Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Old_Indian_Attack
Moves: 1. Nf3 d5 2. d3 Nc6 3. Nbd2 e5 4. g3 Nf6 5. a3 Be7 6. Bg2 O-O 7. O-O Bf5 8. e4
dxe4 9. dxe4 Nxe4 10. Nh4 Bxh4 11. Bxe4 Bxe4 12. Nxe4 Bf6 13. Qf3 Nd4 14. Nxf6+
Qxf6 15. Qxb7 Nf3+ 16. Kg2 Qf5 *
Position (FEN): r4rk1/pQp2ppp/8/4pq2/8/P4nP1/1PP2PKP/R1B2R2 w - - 3 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1019
Best move: Qxf3