Chess puzzle (Checkmate)
Moves: 1. e3 d5 2. c3 e5 3. d4 e4 4. f4 Nf6 5. g3 Bg4 6. Be2 Bxe2 7. Nxe2 Bd6 8. Nd2
c6 9. O-O Qd7 10. Re1 Qh3 11. Nf1 Ng4 12. Qb3 b6 13. c4 h5 14. cxd5 h4 15. dxc6
hxg3 16. Nexg3 Nxh2 17. Qd5 Nf3+ 18. Kf2 Nxe1 19. Kxe1 Bc7 20. Qxe4+ Kf8 21.
Bd2 Na6 22. Qd5 Rd8 23. Qb5 Nb8 24. Bb4+ Kg8 25. d5 a6 26. Qd3 a5 27. Bc3 Nxc6
28. Qc4 Bxf4 29. exf4 Nb4 30. Bxb4 axb4 31. Rd1 Re8+ 32. Kd2 Qg2+ 33. Kc1 Kh7
34. Kb1 Rc8 35. Qxb4 Qc2+ 36. Ka1 Qc1+ 37. Rxc1 *
Position (FEN): 2r4r/5ppk/1p6/3P4/1Q3P2/6N1/PP6/K1R2N2 b - - 0 37
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 730
Best move: Rxc1#