Chess puzzle (Advantage)
Opening: Grunfeld_Defense, Grunfeld_Defense_Flohr_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+ c6 6. cxd5 Nxd5 7. e4 Nb6 8.
Qc2 Bg4 9. Ne5 Be6 10. Be3 O-O 11. f4 f5 12. Bd3 fxe4 13. Bxe4 N8d7 14. O-O Nc4
15. Nxc4 Bxc4 16. Rf2 Nf6 17. Bf3 e6 18. b3 Bd5 19. Ne4 *
Position (FEN): r2q1rk1/pp4bp/2p1pnp1/3b4/3PNP2/1P2BB2/P1Q2RPP/R5K1 b - - 2 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1434
Best move: Bxe4