Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Damiano_Defense
Moves: 1. e4 e5 2. Nf3 f6 3. Bc4 c5 4. Nc3 d6 5. d3 Bg4 6. h3 Bh5 7. O-O Nc6 8. Bb5
Be7 9. Be3 Qb6 10. Bxc6+ Qxc6 11. b3 g5 12. g4 Bg6 13. Nd5 Bf7 14. Nxe7 Kxe7
15. Qd2 d5 16. exd5 Bxd5 17. Nh2 Nh6 18. Qc3 b6 19. b4 Bh1 *
Position (FEN): r6r/p3k2p/1pq2p1n/2p1p1p1/1P4P1/2QPB2P/P1P2P1N/R4RKb w - - 1 20
White to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 1533
Best move: f3