Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. d4 Bg4 4. dxe5 Bxf3 5. Qxf3 dxe5 6. Bc4 Nf6 7. O-O Bd6 8.
Qb3 Nxe4 9. Bxf7+ Kf8 10. Bd5 Nc5 11. Qf3+ Qf6 12. Qxf6+ gxf6 13. Bxb7 *
Position (FEN): rn3k1r/pBp4p/3b1p2/2n1p3/8/8/PPP2PPP/RNB2RK1 b - - 0 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 805
Best move: Nxb7