Chess puzzle (Checkmate)
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3
e6 9. Nf3 Bg4 10. Be2 Bxf3 11. gxf3 Qh4+ 12. Bf2 Qf4 13. O-O O-O-O 14. c5 Bxc5
15. dxc5 Rxd1 16. Rfxd1 Nd5 17. Nxd5 exd5 18. Rxd5 Nxe5 19. Rad1 Nxf3+ 20. Bxf3
Qxf3 21. Bg3 c6 22. Rd7 Qe3+ 23. Kg2 Qe4+ 24. Kg1 Qg4 25. Rc7+ Kb8 26. Rxf7+
Ka8 27. Rfd7 a5 28. R1d4 Qg5 29. b4 h5 30. Kh1 h4 31. Bf4 Qf5 32. bxa5 Qb1+ 33.
Kg2 Qxa2+ 34. Rd2 h3+ 35. Kg3 Qb3+ 36. R2d3 Qe6 37. a6 Qg6+ 38. Kf3 Qg2+ 39.
Ke3 Re8+ 40. Kd4 bxa6 41. Kc3 Qg4 42. R3d4 Qf3+ 43. Kb4 Qf1 44. Kc3 Qe1+ 45.
Kc4 Qe2+ 46. Kc3 a5 47. Rxg7 Re3+ 48. Bxe3 Qxe3+ 49. Kc4 Qc1+ 50. Kd3 Qb1+ 51.
Kc4 *
Position (FEN): k7/6R1/2p5/p1P5/2KR4/7p/7P/1q6 b - - 5 51
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1921
Best move: Qc2#