Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 h6 4. Nc3 c6 5. d3 Nf6 6. h3 Be7 7. Bb3 Be6 8. g4
Bxb3 9. axb3 Nbd7 10. Be3 b5 11. Rxa7 *
Position (FEN): r2qk2r/R2nbpp1/2pp1n1p/1p2p3/4P1P1/1PNPBN1P/1PP2P2/3QK2R b Kkq - 0 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 680
Best move: Rxa7