Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. cxd5 Qxd5 5. Nc3 Qd8 6. e3 e5 7. h3 exd4 8.
hxg4 dxc3 9. Qxd8+ Rxd8 10. bxc3 Nf6 11. Bb5 Nxg4 12. Nd4 Rd6 13. Ba3 Rxd4 14.
Bxf8 Rd5 15. Bxc6+ bxc6 16. Bxg7 Rg8 17. Rxh7 Rg5 18. Bh6 Nxh6 19. Rxh6 Rxg2
20. Ke2 R8g6 21. Rh8+ Ke7 22. Rd1 Rf6 23. Rf1 c5 24. Ra8 Ra6 25. Kf3 Rgg6 26.
Rc8 Kd7 27. Rf8 Rgf6+ 28. Ke4 Rxa2 29. Rd1+ Kc6 30. f4 Rc2 31. Kd3 Ra2 32. Rf1
a5 33. e4 Rd6+ 34. Kc4 Ra4+ 35. Kb3 Rxe4 36. Rxf7 Rd2 37. Ra1 Kb6 38. f5 c4+
39. Ka4 Re5 40. Rb1+ Kc6 41. Rf6+ Kd7 42. Rf7+ Ke8 43. Rxc7 *
Position (FEN): 4k3/2R5/8/p3rP2/K1p5/2P5/3r4/1R6 b - - 0 43
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 868
Best move: Ra2#