Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Other_variations
Moves: 1. Nf3 Nf6 2. g3 d6 3. Bg2 c6 4. d4 Nbd7 5. O-O g6 6. c4 Bg7 7. Nc3 e5 8. e4
exd4 9. Nxd4 O-O 10. h3 Re8 11. Re1 Qc7 12. Be3 a6 13. Qd2 c5 14. Nde2 Nb6 15.
Qd3 Be6 16. Nd5 Nfxd5 17. cxd5 Bd7 18. Nc3 c4 19. Bxb6 *
Position (FEN): r3r1k1/1pqb1pbp/pB1p2p1/3P4/2p1P3/2NQ2PP/PP3PB1/R3R1K1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 736
Best move: Qxb6