Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Bowdler_Attack
Moves: 1. e4 c5 2. Bc4 e6 3. d3 d5 4. exd5 exd5 5. Bb5+ Nc6 6. Bf4 Nf6 7. Qe2+ Be7 8.
Nf3 Bg4 9. h3 Bh5 10. Nbd2 O-O 11. O-O-O *
Position (FEN): r2q1rk1/pp2bppp/2n2n2/1Bpp3b/5B2/3P1N1P/PPPNQPP1/2KR3R b - - 4 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 1879
Best move: Nd4