Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Black_Mustang_Defense
Moves: 1. Nf3 Nc6 2. b3 e5 3. Bb2 d6 4. e4 h6 5. d3 Nf6 6. g3 Be7 7. Bg2 Be6 8. O-O
Bg4 9. Nbd2 O-O 10. Nc4 a6 11. Qd2 b5 12. Ne3 Be6 13. Nh4 Ng4 14. Nhf5 Bg5 15.
Qe2 Nxe3 16. Nxe3 Qf6 17. Nf5 Bxf5 *
Position (FEN): r4rk1/2p2pp1/p1np1q1p/1p2pbb1/4P3/1P1P2P1/PBP1QPBP/R4RK1 w - - 0 18
White to move.
Themes:  Middlegame  
Puzzle rating: 1122
Best move: exf5