Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 e6 4. e3 Bb4 5. a3 Bxc3+ 6. bxc3 O-O 7. a4 a5 8. Ba3
Re8 9. Be2 Ne4 10. Qc2 b6 11. Nf3 Ba6 12. O-O Bxc4 13. Bxc4 Nxf2 14. Bxd5 Nh3+
15. gxh3 Qxd5 16. Qg2 Qb3 17. Ne5 f6 18. Rxf6 Qxc3 19. Raf1 Qxa3 20. Qxa8 Qxe3+
21. Kh1 gxf6 22. Rg1+ Kf8 23. Qg2 fxe5 *
Position (FEN): 1n2rk2/2p4p/1p2p3/p3p3/P2P4/4q2P/6QP/6RK w - - 0 24
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1450
Best move: Qg7#