Kh1 25.Kf7 Qc6 26.Kg7 Qb6 27.Kf7 Kh2 28.Ke7 Qa6 29.Kf7 Kh1 30.Kg7 Qc6 31.Kf7 Qh6 32.Ke7
  -+  (-3.19)   Depth: 47/70   00:00:02  57620kN, tb=276120
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Kh2 18.Kd6 Qf5 19.Ke7 Qe5+ 20.Kf7 Qd6 21.Kg7 Qc6 22.Kf7 Qb6 23.Ke7 Qh6 24.Kf7 Kh1 25.Ke7 Qc6 26.Kf7 Qb6 27.Ke7 Qh6 28.Kf7 Qa6 29.Ke7 Qb6 30.Kf7 Qc6 31.Kg7 Qd6 32.Kf7 Qe5
  -+  (-3.13)   Depth: 48/71   00:00:04  155MN, tb=505593
1.Nf3+
  -+  (-3.07 ++)   Depth: 49/71   00:00:04  178MN, tb=691932
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Kh2 18.Kd6 Qf5 19.Ke7 Qe5+ 20.Kf7 Qd6 21.Kg7 Qc5 22.Kf6 Qe3 23.Kg5 Kh1 24.Kf6 Qe8 25.Kf5 Qe7 26.Kg4 Qe5 27.Kf3 Qc5 28.Ng3+ Kg1 29.Nh3+ Kh2 30.Nf4 Qc6+ 31.Kf2 Qb6+ 32.Kf3 Qf6 33.Nge2 Qe7 34.Nd5 Qe6 35.Ndf4 Qe8 36.Kg4 Qf7
  -+  (-3.07)   Depth: 49/75   00:00:05  182MN, tb=724733
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Kh2 18.Kd6 Qf5 19.Ke7 Qe5+ 20.Kf7 Qd6 21.Kg7 Qc5 22.Kf6 Qe3 23.Kg5 Kh1 24.Kf6 Qe8 25.Kf5 Qe7 26.Kg4 Qe5 27.Kf3 Qc5 28.Ng3+ Kg1 29.Nh3+ Kh2 30.Nf4 Qc6+ 31.Kf2 Qb6+ 32.Kf3 Qf6 33.Nge2 Qe7 34.Nd5 Qe6 35.Ndf4 Qe8 36.Kg4 Qf7 37.Kg5 Qh7
  -+  (-3.07)   Depth: 50/75   00:00:05  186MN, tb=776996
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Kh2 18.Kd6 Qf5 19.Ke7 Qe5+ 20.Kf7 Qd6 21.Kg7 Qc5 22.Kf6 Qe3 23.Kg5 Kh1 24.Kf6 Qe8 25.Kf5 Qe7 26.Kg4 Qe5 27.Kf3 Qc5 28.Ng3+ Kg1 29.Nh3+ Kh2 30.Nf4 Qc6+ 31.Kf2 Qb6+ 32.Kf3 Qf6 33.Nge2 Qe7 34.Nd5 Qe6 35.Ndf4 Qe8 36.Kg4 Qf7 37.Kg5 Qh7 38.Kf6 Qe4 39.Kg5
  -+  (-3.07)   Depth: 51/77   00:00:05  189MN, tb=806443
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Kh2 18.Kd6 Qf5 19.Ke7 Qe5+ 20.Kf7 Qd6 21.Kg7 Qc5 22.Kf6 Qe3 23.Kg5 Kh1 24.Kf6 Qe8 25.Kf5 Qe7 26.Kg4 Qe5 27.Kf3 Qc5 28.Ng3+ Kg1 29.Nh3+ Kh2 30.Nf4 Qc6+ 31.Kf2 Qb6+ 32.Kf3 Qf6 33.Nge2 Qe7 34.Nd5 Qe6 35.Ndf4 Qe8 36.Kg4 Qf7 37.Kg5 Qh7 38.Kf6 Qe4 39.Kg5 Qe7+ 40.Kf5
  -+  (-3.07)   Depth: 52/79   00:00:05  194MN, tb=907120
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Kh2 18.Kd6 Qf5 19.Ke7 Qe5+ 20.Kf7 Qd6 21.Kg7 Qc5 22.Kf6 Qe3 23.Kg5 Kh1 24.Kf6 Qe8 25.Kf5 Qe7 26.Kg4 Qe5 27.Kf3 Qc5 28.Ng3+ Kg1 29.Nh3+ Kh2 30.Nf4 Qc6+ 31.Kf2 Qb6+ 32.Kf3 Qf6 33.Nge2 Qe7 34.Nd5 Qe6 35.Ndf4 Qe8 36.Kg4 Qf7 37.Kg5 Qh7 38.Kf6 Qe4 39.Kg5 Qf3 40.Kf5
