Chess puzzle (Advantage)
Opening: Kings_Indian_Defense, Kings_Indian_Defense_Orthodox_Variation
Moves: 1. d4 Nf6 2. Nf3 g6 3. c4 d6 4. Nc3 Bg7 5. e4 O-O 6. Be2 a6 7. O-O c5 8. d5 Bg4
9. h3 Bxf3 10. Bxf3 Nbd7 11. a3 Qb6 12. Rb1 e6 13. b4 Qc7 14. Be2 Nxd5 15. Nxd5
exd5 16. Qxd5 Rfe8 17. f3 *
Position (FEN): r3r1k1/1pqn1pbp/p2p2p1/2pQ4/1PP1P3/P4P1P/4B1P1/1RB2RK1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 958
Best move: Bd4+