From Nikitin-Kasparov, 1981

Black to move and win

3 moves left...[Need a hint?]

[Hide]Hint 1: First, find a checkmate if the queen is not on f2

Hint 2: Then, get the queen off the square f2[/Hide]

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[fen]K1N2R2/PP4N1/2n4P/6P1/n4P2/p4bB1/1pp5/1k1r1Bq1[/fen]

From Nikitin-Kasparov, 1981

Black to move and win

3 moves left...[Need a hint?]

[Hide]Hint 1: First, find a checkmate if the queen is not on f2

Hint 2: Then, get the queen off the square f2[/Hide]

From Nikitin-Kasparov, 1981

Black to move and win

3 moves left...[Need a hint?]

[Hide]Hint 1: First, find a checkmate if the queen is not on f2

Hint 2: Then, get the queen off the square f2[/Hide]

[fen]1kbr3r/pp6/8/P1n2ppq/2N3n1/R3Q1P1/3B1P2/2R2BK1[/fen]

Stamma, 1737 (Mating Attack)

White to move and win.

8 moves left...[Need a hint?]

[Hide]Hint 1: Give up material for a check along the h2-b8 diagonal.

Hint 2: Calculate forcing moves first.[/Hide]

Stamma, 1737 (Mating Attack)

White to move and win.

8 moves left...[Need a hint?]

[Hide]Hint 1: Give up material for a check along the h2-b8 diagonal.

Hint 2: Calculate forcing moves first.[/Hide]

[fen]7k/pp4rp/2nQ1p2/3p4/4b2N/8/Pq3PPP/3RR1K1[/fen]

From Mason - S. Clarke, 2002/3

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Remove a black defender.

Hint 2: The finish features a nice knight sacrifice.[/Hide]

From Mason - S. Clarke, 2002/3

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Remove a black defender.

Hint 2: The finish features a nice knight sacrifice.[/Hide]

1.Rxe4 Rg8

2.Red4 h6

3.Qxf6+ Kh7

4.Nf5 Rg5

5.Qxh6+ Kg8

6.Qxg5+ Kf7

7.Re1 Qe2

8.Rxe2 Ne5

9.Rxe5 a6

10.Qg7+

2.Red4 h6

3.Qxf6+ Kh7

4.Nf5 Rg5

5.Qxh6+ Kg8

6.Qxg5+ Kf7

7.Re1 Qe2

8.Rxe2 Ne5

9.Rxe5 a6

10.Qg7+

@jnhes wrote:[fen]7k/pp4rp/2nQ1p2/3p4/4b2N/8/Pq3PPP/3RR1K1[/fen]

From Mason - S. Clarke, 2002/3

White to move and win.

4 moves left...

1. Rxe4 dxe4

2. Qf8+ Rg8

3. Ng6+ hxg6

4. Qh6#

[fen]1r2rk2/3b1pp1/p1p1p2p/q3P3/5Q1P/2NB2R1/PPP3P1/2K5[/fen]

Keres - Szabo, 1955

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Break down black's defenses with a sacrifice.

Hint 2: After that, queen and bishop work together to finish the job.[/Hide]

Keres - Szabo, 1955

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Break down black's defenses with a sacrifice.

Hint 2: After that, queen and bishop work together to finish the job.[/Hide]

@jnhes wrote:[fen]1r2rk2/3b1pp1/p1p1p2p/q3P3/5Q1P/2NB2R1/PPP3P1/2K5[/fen]

Keres - Szabo, 1955

White to move and win.

4 moves left...[Need a hint?]

Rxg7...Ke7

Qf6+...Kf8

Qf7++

Rxg7...Kxg7

Qf6+...Kf8

Bg6...Kg8

Qxf7+...Kh8

Qh7++

________________

Core_Engine_Tester_CCRL

[fen]1K2R3/PPQ3PP/2P3N1/6p1/8/3pnR1p/ppp4q/1kr1r3[/fen]

Unexpected Move

Black to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Qxf2 is not the first move, I promise.

Hint 2: Bring your knight into things.[/Hide]

Unexpected Move

Black to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Qxf2 is not the first move, I promise.

Hint 2: Bring your knight into things.[/Hide]

[fen]5r1r/1b1n1p1n/pq1p1k2/1p1P1p1p/1P1pP3/P2B2QP/3B1PP1/2R2R1K[/fen]

E. Atalik - Skripchenko, 2006

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Use an interference sacrifice to undermine the d6 square's defense

Hint 2: Start with the rook...[/Hide]

E. Atalik - Skripchenko, 2006

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Use an interference sacrifice to undermine the d6 square's defense

Hint 2: Start with the rook...[/Hide]

[fen]8/1pk1p1b1/p3Pp2/P1KP1p1p/3B1P1P/6P1/8/8[/fen]

Hort-Donner, 1972

White to move and win

4 moves left...[Need a hint?]

[Hide]Hint 1: You need to break through black's fortress

Hint 2: Activate your bishop[/Hide]

Hort-Donner, 1972

White to move and win

4 moves left...[Need a hint?]

[Hide]Hint 1: You need to break through black's fortress

Hint 2: Activate your bishop[/Hide]

[fen]1r2b1r1/1p1R2bk/p3N2p/2P2p2/2B1p3/4P1P1/P4P2/4K2R[/fen]

From Suetin - Ceskovsky, 1972

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Start with a sacrifice.

Hint 2: Remove the black king's defenders.[/Hide]

From Suetin - Ceskovsky, 1972

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Start with a sacrifice.

Hint 2: Remove the black king's defenders.[/Hide]

[fen]2r2rk1/pp1bqpp1/2nppn1p/2p3N1/1bP5/1PN3P1/PBQPPPBP/3R1RK1[/fen]

Uhlmann - Schwarz, 1975

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Don't worry about the hanging knight.

