Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. e5 Bf5 3. d4 e6 4. a3 c5 5. c3 cxd4 6. cxd4 Nc6 7. Nf3 Qa5+ 8. Nc3
Bb4 9. Bd2 Be7 10. Ne4 Qb6 11. Nd6+ Bxd6 12. exd6 Nf6 13. Bg5 Ne4 14. Bd3 Nxg5
15. Nxg5 Bxd3 16. Qxd3 Qxd4 17. Qc2 Qe5+ 18. Kd1 Qxg5 19. g3 O-O 20. h4 Qf6 21.
Kc1 Rfd8 22. g4 Rxd6 23. g5 Qf3 24. Rg1 Nd4 25. Qc7 Rad8 26. Kb1 Ne2 27. Re1
Qxf2 28. Ka2 Ng3 29. Rg1 d4 30. Rad1 d3 31. Qxb7 d2 32. h5 Rd3 33. g6 hxg6 34.
hxg6 fxg6 35. Qe7 Qb6 36. Qg5 Rc8 37. Qxg6 Rb8 38. Rb1 Qb3+ 39. Ka1 Qxa3+ 40.
bxa3 *
Position (FEN): 1r4k1/p5p1/4p1Q1/8/8/P2r2n1/3p4/KR4R1 b - - 0 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 940
Best move: Rxa3#