Stockfish

These improvements of Stockfish every week is really doing something very good, I am starting using and liking it!!!

17 Aug

Newest/Latest Stockfish:

http://abrok.eu/stockfish/

Stockfish + Syzygy Endgame Tablebases (sister engine)

Author: Ronald de Man
Date: Thu Jan 9 00:05:23 2014 +0100
Timestamp: 1389222323

Merge remote-tracking branch 'upstream/master'

(i.e.

Author: Uri Blass
Date: Wed Jan 8 23:45:55 2014 +0900
Timestamp: 1389192355

Stop earlier if iteration is taking too long

If we are still at first move, without a fail-low and
current iteration is taking too long to complete then
stop the search.

Passed short TC:
LLR: 2.97 (-2.94,2.94) [-1.50,4.50]
Total: 26030 W: 4959 L: 4785 D: 16286

Long TC:
LLR: 2.95 (-2.94,2.94) [0.00,6.00]
Total: 18019 W: 2936 L: 2752 D: 12331

And performed well at 40/30
ELO: 4.33 +-2.8 (95%) LOS: 99.9%
Total: 20000 W: 3480 L: 3231 D: 13289

bench: 8502826

-------------------------------------------------------------

Author: Ralph Stoesser
Date: Wed Jan 8 23:57:06 2014 +0900
Timestamp: 1389193026

Retire easy move

Remove the easy move code and add the condition to
play instantly if only one legal move is available.

Verified there is no regression at 60+0.05
ELO: 0.17 +-1.9 (95%) LOS: 57.0%
Total: 40000 W: 6397 L: 6377 D: 27226

bench: 8502826

-------------------------------------------------------------

Author: renouve
Date: Wed Jan 8 23:22:17 2014 +0900
Timestamp: 1389190937

Retire grain size code

Seems useless at long TC.

Tested at 60+0.05
ELO: 2.98 +-2.2 (95%) LOS: 99.6%
Total: 30440 W: 4934 L: 4673 D: 20833

And at 120+0.05
ELO: 2.50 +-2.6 (95%) LOS: 97.1%
Total: 19633 W: 2848 L: 2707 D: 14078

bench: 8502826

-------------------------------------------------------------

Windows x64 for modern computers + sse4.2
Windows x64 for modern computers
Windows x64
Windows x32
Linux x64 for modern computers + sse4.2
Linux x64 for modern computers
Linux x64

-------------------------------------------------------------------------------

Syzygy Endgame Tablebases
3,4,5,6 pieces (wdl, dtz)

Generator: https://github.com/syzygy1/tb
Stockfish implementation: https://github.com/syzygy1/Stockfish

Syzygy 3-4-5 Individual Files - Direct Download
(Download Torrent)
938.39 MB

Syzygy 6men DTZ - (Download Torrent)
81.39 GB

Syzygy 6men WDL - (Download Torrent)
67.83 GB

Source: http://oics.olympuschess.com/tracker/index.php

Last edited by VocalTechnique on Thu Jan 09, 2014 9:00 pm; edited 1 time in total (Reason for editing : Tables)

Example of my directory path for the Syzygy endgame tablebases in the Stockfish engine -



1. Save both 345 pieces and 6 piece set to your C drive.

2. Name new folder "Tablebases" in the C drive.

3. Inside the Tablebases folder, name two new folders:
- dtz345
- wdl345

4. Take the single folder, "345" downloaded and open the folder.

5. Alphabetize all wdl seperately from dtz so that all wdl is listed on top.

6. Cut the wdl files from the folder and place into the new "wdl345" folder you just made.

7. *Important step* right click on both the dtz345 and wdl345 and click properties. If you split the files correctly, you should have the following:



8. When you set the tablebases path, be sure that your wdl345 folder is grouped with wdl6 folder and your dtz345 folder is grouped with your dtz6 folder.


Pm me if you need further assistance.

