Chess puzzle (Advantage)
Opening: Kings_Indian_Defense, Kings_Indian_Defense_Larsen_Variation
Moves: 1. d4 g6 2. c4 Nf6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be3 Re8 7. Qd2 e5 8. d5 c6
9. Bh6 cxd5 10. Nxd5 Nxe4 11. Qe3 Qa5+ *
Position (FEN): rnb1r1k1/pp3pbp/3p2pB/q2Np3/2P1n3/4QN2/PP3PPP/R3KB1R w KQ - 2 12
White to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 1515
Best move: b4