Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. Qd3 a5 8.
a4 Ba6 9. Qe3 Bxf1 10. Rxf1 Qc7 11. f4 e6 12. g3 d5 13. exd5 cxd5 14. Qd3 Nh6
15. Qb5+ Ke7 16. Ra3 Rab8 17. Qe2 Rhd8 18. Kf2 Nf5 19. Rd1 Kf8 20. Rd3 Bd4+ 21.
Kf1 Bb6 22. Nb5 Qc5 23. Rac3 *
Position (FEN): 1r1r1k2/5p1p/1b2p1p1/pNqp1n2/P4P2/2RR2P1/1PP1Q2P/2B2K2 b - - 19 23
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1111
Best move: Qg1#