Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 d6 7. Bf4 a6 8.
Nxd6+ Bxd6 9. Qxd6 Qxd6 10. Bxd6 b5 11. f3 Bb7 12. O-O-O Rd8 13. Be2 Nd7 14.
Rd2 Nb6 15. Rhd1 f6 16. Bc5 Rxd2 17. Rxd2 Nd7 18. Bd6 Kf7 19. Bc7 Nde5 20. f4
Rc8 21. Bb6 Ng6 22. Rd7+ Nce7 23. Rxb7 Nxf4 24. g3 Rxc3 25. bxc3 Nxe2+ 26. Kd2
Ng1 27. Bc5 Nf3+ 28. Ke3 Ne5 29. Rxe7+ Kg6 30. Rxe6 h5 31. Rxa6 Ng4+ 32. Kf4
Ne5 33. Bd4 Nc4 34. Rc6 Na3 35. Rc5 Nxc2 36. Rxb5 Na3 37. Rb3 Nc4 38. a4 Na5
39. Ra3 Kf7 40. Bb6 Nc4 41. Rb3 g5+ 42. Kf5 *
Position (FEN): 8/5k2/1B3p2/5Kpp/P1n1P3/1RP3P1/7P/8 b - - 1 42
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1690
Best move: Nd6#