Chess puzzle (Advantage)
Opening: Grunfeld_Defense, Grunfeld_Defense_Three_Knights_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nf3 d5 4. Nc3 dxc4 5. e4 Bg7 6. Bxc4 O-O 7. O-O Nc6 8.
Be3 b6 9. d5 Na5 10. Bb5 Bb7 11. b4 c6 12. Bd3 cxd5 13. exd5 Bxd5 *
Position (FEN): r2q1rk1/p3ppbp/1p3np1/n2b4/1P6/2NBBN2/P4PPP/R2Q1RK1 w - - 0 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1798
Best move: bxa5