Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Bd2 Bc5 5. e3 Nc6 6. Nc3 Nxd2 7. Qxd2 Nxe5 8.
Nf3 Nxf3+ 9. gxf3 O-O 10. Rg1 Re8 11. O-O-O d6 12. Na4 Bb6 13. Nxb6 axb6 14.
Kb1 Be6 15. Bd3 b5 16. Qc3 g6 17. f4 bxc4 18. Bxc4 Bxc4 19. Qxc4 Qf6 20. Qc2
Ra5 21. Qxc7 Rea8 22. a3 Rxa3 23. bxa3 Rxa3 24. Kc2 Ra2+ 25. Kd3 Qf5+ 26. e4
Qxf4 27. Qc8+ Kg7 28. Qc3+ Kg8 29. Ra1 Qf3+ 30. Kc4 Qxe4+ 31. Kb3 *
Position (FEN): 6k1/1p3p1p/3p2p1/8/4q3/1KQ5/r4P1P/R5R1 b - - 1 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 909
Best move: Qa4#