Last edited by VocalTechnique on Wed Jan 15, 2014 12:20 am; edited 1 time in total (Reason for editing : clarity)

blocked_storm_pawn_radi diff
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 6239 W: 1249 L: 1127 D: 3863

fixing_a_bug diff
LLR: 2.96 (-2.94,2.94) [-1.50,4.50]
Total: 19446 W: 3696 L: 3540 D: 12210

http://tests.stockfishchess.org/tests

Vladimir wrote:

Stockfish 12-01-2014 64bit Gauntlet

Time Control: 3 Minutes
1500 games

Stockfish 12-01-2014 64bit - Houdini 4 Pro x64
Stockfish 12-01-2014 64bit - Stockfish DD x64
Stockfish 12-01-2014 64bit - Komodo TCECr 64-bit
Stockfish 12-01-2014 64bit - Critter 1.6a 64-bit
Stockfish 12-01-2014 64bit - Fire 3.0 x64

www.chess2u.com/t7142p60-stockfish-under-microscope#50347

[pgn][Event "3 Minutes/Game"]
[Site "Stockfish 12-01-2014 64bit"]
[Date "2014.01.14"]
[Round "38.1"]
[White "Houdini 4 Pro x64"]
[Black "Stockfish 12-01-2014 64bit"]
[Result "0-1"]
[PlyCount "78"]
[EventDate "2014.??.??"]

1. e4 {book 0s} e6 {book 0s} 2. d4 {book 0s} d5 {book 0s} 3. Nc3 {book 0s} Bb4
{book 0s} 4. e5 {book 0s} Ne7 {book 0s} 5. a3 {book 0s} Bxc3+ {book 0s} 6. bxc3
{book 0s} c5 {book 0s} 7. Qg4 {book 0s} Qc7 {book 0s} 8. Bd3 {book 0s} cxd4 {
book 0s} 9. Ne2 {book 0s} dxc3 {book 0s} 10. Qxg7 {-0.31/16 3} Rg8 {0.00/19 2}
11. Qxh7 {-0.31/15 0} Qxe5 {0.00/20 2} 12. g3 {-0.30/18 6 (O-O)} Nbc6 {-0.71/
19 11} 13. O-O {-0.30/18 2 (Bh6)} Bd7 {-0.79/19 7 (Rh8)} 14. Bh6 {-0.23/18 13
(h4)} O-O-O {-1.44/17 3 (f5)} 15. Qxf7 {-0.13/14 1 (Rab1)} Qh8 {-2.60/17 2
(Be8)} 16. Bc1 {-0.72/16 3 (Bh7)} Nf5 {-2.35/19 3 (e5)} 17. Bxf5 {-2.13/15 3}
Rg7 {-2.55/20 2} 18. Qxe6 {-1.98/15 2} Bxe6 {-2.26/21 4} 19. Bxe6+ {-1.79/14 0}
Kb8 {-2.55/21 1} 20. Nxc3 {-2.13/15 2 (Bf4+)} Qh5 {-2.32/19 5 (Ka8)} 21. Bf4+ {
-1.43/14 2} Ka8 {-2.61/20 3} 22. f3 {-1.89/15 2 (Nb5)} Qh4 {-2.62/18 4} 23. Bg4
{-2.31/17 4} Qe7 {-2.58/19 4 (Qf6)} 24. Kg2 {-2.01/15 1} Qc5 {-2.74/20 1} 25.
Nd1 {-2.05/16 2} Re8 {-2.59/19 3} 26. c3 {-2.00/16 3 (Rf2)} Re2+ {-2.87/20 7}
27. Nf2 {-1.80/15 2} Qxc3 {-3.02/20 9} 28. Rad1 {-2.26/15 4} Qc2 {-3.14/20 4
(Nd4)} 29. Rc1 {-1.43/14 2} Qb3 {-2.80/20 1 (Qa2)} 30. h4 {-1.52/14 3 (Rce1)}
d4 {-2.98/19 4} 31. Bf5 {-2.32/15 6 (Kg1)} Qf7 {-3.49/19 6} 32. Bg4 {-2.35/15
3 (Bh6)} Qd5 {-3.63/18 1 (d3)} 33. Kh3 {-2.47/15 2 (Kg1)} d3 {-4.05/18 1} 34.
Rcd1 {-2.99/15 4 (Rce1)} d2 {-4.46/18 1} 35. h5 {-3.26/16 3} Rg8 {-4.18/19 1}
36. h6 {-3.42/16 1} Ne7 {-5.90/21 6 (Ne5)} 37. Ne4 {-4.35/16 3 (Kg2)} Rxg4 {-9.
30/19 1} 38. fxg4 {-5.66/16 8} Qxe4 {-10.13/20 1} 39. Bxd2 {-5.40/16 1 (Rxd2)}
Ng6 {-12.37/21 1} 0-1[/pgn]

