Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 O-O 6. Nge2 Re8 7. O-O e5 8. dxe5
dxe5 9. Nd5 c6 10. Nxf6+ Qxf6 11. Ng3 Na6 12. a3 Nc5 13. Bc2 Be6 14. Qe2 Rad8
15. b4 Nd7 16. c5 Qe7 17. Bb2 b6 18. cxb6 Nxb6 19. Rad1 Bc4 20. Bd3 Bxd3 21.
Rxd3 Rxd3 22. Qxd3 Rd8 23. Qf3 Nc4 24. Bc1 Nd2 25. Bxd2 Rxd2 26. Qc3 Qd6 27. h3
Rd3 28. Qc4 Bh6 29. Qa6 Bf4 30. Ne2 Rd1 31. Rxd1 *
Position (FEN): 6k1/p4p1p/Q1pq2p1/4p3/1P2Pb2/P6P/4NPP1/3R2K1 b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 447
Best move: Qxd1#