Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Classical_Attack
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Nc3 Nxc3 7. bxc3 Be7 8.
Bb5+ c6 9. Ba4 O-O 10. O-O Bg4 11. Rb1 Nd7 12. Rxb7 Qc8 13. Rb1 Nb6 14. Bb3 Re8
15. Re1 Qd7 16. Qd3 Bf5 17. Qd2 Be4 18. c4 *
Position (FEN): r3r1k1/p2qbppp/1np5/3p4/2PPb3/1B3N2/P1PQ1PPP/1RB1R1K1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1715
Best move: Bxf3