Chess puzzle (Advantage)
Opening: English_Opening, English_Opening_Symmetrical_Variation
Moves: 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nf6 5. O-O O-O 6. Nc3 e6 7. d4 Na6 8. a3 d5
9. cxd5 Nxd5 10. dxc5 Nxc3 11. bxc3 Nxc5 12. Bb2 Qb6 13. Rb1 Rd8 14. Qc2 e5 15.
c4 *
Position (FEN): r1br2k1/pp3pbp/1q4p1/2n1p3/2P5/P4NP1/1BQ1PPBP/1R3RK1 b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1449
Best move: Bf5