Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 Be7 6. O-O O-O 7. Nc3 a6 8. Bd2
b5 9. Bd3 c5 10. Ne2 c4 11. Bc2 Bb7 12. Nf4 g5 13. Nxg5 h6 14. Nf3 Kh8 15. Ne5
Bd6 16. b3 Qc7 17. Bc3 Rg8 18. bxc4 bxc4 19. Rb1 Bxe5 20. dxe5 Nd5 21. Qh5 Rg7
22. Qxh6+ Kg8 23. Nh5 f5 24. exf6 Rxg2+ 25. Kxg2 Nf4+ 26. Kg1 *
Position (FEN): rn4k1/1bq5/p3pP1Q/7N/2p2n2/2B1P3/P1B2P1P/1R3RK1 b - - 2 26
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 666
Best move: Nh3#