Chess puzzle (Checkmate)
Moves: 1. d4 Nc6 2. Nf3 d5 3. c4 Bg4 4. e3 e5 5. Nc3 e4 6. cxd5 exf3 7. gxf3 Bd7 8.
dxc6 Bxc6 9. Bg2 Nf6 10. O-O Bd6 11. d5 Nxd5 12. Nxd5 Bxd5 13. Kh1 Bc6 14. e4
Qh4 15. f4 Bxf4 16. Bxf4 Qxf4 17. f3 O-O 18. Rg1 Rfd8 19. Qb3 Rd6 20. Qc3 Rh6
21. h3 Qg3 22. Rac1 Rxh3+ 23. Bxh3 *
Position (FEN): r5k1/ppp2ppp/2b5/8/4P3/2Q2PqB/PP6/2R3RK b - - 0 23
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 854
Best move: Qxh3#