Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Modern_Attack
Moves: 1. e4 e5 2. Nf3 Nf6 3. d4 Nc6 4. dxe5 Nxe4 5. Qd5 Nxf2 6. Kxf2 Be7 7. Bc4 O-O
8. Nc3 Nb4 9. Qd2 d6 10. Nd5 Nxd5 11. Qxd5 Be6 12. Qe4 *
Position (FEN): r2q1rk1/ppp1bppp/3pb3/4P3/2B1Q3/5N2/PPP2KPP/R1B4R b - - 2 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1471
Best move: d5