Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ Qxf6 6. d4 c5 7. Bg5 Qg6 8.
dxc5 Nc6 9. Bb5 Bd7 10. Be3 Qxg2 11. Rg1 Qh3 12. Rg3 Qf5 13. Rg5 Qf6 14. c3 h6
15. Rg3 a6 16. Be2 Be7 17. b4 Qxc3+ 18. Bd2 Qf6 19. a3 Nd4 20. Bc3 Nxf3+ 21.
Rxf3 Qg5 22. Rg3 Qh4 23. Bxg7 Rg8 24. Qd4 Qxh2 25. O-O-O Bg5+ 26. Kb1 O-O-O 27.
Bf3 Bc6 28. Qb2 Rxd1+ 29. Bxd1 Rd8 30. Bc2 Qh1+ 31. Ka2 Rd2 32. Bc3 Bd5+ 33.
Qb3 Bxb3+ 34. Kxb3 Rxc2 35. Kxc2 Qc1+ 36. Kb3 Qb1+ 37. Kc4 b5+ 38. cxb6 Kb7 39.
Bd4 Qe4 40. Kc3 e5 41. Be3 Bxe3 42. Rxe3 Qd4+ 43. Kc2 f5 44. Rg3 Kxb6 45. Rg6+
Kb5 46. Kb3 e4 *
Position (FEN): 8/8/p5Rp/1k3p2/1P1qp3/PK6/5P2/8 w - - 0 47
White to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1015
Best move: a4#