  -+  (-3.07)   Depth: 53/80   00:00:05  198MN, tb=950359
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Ng3 Qf8 31.Nge2 Qe8 32.Kg4 Qf7 33.Kg5 Kh1 34.Kg4 Qe7 35.Kf5 Qe3 36.Kg6 Qe4+ 37.Kf6 Kh2
  -+  (-3.07)   Depth: 54/82   00:00:06  205MN, tb=1032254
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qd6 34.Nd4 Qd8 35.Nde2 Qe8 36.Kg4 Qe4 37.Kg5 Qh1 38.Kf6 Qf3 39.Ke5
  -+  (-3.07)   Depth: 55/82   00:00:06  209MN, tb=1064513
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qd6 34.Nd4 Qd8 35.Nde2 Qe8 36.Kg4 Qe7 37.Kf5 Qe3 38.Kg5 Qe4 39.Kf6 Qf3
  -+  (-3.07)   Depth: 56/82   00:00:06  213MN, tb=1133034
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qd6 34.Ke4 Qd2 35.Kf3 Qd1 36.Ke4 Qd8 37.Kf3 Qe8 38.Kg4 Qe7 39.Kf5 Qe3 40.Kg5
  -+  (-3.07)   Depth: 57/87   00:00:06  217MN, tb=1181419
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qd6 34.Ke4 Qd2 35.Kf3 Qd1 36.Ke4 Qd8 37.Kf3 Qe8 38.Kg4 Qe7 39.Kf5 Qd7+ 40.Kf6 Qe8 41.Kg5
  -+  (-3.07)   Depth: 58/87   00:00:06  223MN, tb=1275419
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qd6 34.Ke4 Qd2 35.Kf3 Qd1 36.Ke4 Qd8 37.Kf3 Qe8 38.Kg4 Qe7 39.Kf5 Qe3 40.Kg4 Qf2 41.Kf5
  -+  (-3.07)   Depth: 59/87   00:00:07  229MN, tb=1367331
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kg4 Qe7 37.Kf5 Qe8 38.Kg5 Qd7 39.Kf6 Qb5 40.Ke6 Qc5 41.Kf6 Qe3 42.Kf7
  -+  (-3.07)   Depth: 60/87   00:00:07  238MN, tb=1498369
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kg4 Qe7 37.Kf5 Qe8 38.Kg5 Qd7 39.Kf6 Qb5 40.Ke6 Qc5 41.Kf6 Qe3 42.Kf7
  -+  (-3.07)   Depth: 61/87   00:00:07  246MN, tb=1587832
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kg4 Qe7 37.Kf5 Qe8 38.Kg5 Qd7 39.Kf6 Qb5 40.Ke6 Qc5 41.Kf6 Qe3 42.Kf7 Qe4
  -+  (-3.07)   Depth: 62/87   00:00:08  252MN, tb=1676942
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kg4 Qe7 37.Kf5 Qe8 38.Kg5 Qd7 39.Kf6 Qb5 40.Ke6 Qc5 41.Kf6 Qe3 42.Kf7 Qe4 43.Kf6
  -+  (-3.07)   Depth: 63/87   00:00:08  265MN, tb=1901867
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kg4 Qe7 37.Kf5 Qe8 38.Kg5 Qd7 39.Kf6 Qb5 40.Ke6 Qc5 41.Kf6 Qe3 42.Kf7 Qe4 43.Kf6 Qf3
