Chess puzzle (Advantage)
Opening: English_Opening, English_Opening_Anglo-Indian_Defense
Moves: 1. c4 Nf6 2. g3 e6 3. Bg2 c6 4. d4 d5 5. cxd5 cxd5 6. Nc3 Nc6 7. Nf3 Bb4 8. O-O
O-O 9. Bf4 Nh5 10. Bg5 f6 11. Bh4 g5 12. Nxg5 *
Position (FEN): r1bq1rk1/pp5p/2n1pp2/3p2Nn/1b1P3B/2N3P1/PP2PPBP/R2Q1RK1 b - - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 914
Best move: fxg5