E99

King's Indian Defense: Orthodox Variation, Classical System, Traditional Line

Chess diagram: King's Indian Defense: Orthodox Variation, Classical System, Traditional Line after 10…f5

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

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Statistics from Lichess

29,338 games: White 53.3% / Draw 5.8% / Black 40.9%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
King's Indian Defense: Orthodox Variation, Classical System, Benko Attack 15,59716K
11,97812K
1,2821,282
166166
118118
9090
3131
1818

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 2, 2026

Engine evaluation

+0.66 White is slightly better

Best play: 11. Nd3 b6 12. Be3 a5 13. a3 Ba6 14. Nf2 f4 15. Bd2 c5

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

King's Indian Defense: Orthodox Variation, Classical System, Traditional Line (ECO E99, Indian Defenses) is a variation of the King's Indian Defense: Orthodox Variation, Classical System, 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. Ne1 Nd7 10. f3 f5 (10 moves).

In 29,338 rated Lichess games between players rated 1600 to 2500, White won 53.3%, Black 40.9% and 5.8% were drawn. White's most played move here is 11. g4, in 53% of those games.

It continues into one named variation, King's Indian Defense: Orthodox Variation, Classical System, Benko Attack.

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How to play against the King's Indian Defense: Orthodox Variation, Classical System, Traditional Line

The most played answer, 11. g4 (King's Indian Defense: Orthodox Variation, Classical System, Benko Attack), also scores best for White: 59.3%, with White winning 55.8% and Black 37.1% of 16K games. Of the main answers, 11. Be3 scores lowest: 53.0%. Stockfish's first choice is 11. Nd3.

Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Variations (1)

Cite this page

Caissa Codex. “King's Indian Defense: Orthodox Variation, Classical System, Traditional Line (E99)”. Lichess data as of 2 Nov 2026. https://chesscodex.org/openings/kings-indian-defense-orthodox-variation-classical-system-traditional-line