Chess puzzle (Advantage)
Opening: Modern_Defense, Modern_Defense_Other_variations
Moves: 1. d4 g6 2. Bf4 Bg7 3. Nf3 d6 4. c3 Nd7 5. Nbd2 e5 6. dxe5 dxe5 7. Bg3 f5 8. e3
Ne7 9. Bb5 O-O 10. Bxd7 Bxd7 11. Nxe5 Bc6 12. Nxc6 Nxc6 13. O-O g5 14. Nb3 Qf6
15. h3 f4 16. exf4 gxf4 17. Bh2 f3 18. g4 *
Position (FEN): r4rk1/ppp3bp/2n2q2/8/6P1/1NP2p1P/PP3P1B/R2Q1RK1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 2247
Best move: Rad8