Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Qb6 5. Nc3 c4 6. Rb1 Nc6 7. Be2 Bf5 8. O-O
Rc8 9. a3 Qa5 10. Ne5 h6 11. Bf3 e6 12. Kh1 Be7 13. Qe2 O-O 14. g4 Bh7 15. Rg1
Nxe5 16. Bxe5 Nd7 17. Bf4 Bg5 18. Bg3 Nb6 19. h4 Be7 20. g5 hxg5 21. hxg5 Na4
22. Nxa4 Qxa4 23. c3 Qc2 24. Qxc2 Bxc2 25. Rbc1 Bf5 26. Be5 Rc6 27. Rg3 Rb6 28.
Kg2 Rxb2 29. Rh1 f6 30. gxf6 Bxf6 31. Bd6 Rf7 32. Bb4 b6 33. Bg4 Be4+ 34. Bf3
Bxf3+ 35. Rxf3 Bg5 36. Rh8+ Kxh8 37. Rxf7 Bxe3 38. Kg3 Bg5 39. Rxa7 Kh7 40. f4
Bf6 41. Rb7 Kg6 42. Rxb6 Kf5 43. a4 Ra2 44. a5 Bd8 45. Rb5 g5 46. fxg5 Bxg5 47.
Rb6 Bf4+ 48. Kf3 Rh2 49. a6 Ra2 50. Bc5 e5 51. Rd6 *
Position (FEN): 8/8/P2R4/2Bppk2/2pP1b2/2P2K2/r7/8 b - - 1 51
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 883
Best move: e4#