Chess puzzle (Advantage)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Other_variations
Moves: 1. d4 d5 2. c4 dxc4 3. Nc3 c5 4. e3 cxd4 5. exd4 e5 6. Nf3 exd4 7. Nxd4 Bc5 8.
Ncb5 Bxd4 9. Qxd4 Qxd4 10. Nxd4 Nf6 11. Bxc4 O-O 12. O-O Nc6 13. Nf5 *
Position (FEN): r1b2rk1/pp3ppp/2n2n2/5N2/2B5/8/PP3PPP/R1B2RK1 b - - 4 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 755
Best move: Bxf5