Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Grand_Prix_Attack
Moves: 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. e5 Nxb5 7. Nxb5 a6 8. Nc3
Nh6 9. d4 cxd4 10. Qxd4 Nf5 11. Qf2 h5 12. Be3 Nxe3 13. Qxe3 O-O 14. O-O-O b5
15. Ne4 Bb7 16. Rhe1 Qa5 17. Kb1 Bc6 18. f5 gxf5 *
Position (FEN): r4rk1/3pppb1/p1b5/qp2Pp1p/4N3/4QN2/PPP3PP/1K1RR3 w - - 0 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1917
Best move: Ng3