Chess puzzle (Advantage)
Opening: English_Opening, English_Opening_Great_Snake_Variation
Moves: 1. c4 g6 2. e3 Bg7 3. Nf3 e5 4. e4 Nc6 5. a3 Nf6 6. Nc3 O-O 7. Bd3 d6 8. h3 Nd4
9. O-O Nh5 10. Nb5 Bxh3 11. Nbxd4 exd4 12. gxh3 Qd7 13. Kh2 *
Position (FEN): r4rk1/pppq1pbp/3p2p1/7n/2PpP3/P2B1N1P/1P1P1P1K/R1BQ1R2 b - - 2 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1517
Best move: Nf4