Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Marshall_Gambit
Moves: 1. e4 e6 2. d4 d5 3. Nc3 c5 4. e5 Nc6 5. Be3 Qb6 6. Na4 Qb4+ 7. c3 Qa5 8. Nf3
cxd4 9. Bxd4 Nxd4 10. Nxd4 Bd7 11. b3 Bxa4 12. bxa4 Qxc3+ 13. Ke2 Bc5 14. Nb5
Qxe5+ 15. Kd2 Bb4+ 16. Kc2 Rc8+ 17. Kb3 Rc3+ 18. Nxc3 *
Position (FEN): 4k1nr/pp3ppp/4p3/3pq3/Pb6/1KN5/P4PPP/R2Q1B1R b k - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 870
Best move: Qxc3#