Chess puzzle (Checkmate)
Moves: 1. d4 c5 2. dxc5 Qa5+ 3. Bd2 Qxc5 4. e3 Nf6 5. Nf3 e6 6. c4 Qc7 7. Bc3 Be7 8.
Nbd2 O-O 9. Bd3 Nc6 10. Qc2 h6 11. O-O Nb4 12. Bxb4 Bxb4 13. Rac1 Bc5 14. Ne4
Nxe4 15. Bxe4 f5 16. Bd3 b6 17. e4 Bb7 18. exf5 Bxf3 19. gxf3 Qf4 20. Be4 d5
21. cxd5 Bd6 22. Rfe1 exf5 23. Bd3 Qxh2+ 24. Kf1 Bf4 25. Rcd1 Qh3+ 26. Kg1 Bh2+
27. Kh1 Be5+ 28. Kg1 Qh2+ 29. Kf1 Qh3+ 30. Kg1 Rf6 31. Rxe5 *
Position (FEN): r5k1/p5p1/1p3r1p/3PRp2/8/3B1P1q/PPQ2P2/3R2K1 b - - 0 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 861
Best move: Rg6#