Chess puzzle (Advantage)
Opening: Bird_Opening, Bird_Opening_Other_variations
Moves: 1. f4 b6 2. Nf3 Bb7 3. b3 e6 4. Bb2 Bxf3 5. exf3 Qh4+ 6. g3 Qd8 7. Nc3 Nf6 8.
Bd3 Bc5 9. Qe2 O-O 10. O-O-O a5 11. Ne4 Be7 12. g4 d5 13. Ng5 a4 14. Kb1 axb3
15. cxb3 Nc6 16. Bc3 Bb4 17. Bxf6 *
Position (FEN): r2q1rk1/2p2ppp/1pn1pB2/3p2N1/1b3PP1/1P1B1P2/P2PQ2P/1K1R3R b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1031
Best move: Qxf6