Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Dragon_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Qd2 O-O 8.
O-O-O Re8 9. Bh6 Bh8 10. Bc4 Nc6 11. Nxc6 bxc6 12. f4 Qb6 13. e5 Ng4 14. Bg5
Nf2 *
Position (FEN): r1b1r1kb/p3pp1p/1qpp2p1/4P1B1/2B2P2/2N5/PPPQ1nPP/2KR3R w - - 3 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1502
Best move: Na4