Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nf6 3. Bb5 c6 4. Bc4 Nxe4 5. Nxe5 Qf6 6. O-O d5 7. Bxd5 *
Position (FEN): rnb1kb1r/pp3ppp/2p2q2/3BN3/4n3/8/PPPP1PPP/RNBQ1RK1 b kq - 0 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1640
Best move: cxd5