Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7
Qxe7 9. Nxe4 dxe4 10. Ne5 f6 11. Ng6 Qb4+ 12. Qd2 Qxd2+ 13. Kxd2 Rd8 14. Rd1
Kf7 15. Nf4 e5 16. Nd5 Na6 17. Kc3 exd4+ 18. exd4 Bg4 19. Rd2 c5 20. h3 Be6 21.
Be2 Rac8 22. Ne3 Nb4 23. d5 Bd7 24. a3 Na6 25. Bg4 Bxg4 26. hxg4 Nb8 27. Nf5 a6
28. Re1 g6 29. Ng3 Nd7 30. Nxe4 Ne5 31. f3 g5 32. Rde2 Ng6 33. Ng3 Nf4 34. Re7+
Kg8 35. Nf5 Kh8 36. Nxh6 Ng6 37. R7e6 Kh7 38. Nf5 Rf8 39. Rh1+ Kg8 40. Rh6 Nf4
41. Re7 Rf7 42. Rxf7 Kxf7 43. Nd6+ Kg7 44. Nxc8 Kxh6 45. d6 Ne6 46. d7 Kg7 47.
Kd3 Kf8 48. Ke4 Nd8 49. Kf5 Kf7 50. b4 cxb4 51. axb4 b5 52. c5 Nc6 53. f4 a5
54. bxa5 b4 55. a6 b3 56. a7 b2 57. a8=Q *
Position (FEN): Q1N5/3P1k2/2n2p2/2P2Kp1/5PP1/8/1p4P1/8 b - - 0 57
Black to move.
Themes: Advanced Pawn Endgame Mate in 1 Promotion
Puzzle rating: 1667
Best move: b1=Q#