Stockfish 141401 + Syzygy endgame tablebases (sister engine)

Author: Ronald de Man
Date: Tue Jan 14 21:45:20 2014 +0100
Timestamp: 1389732320

Merge remote-tracking branch 'upstream/master'

Windows x64 for modern computers + sse4.2
Windows x64 for modern computers
Windows x64
Windows x32
Linux x64 for modern computers + sse4.2
Linux x64 for modern computers
Linux x64

Merge from:

Author: Stefan Geschwentner
Date: Tue Jan 14 09:24:35 2014 +0100
Timestamp: 1389687875

Introduce 'follow up' moves

When we have a fail-high of a quiet move, store it in
a Followupmoves table indexed by the previous move of
the same color (instead of immediate previous move as
is in countermoves case).

Then use this table for quiet moves ordering in the same
way we are already doing with countermoves.

These followup moves will be tried just after countermoves
and before remaining quiet moves.

Passed both short TC
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 10350 W: 1998 L: 1866 D: 6486

And long TC
LLR: 2.95 (-2.94,2.94) [0.00,6.00]
Total: 14066 W: 2303 L: 2137 D: 9626

bench: 7205153

Source: http://abrok.eu/stockfish/

Windows Fishtest Installer for Stockfish
https://s3.amazonaws.com/stockfish/setup-fishtest.exe

Nice   ..

hello, you can ask for a brief description of how this program works?

Stockfish 12-01-2014 64bit Gauntlet
https://www.chess2u.com/t7142p60-stockfish-under-microscope#50433

EnginesWar rating list (16 January 2014)
Stockfish 12-01-2014 64bit
https://www.chess2u.com/t6886p30-engineswar-rating-list-updated#50434

From Vladimir's list:



Thanks Vladimir

For the :

Stockfish 12-01-2014 64bit Gauntlet

Did you use the version of stockfish 140112 that utilizes syzygy tablebases?

Thanks

VocalTechnique wrote:

Did you use the version of stockfish 140112 that utilizes syzygy tablebases?

No.

Vladimir wrote:

VocalTechnique wrote:

Did you use the version of stockfish 140112 that utilizes syzygy tablebases?

No.

Thank you.

I think StockFish will surpass Houdini in 2 months  

Last edited by peekoo on Mon Jan 20, 2014 7:35 am; edited 2 times in total

Stockfish Mac app
http://stockfishchess.org/mac/

http://abrok.eu/stockfish/

Date: Wed Jan 29 18:02:13 2014

Tweak bishop PSQT tables

Tuned after 49K iterations of SPSA.

Passed both short TC:
LLR: 2.97 (-2.94,2.94) [-1.50,4.50]
Total: 14231 W: 2684 L: 2542 D: 9005

And long TC:
LLR: 2.94 (-2.94,2.94) [0.00,4.00]
Total: 87556 W: 13757 L: 13342 D: 60457

TwinFish 0.07 by Tennison (another cloner?   )
http://www.togareturns.com/downloads/twinfish/

tyuyy wrote:

TwinFish 0.07 by Tennison (another cloner?   )
http://www.togareturns.com/downloads/twinfish/

Amitis part 2 ?  It is really pathetic and just sad.

Long live Stockfish!

@peekoo wrote:

I think StockFish will surpass Houdini in 2 months  

1 month.

My game against Stockfish 290114 64 4 CPU.

