King's Indian Defense: Orthodox Variation, Korchnoi Attack
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Bd2
9… a5+0.50
White is slightly better. Stockfish 18, depth 18.
Analyze this positionIn the King's Indian Defense: Orthodox Variation, Korchnoi Attack (E97), reached after 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Bd2, Stockfish 18 recommends 9… a5 for Black. White is slightly better (+0.50).
Top engine moves
- +0.509… a5 10. a3 Nd7 11. Qc2 f5 12. Ng5 Nf6 13. Rae1 f4 14. g3
- +0.539… h6 10. Kh1 Nh7 11. Rg1 f5 12. exf5 Nxf5 13. Bd3 Bd7 14. Ne4
- +0.559… Kh8 10. b4 Nd7 11. Qc2 a5 12. a3 h6 13. Rae1 f5 14. exf5
Frequently asked questions
What is the best move in the King's Indian Defense: Orthodox Variation, Korchnoi Attack?
After 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Bd2, Stockfish 18 at depth 18 recommends 9… a5 for Black, continuing 10. a3 Nd7 11. Qc2 f5 12. Ng5 Nf6 13. Rae1 f4 14. g3. White is slightly better (+0.50). The next best moves are 9… h6 (+0.53) and 9… Kh8 (+0.55).
Is the King's Indian Defense: Orthodox Variation, Korchnoi Attack a good opening?
Stockfish rates the position at +0.50: white is slightly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the King's Indian Defense: Orthodox Variation, Korchnoi Attack?
E97. ECO codes classify chess openings from A00 to E99; E is the volume for indian defenses.
Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).