Hint 2: Find a move to activate your queenside pieces and get rid of the key f6 knight.[/Hide]

Uhlmann - Schwarz, 1975

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Don't worry about the hanging knight.

Hint 2: Find a move to activate your queenside pieces and get rid of the key f6 knight.[/Hide]

[fen]8/1r6/P4rP1/p7/K2pP2R/4p1R1/1p1k4/8[/fen]

Gorini - Ju. Bolbochan, 1949

Black to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Note that the white king is trapped.

Hint 2: Reposition your queenside rook to deliver mate.[/Hide]

Gorini - Ju. Bolbochan, 1949

Black to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Note that the white king is trapped.

Hint 2: Reposition your queenside rook to deliver mate.[/Hide]

[fen]2krr3/1p1n1p1p/p1bB1np1/8/P1R1p3/1PN5/2P1BPPP/3R2K1[/fen]

Power of the Two Bishops

White to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Break down the black king's defenses.

Hint 2: bring the e2 bishop into the attack.[/Hide]

Power of the Two Bishops

White to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Break down the black king's defenses.

Hint 2: bring the e2 bishop into the attack.[/Hide]

[fen]r1bqk2r/pp1nbppp/2pp3n/4p1N1/P1BPP3/8/1PP2PPP/RNBQK2R[/fen]

Quick Attack

White to move and win.

7 moves left...[Need a hint?]

[Hide]Hint 1: Does Bxf7+ still work?

Hint 2: White needs to use knight fork threats to trap black's queen.[/Hide]

Quick Attack

White to move and win.

7 moves left...[Need a hint?]

[Hide]Hint 1: Does Bxf7+ still work?

Hint 2: White needs to use knight fork threats to trap black's queen.[/Hide]

[fen]3r1q1k/p5b1/1r3p1p/1ppBpQpP/4P3/2P3P1/PP1R1PK1/3R4[/fen]

Trifunovic - Aaron, 1962

White to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Exploit the weak light squares around black's king.

Hint 2: Start with a crushing discovery/mate threat.[/Hide]

Trifunovic - Aaron, 1962

White to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Exploit the weak light squares around black's king.

Hint 2: Start with a crushing discovery/mate threat.[/Hide]

[fen]8/6p1/3K4/R7/2k4P/pp4P1/8/8[/fen]

From Beaty - Golombek, 1964

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: You must stop black's pawns immediately.

Hint 2: If you can get black's a- and b-pawns, you'll win, even without your rook.[/Hide]

From Beaty - Golombek, 1964

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: You must stop black's pawns immediately.

Hint 2: If you can get black's a- and b-pawns, you'll win, even without your rook.[/Hide]

[fen]r1b1k1nr/ppp2ppp/3p4/2qNn3/4PB2/8/PPP2PPP/R2QKB1R[/fen]

Cute Tactic

White to move and win

3 moves left...[Need a hint?]

[Hide]Hint 1: That queen is awkwardly placed.

Hint 2: There's a fork in there somewhere[/Hide]

Cute Tactic

White to move and win

3 moves left...[Need a hint?]

[Hide]Hint 1: That queen is awkwardly placed.

Hint 2: There's a fork in there somewhere[/Hide]

[fen]1kr5/1r4pp/1PQ5/4pp2/R7/3q3P/5PP1/6K1[/fen]

Niederman - Zuks, 1895

White to move and win.

6 moves left...[Need a hint?]

[Hide]Hint 1: Pawn and queen are enough to mate.

Hint 2: Reposition the queen to deliver mate.[/Hide]

Niederman - Zuks, 1895

White to move and win.

6 moves left...[Need a hint?]

[Hide]Hint 1: Pawn and queen are enough to mate.

Hint 2: Reposition the queen to deliver mate.[/Hide]

[fen]2r3k1/1p3pp1/p1b1pq1p/8/3Q4/1BP4P/PP3PP1/4R1K1[/fen]

Adams - Bareev, 2004

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Simplify the position.

Hint 2: Play a temporary sacrifice.[/Hide]

Adams - Bareev, 2004

White to move and win.

4 moves left...[Need a hint?]

[Hide]Hint 1: Simplify the position.

Hint 2: Play a temporary sacrifice.[/Hide]

[fen]r1b2rk1/p2R1pp1/4p3/2R1N3/8/1P2nP2/PB4PP/6K1[/fen]

Gubnitsky-Weiss,1978

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Does white have to move the d7 rook?

Hint 2: Find a key mating idea.[/Hide]

Gubnitsky-Weiss,1978

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Does white have to move the d7 rook?

Hint 2: Find a key mating idea.[/Hide]

[fen]3qr1k1/p4p1p/1n1p2pP/8/2p2N1Q/2P1R1P1/1P3P2/6K1[/fen]

Terpugov - Kahn, 1951

White to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Create a double mate threat.

Hint 2: Use a queen move to threaten mate on e8 and mate on g7.[/Hide]

Terpugov - Kahn, 1951

White to move and win.

2 moves left...[Need a hint?]

[Hide]Hint 1: Create a double mate threat.

Hint 2: Use a queen move to threaten mate on e8 and mate on g7.[/Hide]

[fen]6k1/r4p2/2P3p1/1Pp5/1r6/7P/1P3RP1/5RK1[/fen]

From Arlandi - Grivas, 1985/86

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Is it possible to get the black rook off the second rank?

Hint 2: If white can ensure the c-pawn will queen, she can give up a rook.[/Hide]

From Arlandi - Grivas, 1985/86

White to move and win.

3 moves left...[Need a hint?]

[Hide]Hint 1: Is it possible to get the black rook off the second rank?

Hint 2: If white can ensure the c-pawn will queen, she can give up a rook.[/Hide]

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