Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Albin_Countergambit
Moves: 1. d4 d5 2. c4 e5 3. dxe5 Nc6 4. Bf4 Bb4+ 5. Nc3 d4 6. a3 Bxc3+ 7. bxc3 dxc3 8.
Nf3 Bg4 9. Qb3 Bxf3 10. exf3 Nxe5 11. Bxe5 *
Position (FEN): r2qk1nr/ppp2ppp/8/4B3/2P5/PQp2P2/5PPP/R3KB1R b KQkq - 0 11
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 951
Best move: Qd2#