King's Indian Defense: Orthodox Variation, Classical System, Benko 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. Ne1 Nd7 10. f3 f5 11. g4
The King's Indian Defense: Orthodox Variation, Classical System, Benko Attack is a chess opening classified as ECO E99, 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 11. g4. It is a line of the King's Indian Defense. Black is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 9 times by this move order. White won 22%, 0% were drawn and Black won 78%. The most popular continuation is 11… f4 (44% of games).
Engine evaluation: +0.13 (Stockfish, depth 44; best line 11… f4 12. h4 Bf6 13. Ng2 Kh8 14. g5)
- ECO
- E99
- Moves
- 21 plies
- FEN
r1bq1rk1/pppnn1bp/3p2p1/3Ppp2/2P1P1P1/2N2P2/PP2B2P/R1BQNRK1 b - - 0 11- PGN
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 11. g4
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 1500-1999 | 2 | |
| 2000+ | 7 | |
| All | 9 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 11… f4 | 4 (44%) | |
| 11… Nf6 | 3 (33%) | |
| 11… a5 | 1 (11%) | |
| 11… fxg4 | 1 (11%) |
Master games
75 over-the-board games are classified under this line (White 52%, draw 23%, Black 25%). The strongest:
- GM Anton Smirnov (2597) – GM Rinat Jumabayev (2654) 1/2-1/2 · Asian Nations Online Cup · 2020-10-18
- GM Vladimir Belov (2614) – GM Ngoc Truong Son Nguyen (2634) 0-1 · World Blitz 2015 · 2015-10-13
- IM Rene Stern (2513) – GM Arkadij Naiditsch (2724) 1/2-1/2 · Bundesliga 2013-14 · 2014-02-09
- GM Vladimir Belov (2614) – IM Daniil Yuffa (2474) 1-0 · 26th Czech Rapid G1 2015 · 2015-07-23
- GM Anton Smirnov (2597) – IM Rudik Makarian (2442) 1/2-1/2 · RUS-AUS U16 Team Battle 2 · 2020-07-04
Highest-rated Lichess games
- Bogdanovi (2489) – juanraguilera (2431) 1-0 · 2026-09-05 · 180 + 2s
- Deninho (2384) – EdVaRd08 (2471) 0-1 · 2026-09-03 · 180 + 2s
- Vitalius84 (2260) – Verstraetenkakker (2309) 0-1 · 2026-09-01 · 180 + 2s
Comes from
King's Indian Defense: Orthodox Variation, Classical System, Traditional Line 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
More King's Indian Defense lines (all)
- King's Indian Defense: Fianchetto Variation E60
- King's Indian Defense: Fianchetto Variation, Immediate Fianchetto E60
- King's Indian Defense: Normal Variation, King's Knight Variation E60
- King's Indian Defense: Santasiere Variation E60
- King's Indian Defense: Semi-Classical Variation, Benoni Variation E60
- King's Indian Defense: Semi-Classical Variation, Hollywood Variation E60
- King's Indian Defense E61
- King's Indian Defense: Fianchetto Variation, Benjamin Defense E61
- King's Indian Defense: Semi-Classical Variation E61
- King's Indian Defense: Semi-Classical Variation, Exchange Variation E61
- King's Indian Defense: Semi-Classical Variation, Queenside Storm Line E61
- King's Indian Defense: Smyslov Variation E61
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.