White "Ahmed Kamal"
Black "Stockfish 290114 64"
Blitz 5 minutes


[pgn][Event "Blitz 5 minutes"]
[Site "Chess2u.com"]
[Date "2014.02.02"]
[Round "1"]
[White "Ahmed Kamal"]
[Black "Stockfish 290114 64 4 CPU"]
[Result "1/2-1/2"]
[PlyCount "152"]
[TimeControl "300"]

1. Nf3 {0} d5 {0} 2. d4 {1} Nf6 {0} 3. Bf4 {1} e6 {0} 4.
e3 {1} c5 {0} 5. c3 {1} Bd6 {0} 6. Bxd6 {4} Qxd6 {0} 7. Nbd2 {1} Nc6 {0} 8. Bd3
{1} O-O {5} 9. O-O {2} e5 {0} 10. dxe5 {1} Nxe5 {0} 11. Nxe5 {1} Qxe5 {0} 12.
Re1 {2} Bg4 {8} 13. f3 {4} Be6 {7} 14. e4 {0} Rfd8 {15} 15. Qc2 {5} c4 {3} 16.
Bf1 {2} Rac8 {5} 17. exd5 {7} Qxd5 {0} 18. Ne4 {10} Nxe4 {0} 19. Qxe4 {11} Qc5+
{13} 20. Qe3 {14} Qxe3+ {0} 21. Rxe3 {1} g6 {4} 22. Ree1 {13} Rd2 {5} 23. Re2 {
1} Rcd8 {3} 24. Kf2 {18} Kg7 {0} 25. Rae1 {4} Kf6 {4} 26. Rxd2 {3} Rxd2+ {2}
27. Re2 {0} Rd1 {24} 28. Re1 {9} Rxe1 {0} 29. Kxe1 {1} Ke5 {3} 30. Kf2 {11} f5
{4} 31. Be2 {23} g5 {0} 32. Bd1 {12} f4 {0} 33. Bc2 {3} Bf5 {4} 34. Bxf5 {2}
Kxf5 {3} 35. h3 {13} b5 {5} 36. Ke2 {5} Ke5 {0} 37. Kd2 {3} a6 {3} 38. Ke2 {1}
Kd5 {5} 39. Kd2 {1} Ke6 {3} 40. Ke2 {1} Ke5 {5} 41. Kd2 {1} Kd6 {8} 42. Ke2 {1}
Kc5 {5} 43. Kd2 {1} Kc6 {4} 44. a3 {6} Kd6 {4} 45. Ke2 {1} Kd7 {4} 46. Kd2 {1}
Kc6 {3} 47. Kc2 {1} Kd6 {5} 48. Kd2 {1} Kc5 {4} 49. Kc2 {1} Kd5 {4} 50. Kd2 {1}
a5 {2} 51. Kc2 {5} Kc6 {0} 52. Kd2 {2} Kb6 {4} 53. Kc2 {1} Kc5 {3} 54. Kd2 {1}
Kd6 {4} 55. Kc2 {2} Kd5 {3} 56. Kd2 {1} Kc6 {2} 57. Kc2 {1} a4 {4} 58. Kd2 {2}
Kd7 {3} 59. Ke2 {1} h6 {3} 60. Kf2 {1} Ke6 {2} 61. Ke2 {1} h5 {2} 62. Kf2 {1}
Kf6 {1} 63. Ke2 {1} Kg7 {2} 64. Kf2 {1} Kg6 {2} 65. Ke2 {1} Kh7 {3} 66. Kf2 {1}
Kh8 {6} 67. Ke2 {0} Kg7 {2} 68. Kf2 {0} h4 {2} 69. Ke2 {0} Kf7 {2} 70. Kf2 {0}
Ke6 {2} 71. Ke2 {0} Kd5 {2} 72. Kd2 {0} Kc5 {1} 73. Kc2 {1} Kd6 {2} 74. Kd2 {0}
Kc5 {2} 75. Kc2 {1} Kc6 {2} 76. Kd2 {0} Kc5 {2} 1/2-1/2[/pgn]

Nice game Ahmed.   

@Ahmed Kamal wrote:

My game against Stockfish 290114 64 4 CPU.

