Chess puzzle (Checkmate)
Opening: Englund_Gambit_Complex, Englund_Gambit_Complex_Englund_Gambit
Moves: 1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Bg5 f6 5. exf6 Nxf6 6. Nc3 d6 7. e4 Bg4 8.
Bd3 h6 9. Bxf6 Qxf6 10. Be2 O-O-O 11. Nd5 Qe6 12. Qd3 Kb8 13. O-O-O g6 14. h3
Bxf3 15. Bxf3 Bg7 16. Kb1 Na5 17. Bg4 Qe5 18. f4 *
Position (FEN): 1k1r3r/ppp3b1/3p2pp/n2Nq3/4PPB1/3Q3P/PPP3P1/1K1R3R b - - 0 18
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 506
Best move: Qxb2#