Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. e3 d5 3. Bd3 Nf6 4. f4 c5 5. c3 Be7 6. Nf3 Nc6 7. Nbd2 cxd4 8. exd4
O-O 9. O-O a6 10. Ne5 Nd7 11. Qh5 g6 12. Bxg6 fxg6 13. Nxg6 Rf5 14. Qg4 Nf6 *
Position (FEN): r1bq2k1/1p2b2p/p1n1pnN1/3p1r2/3P1PQ1/2P5/PP1N2PP/R1B2RK1 w - - 3 15
White to move.
Themes: Double Check, Kingside Attack Middlegame  
Puzzle rating: 860
Best move: Nxe7+