Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 c5 5. a3 Ba5 6. dxc5 Ne4 7. Qc2 Bxc3+ 8.
bxc3 Nf6 9. Bg5 O-O 10. Nd2 h6 11. Bh4 b6 12. Ne4 bxc5 13. Nxf6+ gxf6 14. Rb1
Nc6 15. e3 Ne5 16. Be2 Ba6 17. Qe4 Kg7 18. Bf3 Qa5 19. Bxf6+ Kxf6 20. Qf4+ Ke7
21. Qxe5 Bxc4 22. Bxa8 Rxa8 23. Rd1 Qxa3 24. Qd6+ Kf6 25. Qd4+ Ke7 26. Qxc4 a5
27. O-O Qb2 28. Qh4+ Ke8 29. Qxh6 Qxc3 30. Qh7 Ke7 31. Rd3 Qe5 32. Rfd1 d5 33.
Qh4+ Kd6 34. Qg3 a4 35. Qxe5+ Kxe5 36. Ra1 Ke4 37. Rda3 c4 38. Rxa4 Rxa4 39.
Rxa4 Kd3 40. Kf1 c3 41. Ke1 Kc2 42. Rb4 e5 43. h4 d4 44. exd4 exd4 45. h5 d3
46. Kf1 d2 47. Rd4 d1=Q+ 48. Rxd1 Kxd1 49. h6 c2 50. h7 c1=Q 51. h8=Q *
Position (FEN): 7Q/5p2/8/8/8/8/5PP1/2qk1K2 b - - 0 51
Black to move.
Themes: Discovered Attack Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1342
Best move: Kd2#