Chess puzzle (Checkmate)
Opening: Kings_Gambit_Declined, Kings_Gambit_Declined_Falkbeer_Countergambit
Moves: 1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Qxd5 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 f6 8.
Qe2 Bf5 9. b3 Ne7 10. O-O-O O-O 11. dxe4 Qxe4 12. Qb5 *
Position (FEN): rn3rk1/ppp1n1pp/5p2/1Q3b2/4qP2/1PB5/P1P3PP/2KR1BNR b - - 1 12
Black to move.
Themes: Queenside Attack Opening Mate in 1 
Puzzle rating: 1307
Best move: Qxc2#