Chess puzzle (Advantage)
Opening: Grunfeld_Defense, Grunfeld_Defense_Exchange_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8.
Be3 Qa5 9. Qd2 Nc6 10. h3 cxd4 11. cxd4 Qxd2+ 12. Kxd2 f5 13. e5 Be6 14. Bb5
O-O 15. Bxc6 bxc6 16. Rhc1 *
Position (FEN): r4rk1/p3p1bp/2p1b1p1/4Pp2/3P4/4BN1P/P2K1PP1/R1R5 b - - 1 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1434
Best move: f4