Chess puzzle (Advantage)
Opening: Kings_Indian_Attack, Kings_Indian_Attack_French_Variation
Moves: 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d3 e5 5. Nbd2 Be6 6. O-O Be7 7. e4 d4 8. a3
Nf6 9. Ng5 Kf8 10. Nxe6+ fxe6 11. Nb3 b6 12. f4 Kf7 13. f5 exf5 14. Rxf5 Rf8
15. g4 Kg8 16. g5 Nd7 17. h4 Rxf5 *
Position (FEN): r2q2k1/p2nb1pp/1pn5/2p1prP1/3pP2P/PN1P4/1PP3B1/R1BQ2K1 w - - 0 18
White to move.
Themes:  Middlegame  
Puzzle rating: 999
Best move: exf5