Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Levitsky_Attack
Moves: 1. d4 d5 2. Bg5 Nc6 3. e3 Bf5 4. c4 f6 5. Bh4 g5 6. Bg3 Bg7 7. Nc3 e5 8. Nxd5
exd4 9. Nxc7+ Kf7 10. Nxa8 Qxa8 11. exd4 Nge7 12. d5 Rd8 13. Qb3 *
Position (FEN): q2r4/pp2nkbp/2n2p2/3P1bp1/2P5/1Q4B1/PP3PPP/R3KBNR b KQ - 2 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 974
Best move: Nd4