Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. c4 g6 4. g3 Bg7 5. Bg2 Nd4 6. Nc3 e6 7. Rb1 Ne7 8. b4 b6
9. Ne2 Nec6 10. b5 Nb4 11. O-O Nxa2 12. Bb2 Nxe2+ 13. Qxe2 O-O 14. Bxg7 Kxg7
15. d3 Nc3 *
Position (FEN): r1bq1r2/p2p1pkp/1p2p1p1/1Pp5/2P1P3/2nP1NP1/4QPBP/1R3RK1 w - - 1 16
White to move.
Themes: Pin Middlegame  
Puzzle rating: 1138
Best move: Qb2