Chess puzzle (Checkmate)
Moves: 1. d4 g6 2. c4 Bg7 3. Nc3 Nf6 4. e4 d6 5. Bd3 O-O 6. Nge2 Nc6 7. O-O e5 8. d5
Nd4 9. Nxd4 exd4 10. Ne2 Nd7 11. b4 c5 12. bxc5 Nxc5 13. Bb2 Re8 14. f3 f5 15.
exf5 Nxd3 16. Qxd3 Bxf5 17. Qd2 Rxe2 18. Qxe2 d3 19. Qd2 Qb6+ 20. Rf2 Bxb2 21.
Qxb2 Qe3 22. Qd2 Qd4 23. Rc1 Re8 24. Kf1 h5 25. h3 h4 26. Re1 Rc8 27. Rc1 b6
28. Qc3 Qf4 29. Re1 Qh2 30. Rb2 Qh1+ 31. Kf2 Qh2 32. Rd2 Bxh3 33. Rg1 Qg3+ 34.
Kf1 Qxf3+ 35. Rf2 Qd1+ 36. Qe1 Qxe1+ 37. Kxe1 Bf5 38. Rf4 Kg7 39. Kd2 Kf6 40.
Rxh4 Kg5 41. Rd4 Rc5 42. g4 Bd7 43. Kxd3 Ra5 44. Kc3 Ra3+ 45. Kb4 Rh3 46. a4 *
Position (FEN): 8/p2b4/1p1p2p1/3P2k1/PKPR2P1/7r/8/6R1 b - - 0 46
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 998
Best move: a5#