King’s Indian Defence traps: 6 mistakes at 1400-1600 Elo

October 7, 2026 · 3 min read

In the King’s Indian Defence, Black lets White build a big center and hits it later. At 1400-1600 the center is where most games turn: White pushes e5 too early, and Black puts a knight on h5 where it gets trapped.

We took the Lichess blitz and rapid games from August 2026 where both players were rated 1400 to 1600, followed the King’s Indian move by move, and had Stockfish check every position where many players took the same wrong turn. Every line below was verified by the engine. All six examples are told from Black’s side.

Part 1: punish it

Three White mistakes, three punishments. Most Black players miss them: the knight jump to g4 is the move to remember.

1. 6.e5 with the bishop on g5

After 1.d4 Nf6 2.c4 g6 3.e4 Bg7 4.Nc3 d6 5.Bg5 O-O, 8% of White players push 6.e5. After 6...dxe5 7.dxe5 Ng4!, the knight and the bishop on g7 both hit e5. After 8.Qxd8 Rxd8 9.Nd5 Nc6, e5 is weak and Black is better. Only 10% of Black players found 7...Ng4.

6.e5? and 7...Ng4! hits e5 twice.

2. 6.e5 with the bishop on f4

After 5.Bf4 O-O, 16% of White players push 6.e5. Then 6...Nh5! hits the bishop on f4. After 7.Be3 dxe5 8.dxe5 Qxd1+ 9.Rxd1 Bxe5, the e5 pawn had no defender left and Black is a pawn up.

6.e5? and 6...Nh5! wins the e5 pawn.

3. 6.Bd3, and g4 is left open

After 5.Be3 O-O, 28% of White players develop with 6.Bd3. Nothing covers g4 anymore, and 6...Ng4! jumps on the bishop. After 7.Qd2 Nxe3 8.Qxe3, Black gets the two bishops. No Black player in our games found 6...Ng4.

6.Bd3? and 6...Ng4! takes the bishop pair.

Part 2: avoid it

Now the Black mistakes that come up most in the King’s Indian at 1400-1600, why they fail, and what to play instead.

4. 5...Nh5, and the knight is trapped

After 4.Nc3 O-O 5.e5, the knight on f6 is attacked, and 14% of Black players go to the edge with 5...Nh5. Then 6.g4! leaves it no square. After 6...d6 7.gxh5, White is a piece up. Only 31% of White players saw 6.g4.

Play 5...Ne8 instead. Step back, and the game is balanced.

5...Nh5? and 6.g4! Play 5...Ne8 instead.

5. 6...Nbd7 against the Four Pawns Attack

After 4.Nc3 d6 5.f4 O-O 6.Nf3, 19% of Black players develop with 6...Nbd7. Then 7.e5! kicks the knight back home. After 7...Ne8 8.c5 c6 9.h4, White’s pawns take the space and the attack starts. White is better.

Play 6...c5 instead. Hit the center first, and the game is balanced.

6...Nbd7? and 7.e5! Play 6...c5 instead.

6. 7...Re8, the same trap again

After 4.Nf3 d6 5.Nc3 Nbd7 6.h3 O-O 7.Be3, 25% of Black players play 7...Re8. Then 8.e5! Nh5 9.g4, and the knight on h5 is trapped.

Play 7...e5 instead. Claim the center. That is the main line.

7...Re8? and 8.e5! Play 7...e5 instead.

What to take away

When White pushes e5 early, count the attackers on e5: the bishop on g7 is one of them.
If g4 is not covered, look at Ng4 against a bishop on e3.
Before you play Nh5, check that g4 does not trap the knight.
In the King’s Indian, strike the center with ...c5 or ...e5 before it rolls forward.

These patterns come from many games between players at your level, not from a theory book. Your own games have patterns too, and they are probably not the same ones. Chess X-Ray finds the moves where you lost your advantage in your chess.com or Lichess games, groups them by opening, and turns them into lessons you replay until they stick.