Chess puzzle (Advantage)
Opening: Kings_Indian_Defense, Kings_Indian_Defense_Orthodox_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 b6 7. O-O Bb7 8. Qc2
Nc6 9. d5 Nb4 10. Qa4 a5 11. h3 c6 12. a3 Na6 13. dxc6 Nc5 14. Qb5 *
Position (FEN): r2q1rk1/1b2ppbp/1pPp1np1/pQn5/2P1P3/P1N2N1P/1P2BPP1/R1B2RK1 b - - 2 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1225
Best move: Ba6