Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6. Nbd2 cxd4 7. cxd4 Nc6 8.
Bc4 Qd6 9. O-O Nxd4 10. Nxd4 Qxd4 11. Bb5+ Bd7 12. Bxd7+ Qxd7 13. Qf3 Be7 14.
Ne4 Nxe4 15. Qxe4 O-O 16. Be3 Rfd8 17. h3 Qb5 18. b3 Bf6 19. Rad1 a6 20. Rfe1
g6 21. Qf3 Bg7 22. Rc1 Rac8 23. Rxc8 Rxc8 24. Rd1 h5 25. Bd4 Rd8 26. Bxg7 Rxd1+
27. Qxd1 Kxg7 28. Qd4+ e5 29. Qd6 b6 30. b4 a5 31. a4 Qe2 32. b5 Qe1+ 33. Kh2
Qxf2 34. Qxe5+ Kh7 35. Qc7 g5 36. Qd8 Qf4+ 37. Kh1 Qe3 38. Qd5 Kg7 39. Qd1 h4
40. Qd5 f6 41. Qd7+ Kg6 42. Qd8 Qc5 43. Qg8+ Kf5 44. Qh7+ Kf4 45. Qf7 Qe5 46.
Qc4+ Ke3 47. Qb3+ Kd4 48. Qb2+ Kc4 49. Qa2+ Kb4 50. Qf2 Qd6 51. Qa2 Qd4 52. Kh2
f5 53. Kh1 g4 54. Qb1+ Kxa4 55. Qxf5 g3 56. Qg4 Qxg4 57. hxg4 Kb4 58. g5 a4 59.
g6 a3 60. g7 a2 61. g8=Q *
Position (FEN): 6Q1/8/1p6/1P6/1k5p/6p1/p5P1/7K b - - 0 61
Black to move.
Themes: Advanced Pawn Endgame, Queen Endgame Mate in 1 Promotion
Puzzle rating: 813
Best move: a1=Q#