Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 d5 3. Nc3 e6 4. Nf3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3
Nd5 9. e4 Nxc3 10. bxc3 Bb7 11. O-O Be7 12. a4 a6 13. axb5 axb5 14. Rxa8 Qxa8
15. Ng5 h6 16. Nf3 O-O 17. Re1 Nb6 18. Bf4 Rd8 19. Bc7 Na4 20. Bxd8 Qxd8 21.
Qd2 Qa5 22. Rc1 Ba3 23. Rc2 Be7 24. e5 c5 25. Qe1 Bxf3 26. gxf3 c4 27. Be4 Nb6
28. Qb1 Na4 29. Qa1 g6 30. Kg2 Kg7 31. f4 Qd8 32. f3 h5 33. Ra2 Qd7 34. Rc2 Bh4
35. Qa3 Be7 36. Qa1 Qe8 37. Kg3 h4+ 38. Kg2 Qh8 39. h3 Qe8 40. Qb1 Qd7 41. Kf2
Kh6 42. Ke3 Kg7 43. Qd1 Nb6 44. Rb2 Nd5+ 45. Bxd5 exd5 46. Qb1 b4 47. cxb4 Qxh3
48. b5 g5 49. b6 gxf4+ 50. Kxf4 Qg3+ 51. Ke3 Bg5+ 52. Ke2 Qg2+ 53. Kd1 Qxf3+
54. Kc2 *
Position (FEN): 8/5pk1/1P6/3pP1b1/2pP3p/5q2/1RK5/1Q6 b - - 1 54
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1138
Best move: Qd3#