White "Ahmed Kamal"
Black "Stockfish 290114 64"
Blitz 5 minutes


[pgn][Event "Blitz 5 minutes"]
[Site "Chess2u.com"]
[Date "2014.02.02"]
[Round "1"]
[White "Ahmed Kamal"]
[Black "Stockfish 290114 64 4 CPU"]
[Result "1/2-1/2"]
[PlyCount "152"]
[TimeControl "300"]

1. Nf3 {0} d5 {0} 2. d4 {1} Nf6 {0} 3. Bf4 {1} e6 {0} 4.
e3 {1} c5 {0} 5. c3 {1} Bd6 {0} 6. Bxd6 {4} Qxd6 {0} 7. Nbd2 {1} Nc6 {0} 8. Bd3
{1} O-O {5} 9. O-O {2} e5 {0} 10. dxe5 {1} Nxe5 {0} 11. Nxe5 {1} Qxe5 {0} 12.
Re1 {2} Bg4 {8} 13. f3 {4} Be6 {7} 14. e4 {0} Rfd8 {15} 15. Qc2 {5} c4 {3} 16.
Bf1 {2} Rac8 {5} 17. exd5 {7} Qxd5 {0} 18. Ne4 {10} Nxe4 {0} 19. Qxe4 {11} Qc5+
{13} 20. Qe3 {14} Qxe3+ {0} 21. Rxe3 {1} g6 {4} 22. Ree1 {13} Rd2 {5} 23. Re2 {
1} Rcd8 {3} 24. Kf2 {18} Kg7 {0} 25. Rae1 {4} Kf6 {4} 26. Rxd2 {3} Rxd2+ {2}
27. Re2 {0} Rd1 {24} 28. Re1 {9} Rxe1 {0} 29. Kxe1 {1} Ke5 {3} 30. Kf2 {11} f5
{4} 31. Be2 {23} g5 {0} 32. Bd1 {12} f4 {0} 33. Bc2 {3} Bf5 {4} 34. Bxf5 {2}
Kxf5 {3} 35. h3 {13} b5 {5} 36. Ke2 {5} Ke5 {0} 37. Kd2 {3} a6 {3} 38. Ke2 {1}
Kd5 {5} 39. Kd2 {1} Ke6 {3} 40. Ke2 {1} Ke5 {5} 41. Kd2 {1} Kd6 {8} 42. Ke2 {1}
Kc5 {5} 43. Kd2 {1} Kc6 {4} 44. a3 {6} Kd6 {4} 45. Ke2 {1} Kd7 {4} 46. Kd2 {1}
Kc6 {3} 47. Kc2 {1} Kd6 {5} 48. Kd2 {1} Kc5 {4} 49. Kc2 {1} Kd5 {4} 50. Kd2 {1}
a5 {2} 51. Kc2 {5} Kc6 {0} 52. Kd2 {2} Kb6 {4} 53. Kc2 {1} Kc5 {3} 54. Kd2 {1}
Kd6 {4} 55. Kc2 {2} Kd5 {3} 56. Kd2 {1} Kc6 {2} 57. Kc2 {1} a4 {4} 58. Kd2 {2}
Kd7 {3} 59. Ke2 {1} h6 {3} 60. Kf2 {1} Ke6 {2} 61. Ke2 {1} h5 {2} 62. Kf2 {1}
Kf6 {1} 63. Ke2 {1} Kg7 {2} 64. Kf2 {1} Kg6 {2} 65. Ke2 {1} Kh7 {3} 66. Kf2 {1}
Kh8 {6} 67. Ke2 {0} Kg7 {2} 68. Kf2 {0} h4 {2} 69. Ke2 {0} Kf7 {2} 70. Kf2 {0}
Ke6 {2} 71. Ke2 {0} Kd5 {2} 72. Kd2 {0} Kc5 {1} 73. Kc2 {1} Kd6 {2} 74. Kd2 {0}
Kc5 {2} 75. Kc2 {1} Kc6 {2} 76. Kd2 {0} Kc5 {2} 1/2-1/2[/pgn]

why you gotta be so cool like this?

http://abrok.eu/stockfish/

H-file penalty and center bonus

After almost 50K at long TC it seems
slightly positive:

ELO: 1.73 +-1.8 (95%) LOS: 97.3%
Total: 47122 W: 7507 L: 7273 D: 32342