  -+  (-3.07)   Depth: 64/87   00:00:08  278MN, tb=2078447
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kg4 Qe7 37.Kf5 Qe8 38.Kg5 Qd7 39.Kf6 Qb5 40.Ke6 Qc5 41.Kf6 Qe3 42.Kf7 Qe4 43.Kf6 Qf3 44.Ke5
  -+  (-3.07)   Depth: 65/87   00:00:09  288MN, tb=2183335
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qa5 35.Kf3 Qa8+ 36.Kg4 Qc8+ 37.Kf3 Qb7+ 38.Kg4 Qd7+ 39.Kg5 Qd2 40.Kf6 Qe3 41.Kf5 Kh1 42.Kg6 Qe4+ 43.Kg5 Kh2 44.Kg4 Qc2 45.Kg5 Qb2 46.Kf5 Qd2 47.Ke5
  -+  (-3.07)   Depth: 66/95   00:00:10  325MN, tb=2489934
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qa5 35.Kf3 Qa8+ 36.Kg4 Qc8+ 37.Kf3 Qb7+ 38.Kg4 Qd7+ 39.Kg5 Qd2 40.Kf6 Qe3 41.Kf5 Kh1 42.Kg6 Qe4+ 43.Kg5 Kh2 44.Kg4 Qc2 45.Kg5 Qb1 46.Kf6 Qf1 47.Ke5 Qd1
  -+  (-3.07)   Depth: 67/95   00:00:10  340MN, tb=2621407
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qa5 35.Kf3 Qa8+ 36.Kg4 Qc8+ 37.Kf3 Qb7+ 38.Kg4 Qd7+ 39.Kg5 Qd2 40.Kf6 Qe3 41.Kf5 Kh1 42.Kg6 Qe4+ 43.Kg5 Qe5+ 44.Kg6 Kh2 45.Kf7 Qd6 46.Kg7 Qd8 47.Kg6 Qe7 48.Kf5 Qd6 49.Ke4
  -+  (-3.07)   Depth: 68/101   00:00:11  352MN, tb=2759433
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qa5 35.Kf3 Qa8+ 36.Kg4 Qc8+ 37.Kf3 Qb7+ 38.Kg4 Qd7+ 39.Kg5 Qd2 40.Kf6 Qe3 41.Kf5 Kh1 42.Kg6 Qe4+ 43.Kg5 Qe5+ 44.Kg6 Kh2 45.Kf7 Qd6 46.Kg7 Qd8 47.Kg6 Qe7 48.Kf5 Qe3 49.Kg6 Kh1 50.Kf6
  -+  (-3.07)   Depth: 69/101   00:00:12  377MN, tb=3048683
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qa5 35.Kf3 Qa8+ 36.Kg4 Qc8+ 37.Kf3 Qb7+ 38.Kg4 Qd7+ 39.Kg5 Qd2 40.Kf6 Qe3 41.Kg6 Qe5 42.Kf7 Qd6 43.Kg7 Qd8 44.Kg6 Qf8 45.Kg5 Qf7 46.Kg4 Qa7 47.Kf3 Qh7 48.Kg4 Qc2 49.Kg5 Qe4
  -+  (-3.07)   Depth: 70/101   00:00:12  396MN, tb=3271185
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kf6 Qe4 37.Kg5 Qb1 38.Kf6 Qb5 39.Ke6 Qc5 40.Kf6 Qe3 41.Kg6 Qe5 42.Kf7 Qd6 43.Kg7 Qd8 44.Kg6 Qf8 45.Kg5 Kh1 46.Kg6 Qe7 47.Kf5
  -+  (-3.07)   Depth: 71/105   00:00:13  421MN, tb=3389135
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kf6 Qe4 37.Kg5 Qb1 38.Kf6 Qb5 39.Ke6 Qc5 40.Kf6 Qe3 41.Kg6 Qe5 42.Kf7 Qd6 43.Kg7 Qd8 44.Kg6 Qf8 45.Kg5 Kh1 46.Kg6 Qe7 47.Kf5 Qd6 48.Ke4 Kh2 49.Kf5
  -+  (-3.07)   Depth: 72/105   00:00:14  442MN, tb=3625965
