Chess puzzle (Checkmate)
Moves: 1. g3 d5 2. Bg2 c6 3. c4 Bh3 4. Nf3 Bxg2 5. Rg1 Bxf3 6. exf3 Nf6 7. Nc3 e6 8.
d4 h5 9. Bg5 Be7 10. Qe2 dxc4 11. Qxc4 Nd5 12. Bd2 Nxc3 13. bxc3 h4 14. Rb1 Qc7
15. Bf4 Bd6 16. Bxd6 Qxd6 17. Rxb7 Nd7 18. gxh4 O-O 19. Rg3 Nf6 20. Qd3 Rab8
21. Rxa7 Qf4 22. Kf1 Qxh4 23. Kg2 Nh5 24. Qe4 Nf4+ 25. Kg1 Rb2 26. Ra3 Rfb8 27.
Rb3 R8xb3 28. axb3 Nh3+ 29. Kf1 Rxf2+ 30. Ke1 Qh6 31. Rxh3 *
Position (FEN): 6k1/5pp1/2p1p2q/8/3PQ3/1PP2P1R/5r1P/4K3 b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1025
Best move: Qd2#