Chess puzzle (Advantage)
Opening: East_Indian_Defense, East_Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. b3 d5 5. Bb2 Bf5 6. Nbd2 Nbd7 7. Bd3 Bxd3 8.
cxd3 O-O 9. e4 dxe4 10. dxe4 e5 11. dxe5 Ng4 12. h3 Ngxe5 13. Nxe5 Nxe5 14. O-O
Qg5 *
Position (FEN): r4rk1/ppp2pbp/6p1/4n1q1/4P3/1P5P/PB1N1PP1/R2Q1RK1 w - - 2 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1707
Best move: f4