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kf6 Qe4 37.Kg5 Qb1 38.Kf6 Qb5 39.Ke6 Qc5 40.Kf6 Qe3 41.Kg6 Qe5 42.Kf7 Qd6 43.Kg7 Kh1 44.Kf7 Qe5 45.Kg6 Qe4+ 46.Kf6 Qe8 47.Kf5 Kh2 48.Kg5 Qc6 49.Kf5 Qd7+ 50.Ke5 Qd2 51.Ke6
  -+  (-3.07)   Depth: 73/105   00:00:14  462MN, tb=3814202
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kf6 Qe4 37.Kg5 Qb1 38.Kf6 Qb5 39.Ke6 Qc5 40.Kf6 Qe3 41.Kg6 Qe5 42.Kf7 Qd6 43.Kg7 Kh1 44.Kf7 Qe5 45.Kg6 Qe7 46.Kf5 Qd6 47.Ke4 Qc5 48.Kf3 Qc6+ 49.Ke3 Qb6+ 50.Ke4 Qd6 51.Kf3 Kh2 52.Ke4
  -+  (-3.07)   Depth: 74/105   00:00:16  505MN, tb=4395860
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qe3 36.Kf6 Qe4 37.Kg5 Qb1 38.Kf6 Qb5 39.Ke6 Qc5 40.Kf6 Qe3 41.Kg6 Qe5 42.Kf7 Qd6 43.Kg7 Kh1 44.Kf7 Qe5 45.Kg6 Qa5 46.Kf6 Kh2 47.Kg6 Qd8 48.Kf5 Qe8 49.Kg5 Qe4 50.Kg4 Qe3 51.Kf5
  -+  (-3.07)   Depth: 75/106   00:00:17  530MN, tb=4562689
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qd7+ 36.Ke5 Kh1 37.Kf6 Qe8 38.Kf5 Qe3 39.Kf6 Qc5 40.Kg6 Qe7 41.Kf5 Qd6 42.Ke4 Qc5 43.Kf3 Qf8 44.Kg4 Kh2 45.Kg5 Qf7 46.Kg4 Qg7+ 47.Kf3 Qf6 48.Kg4 Qh8 49.Kf5 Qe8 50.Kg5 Qe3
  -+  (-3.07)   Depth: 76/109   00:00:18  573MN, tb=4916092
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe8 35.Kf5 Qd7+ 36.Ke5 Kh1 37.Kf6 Qe8 38.Kf5 Qe3 39.Kf6 Qc5 40.Kg6 Qe7 41.Kf5 Qd6 42.Ke4 Qc5 43.Kf3 Qf8 44.Kg4 Kh2 45.Kg5 Qf7 46.Kg4 Qg7+ 47.Kf3 Qf6 48.Kg4 Qh8 49.Kf5 Qe8 50.Kg5 Qe4 51.Kf6 Qe3
  -+  (-3.07)   Depth: 77/109   00:00:19  600MN, tb=5099301
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe3 35.Kf5 Kh1 36.Kf6 Qc5 37.Kg6 Qe7 38.Kf5 Qd6 39.Ke4 Qc5 40.Kf3 Qa7 41.Ng3+ Kh2 42.Nf1+ Kg1 43.Ne3 Qf7 44.Ke4 Qe7+ 45.Kd4 Qa7+ 46.Ke4 Qc5 47.Kf3 Qc6+ 48.Kg3 Kh1 49.Ne2 Qd6+ 50.Kf3 Qc7 51.Nd4 Qf7+ 52.Kg3 Qe7 53.Kf2 Qb7 54.Ne2 Kh2 55.Nf4 Qb2+ 56.Ne2
  -+  (-3.07)   Depth: 78/113   00:00:21  667MN, tb=5429788
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe3 35.Kf5 Kh1 36.Kf6 Qc5 37.Kg6 Qe7 38.Kf5 Qd6 39.Ke4 Qc5 40.Kf3 Qc6+ 41.Kg4 Qf6 42.Kf3 Kh2 43.Kg4 Qd6 44.Kh5 Qd2 45.Kg4 Qd7+ 46.Kf3 Qe8 47.Kg4 Qf8 48.Kg5 Qc8 49.Kf6 Qe8 50.Kg5 Qf8 51.Kg6 Qe7 52.Kf5
  -+  (-3.07)   Depth: 79/113   00:00:22  711MN, tb=5701726
