Chess puzzle (Checkmate)
Moves: 1. g3 h5 2. Bg2 h4 3. gxh4 d5 4. Nf3 c5 5. d4 Nc6 6. dxc5 Bg4 7. Nc3 e6 8. Nd4
Bxc5 9. Be3 Be7 10. h3 Bh5 11. Qd3 Nf6 12. O-O-O O-O 13. Rhg1 Ne5 14. Qb5 a6
15. Qb3 Nc4 16. Bf3 Bxf3 17. exf3 b5 18. Nc6 Qc7 19. Nxe7+ Qxe7 20. Bg5 Rac8
21. h5 Kh8 22. h6 Rg8 23. Ne2 Ne5 24. f4 Ng6 25. hxg7+ Rxg7 26. Ng3 Qc7 27.
Bxf6 Qxf4+ 28. Qe3 Qxf6 29. Nh5 Qf5 30. Qe2 Rh7 31. Ng3 Qf6 32. Kb1 Nf4 33. Qd3
Nxd3 34. Rxd3 Qxf2 35. Rgd1 Qxc2+ 36. Ka1 Qc1+ 37. Rxc1 *
Position (FEN): 2r4k/5p1r/p3p3/1p1p4/8/3R2NP/PP6/K1R5 b - - 0 37
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 693
Best move: Rxc1#