Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nf6 3. d3 d5 4. exd5 Qxd5 5. Nc3 Bb4 6. Be2 e4 7. Nd2 Bxc3 8.
bxc3 exd3 9. cxd3 Qxg2 10. Bf3 Qg6 11. Qe2+ Be6 *
Position (FEN): rn2k2r/ppp2ppp/4bnq1/8/8/2PP1B2/P2NQP1P/R1B1K2R w KQkq - 4 12
White to move.
Themes:  Opening  
Puzzle rating: 1319
Best move: Bxb7