Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Staunton-Cochrane_Variation
Moves: 1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. d3 Bg7 5. Bd2 e6 6. Rb1 Nge7 7. Nf3 d5 8. Be2
dxc4 9. dxc4 O-O 10. O-O f5 11. a4 b6 12. b3 Bb7 13. Qc2 Nd4 14. Nxd4 Bxd4 15.
Bg5 Bg7 16. Rbd1 Qc7 *
Position (FEN): r4rk1/pbq1n1bp/1p2p1p1/2p2pB1/P1P1P3/1PN5/2Q1BPPP/3R1RK1 w - - 4 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1468
Best move: Nb5