Chess puzzle (Checkmate)
Moves: 1. d4 c5 2. e3 cxd4 3. exd4 d5 4. c4 Nf6 5. Nc3 dxc4 6. Bxc4 e6 7. Nf3 Bb4 8.
O-O O-O 9. Qc2 Nc6 10. Rd1 Bxc3 11. bxc3 Qc7 12. Bd3 b6 13. Bg5 Nd5 14. Bxh7+
Kh8 15. Be4 f6 16. Bh4 g5 17. Bg3 Nf4 18. Bxc6 Qxc6 19. c4 Bb7 20. Bxf4 gxf4
21. Qd2 e5 22. dxe5 fxe5 23. Nxe5 *
Position (FEN): r4r1k/pb6/1pq5/4N3/2P2p2/8/P2Q1PPP/R2R2K1 b - - 0 23
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 509
Best move: Qxg2#