Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. c4 a6 3. Nc3 c6 4. Nf3 h6 5. g3 Nf6 6. Bg2 d5 7. cxd5 cxd5 8. O-O
Nc6 9. Re1 Be7 10. a3 Qb6 11. e4 dxe4 12. Nxe4 Nxe4 13. Rxe4 Rb8 14. Bf4 Ra8
15. Qe2 Bd7 16. Ne5 Nxe5 17. Bxe5 O-O 18. Qg4 *
Position (FEN): r4rk1/1p1bbpp1/pq2p2p/4B3/3PR1Q1/P5P1/1P3PBP/R5K1 b - - 2 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1827
Best move: f6