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe3 35.Kf5 Kh1 36.Kf6 Qc5 37.Kg6 Qe7 38.Kf5 Qd6 39.Ke4 Qd8 40.Ke5 Qd7 41.Ke4 Qd6 42.Kf3 Qc6+ 43.Kg4 Qb5 44.Kf3 Qb1 45.Ng3+ Kh2 46.Nge2 Qb7+ 47.Kg4 Qc8+ 48.Kg5 Qd7 49.Kf6 Qe8 50.Kf5 Kh1 51.Kf6 Qc8 52.Kg5 Qf8 53.Kg6 Kh2 54.Kg5 Qc8
  -+  (-3.07)   Depth: 80/113   00:00:24  772MN, tb=6045799
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 c4 12.Kf7 Qd6 13.Kg7 Kh2 14.Kf7 Qe5 15.Kg6 Kh1 16.Kf7 Qg5 17.Ke6 Qc5 18.Kf6 Qe3 19.Kf5 Qe7 20.Kg4 Qe5 21.Kf3 Qc5 22.Ng3+ Kg1 23.Nh3+ Kh2 24.Nf4 Qc6+ 25.Kf2 Qb6+ 26.Kf3 Qf6 27.Nge2 Qe7 28.Kg4 Qe5 29.Kf3 Qf5 30.Nd4 Qf7 31.Nde2 Qc7 32.Ke4 Qc5 33.Kf3 Qe5 34.Kg4 Qe3 35.Kf5 Kh1 36.Kf6 Qc5 37.Kg6 Qe7 38.Kf5 Qd6 39.Ke4 Qd8 40.Ke5 Qd7 41.Ke4 Qd6 42.Kf3 Qc6+ 43.Kg4 Qb5 44.Kf3 Qb1 45.Ng3+ Kh2 46.Nge2 Qb7+ 47.Kg4 Qc8+ 48.Kg5 Qd8+ 49.Kf5 Qd6 50.Kg5 Qf8 51.Kg6 Qe7 52.Kf5 Qe3 53.Kf6 Qc5 54.Ke6 Qg5
  -+  (-3.07)   Depth: 81/113   00:00:26  832MN, tb=6430700
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 Qc6 12.Kf7 Qh6 13.Ke7 Kh2 14.Kf7 Qd6 15.Kg7 Kh1 16.Kf7 Qe5 17.Ng3+ Kg1 18.Nge2+ Kh2 19.Kg6 Qe8+ 20.Kf5 Qe3 21.Kf6 Qd2 22.Ke6 Qb2 23.Ke5 Qb3 24.Kf6 Qb6+ 25.Ke5 Qb2 26.Kf6 Qc2 27.Ke5 Qd1 28.Ke6 Qd8 29.Ke5 Qd7 30.Ke4 Qd6 31.Ke3 Qe5+ 32.Kd3 Qe8 33.Kc4 Qc6 34.Kd3 Qa4 35.Ke3 Qa6 36.Kf2 Qf6 37.Ke3 Qf7 38.Ke4 Qd7 39.Kf3 Qe8 40.Ng3 Qh8 41.Nge2 Qe5 42.Kg4 Qe4 43.Kg5 Qe7+ 44.Kf5 Qe8 45.Kg5 Qf7 46.Kg4 Qb7 47.Kf5 Qe7 48.Kg4 Qe5 49.Kf3 Qf6 50.Ke4
  -+  (-3.07)   Depth: 82/114   00:00:55  2153MN, tb=10814291
1.Nf3+ Kh1 2.Ng1 c1Q 3.Ne2 Qh6 4.Ngf4 Qd6 5.Kg7 Qa6 6.Kf7 Kh2 7.Kg7 Qc6 8.Kf7 Qh6 9.Ke7 Qa6 10.Kf7 Kh1 11.Ke7 Qc6 12.Kf7 Qh6 13.Ke7 Kh2 14.Kf7 Qd6 15.Kg7 Kh1 16.Kf7 Qe5 17.Ng3+ Kg1 18.Nge2+ Kh2 19.Kg6 Qe8+ 20.Kf5 Qe3 21.Kf6 Qd2 22.Ke6 Qb2 23.Ke5 Qb3 24.Kf6 Qb6+ 25.Ke5 Qb2 26.Kf6 Qc2 27.Ke5 Qd1 28.Ke6 Qe1 29.Kd5 Qf2 30.Kc4 Qe3 31.Kd5 Qe7 32.Kc6 Qe5 33.Kb6 Qd6+ 34.Kb5 Kh1 35.Kc4 Qc6 36.Kd3 Qa6+ 37.Ke4 Kh2 38.Kd5 Qc8 39.Ke5 Qd8 40.Kf5 Qd6 41.Ke4 Qd2 42.Ke5 Qd7 43.Kf6 Qg4 44.Ke7 Qc8 45.Kf6 Qd7 46.Ke5 Qc6 47.Ne6 Kg2 48.N2f4+ Kf3 49.Ng5+ Kf2 50.Ne4+ Ke3 51.Nd6 c4 52.Nd5+ Ke2 53.Nf4+ Ke1 54.Nd5
  -+  (-3.07)   Depth: 83/123   00:00:58  2307MN, tb=11125686

