Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 c5 3. d5 b5 4. b3 g6 5. Bb2 Bg7 6. e4 d6 7. f3 bxc4 8. bxc4 O-O
9. Nd2 Nbd7 10. Bc3 e6 11. dxe6 fxe6 12. Nb3 Qe7 13. Qd2 d5 14. O-O-O d4 15.
Ba5 Bb7 16. Bd3 Bc6 17. Ne2 Rab8 18. Kb2 Rb7 19. Ka1 Rfb8 20. Bc2 Ne5 21. Bd3
Ba4 22. Nec1 Qd7 23. h3 Bf8 24. f4 Nc6 25. g4 Qc8 26. e5 Nd7 27. h4 Nb4 28.
Bxb4 Rxb4 29. h5 Qa6 30. hxg6 Bxb3 31. Nxb3 Rxb3 32. gxh7+ Kh8 33. Rb1 Qa3 34.
Rxb3 Rxb3 35. Rb1 Rxd3 36. Qc2 Nb6 37. f5 Rc3 38. Qd2 Nxc4 39. Qg5 Qxa2+ 40.
Kxa2 *
Position (FEN): 5b1k/p6P/4p3/2p1PPQ1/2np2P1/2r5/K7/1R6 b - - 0 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1045
Best move: Ra3#