Chess puzzle (Checkmate)
Moves: 1. d4 d6 2. c4 e5 3. Nf3 e4 4. Nfd2 f5 5. e3 Nf6 6. Nc3 c6 7. b4 d5 8. Qb3 Be6
9. b5 Nbd7 10. a4 Bd6 11. a5 a6 12. c5 Be7 13. bxc6 bxc6 14. Na4 O-O 15. Nb6
Ra7 16. Nb1 Ng4 17. h3 Nh6 18. Nc3 g5 19. h4 gxh4 20. g3 Ng4 21. Ne2 hxg3 22.
fxg3 Bg5 23. Nf4 Bxf4 24. gxf4 Qf6 25. Ra2 Rf7 26. Rg2 Nf8 27. Qa4 Bd7 28. Be2
Ng6 29. Nxd7 Rfxd7 30. Bxg4 fxg4 31. Rxg4 Rab7 32. Rhg1 Rb1 33. Kd1 Rdb7 34.
Rg5 Kh8 35. f5 Ne7 36. Kc2 R1b4 37. Qa2 Rb8 38. Kd1 Nxf5 39. Qf2 Rf8 40. Qf4
Rxd4+ 41. exd4 Qxd4+ 42. Qd2 Ne3+ 43. Ke2 Qc4+ 44. Kxe3 *
Position (FEN): 5r1k/7p/p1p5/P1Pp2R1/2q1p3/4K3/3Q4/2B3R1 b - - 0 44
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1217
Best move: Rf3#