(Nordlandia, Sortland, 24.09.2015)

descriptionChess Engine Puzzle (High Difficulty) EmptyFischer Spassky, Game 1

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[fen]5k2/pp4pp/4pp2/1P6/8/P2KP1P1/5P1b/2B5 b - - 0 1[/fen]

Code:

Analysis by Stockfish 190915 64 BMI2:

30...Ke7 31.a4 Kd6 32.Ba3+ Ke5 33.e4 f5 34.Bb2+ Kd6 35.Bxg7 f4 36.g4 f3 37.Bf8+ Ke5 38.Ke3 Kf6 39.Bh6 Bd6 40.Kxf3 a6 41.Bf4 e5 42.Be3 axb5 43.axb5 Ke6 44.Ke2 Be7 45.f3 Bd8 46.Kd3 Kd6 47.Kc4 Ba5 48.Kb3 Ke6 49.Bg5 Kd6 50.Kc4 Bb6 51.Bd2 Ke6 52.Bb4 Be3 53.Kd3 Bf2 54.Bd2 Bc5 55.Bc3 Bb6 56.Kc4 Kd6 57.Bb4+ Ke6 58.Bc5 Ba5 59.Bf2 Kd6 60.Be3 Be1 61.Bb6 Bd2 62.Bc5+ Ke6 63.Kd3 Ba5 64.Ke2 Bd8 65.Be3 Kf6 66.Bf2 Ke6 67.Bg3 Kd6
+/-  (1.13)    Depth: 62/75   05:54:35  612264MN, tb=2147483647

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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[fen]4N1k1/4q1P1/3pn1pp/Pp2Q3/4B1P1/4Pp1K/8/6b1 w - - 0 1[/fen]
White to play and win.

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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Forced mate in 32/35 moves  wink

[fen]8/3N4/3K4/1p3p2/bp2kp1p/5rbr/1p1PBp1p/N3R2n w - - 0 0[/fen]

Mate in 45

[fen]b2b3R/1np2pp1/2N5/n1PK4/pP3P2/N1k2p2/Rpp3p1/r1B2rq1 w - - 0 1[/fen]

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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Topalov ⚔ Shirov 1998
Check if your engine detects Bh6
[fen]6k1/6p1/2b5/P6p/3P1B2/4KPP1/8/8 w - - 0 1[/fen]

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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@QueensideCastler wrote:
Topalov ⚔ Shirov 1998
Check if your engine detects Bh6
[fen]6k1/6p1/2b5/P6p/3P1B2/4KPP1/8/8 w - - 0 1[/fen]


  In fact this game is with reversed colors - Topalov - Shirov (1998) thumb up
 
  [pgn][Event "Linares"]
[Site "Linares ESP"]
[Date "1998.03.04"]
[EventDate "1998.02.22"]
[Round "10"]
[Result "0-1"]
[White "Veselin Topalov"]
[Black "Alexey Shirov"]
[ECO "D85"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "106"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Bb5+ c6 8.Ba4 O-O 9.Ne2 Nd7 10.O-O e5 11.f3 Qe7 12.Be3 Rd8
13.Qc2 Nb6 14.Bb3 Be6 15.Rad1 Nc4 16.Bc1 b5 17.f4 exd4 18.Nxd4
Bg4 19.Rde1 Qc5 20.Kh1 a5 21.h3 Bd7 22.a4 bxa4 23.Ba2 Be8
24.e5 Nb6 25.f5 Nd5 26.Bd2 Nb4 27.Qxa4 Nxa2 28.Qxa2 Bxe5
29.fxg6 hxg6 30.Bg5 Rd5 31.Re3 Qd6 32.Qe2 Bd7 33.c4 Bxd4
34.cxd5 Bxe3 35.Qxe3 Re8 36.Qc3 Qxd5 37.Bh6 Re5 38.Rf3 Qc5
39.Qa1 Bf5 40.Re3 f6 41.Rxe5 Qxe5 42.Qa2+ Qd5 43.Qxd5+ cxd5
44.Bd2 a4 45.Bc3 Kf7 46.h4 Ke6 47.Kg1 Bh3 48.gxh3 Kf5 49.Kf2
Ke4 50.Bxf6 d4 51.Be7 Kd3 52.Bc5 Kc4 53.Be7 Kb3 0-1[/pgn]
P.S. And I found only one engine detecting 47 ...Bh3!

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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@QueensideCastler wrote:
In fact this game is with reversed colors - Topalov - Shirov (1998) thumb up

This game is a gem! Thanks for sharing

descriptionChess Engine Puzzle (High Difficulty) EmptyRe: Chess Engine Puzzle (High Difficulty)

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