Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Black_Mustang_Defense
Moves: 1. Nf3 Nc6 2. d4 d6 3. e3 e5 4. c4 e4 5. Nfd2 d5 6. cxd5 Qxd5 7. Bc4 Qf5 8. Qc2
Bb4 9. a3 Bxd2+ 10. Nxd2 Nf6 11. O-O O-O 12. b4 Be6 13. Bb5 *
Position (FEN): r4rk1/ppp2ppp/2n1bn2/1B3q2/1P1Pp3/P3P3/2QN1PPP/R1B2RK1 b - - 2 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1555
Best move: Qxb5