Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Closed
Moves: 1. e4 c5 2. Nc3 e6 3. f4 d5 4. e5 a6 5. Nf3 Nc6 6. g3 f6 7. exf6 Nxf6 8. Bg2
Bd6 9. d3 O-O 10. O-O b6 11. Qe2 Bb7 12. Bd2 Qc7 13. Qxe6+ Kh8 14. Nxd5 Nxd5
15. Qxd5 Nd4 16. Qc4 *
Position (FEN): r4r1k/1bq3pp/pp1b4/2p5/2Qn1P2/3P1NP1/PPPB2BP/R4RK1 b - - 2 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1754
Best move: b5