Queen's Pawn Game · IV. Semi-Closed Game

King's Indian Defense

The King's Indian Defense (KID) is a popular Indian system where Black chooses to prioritize their kingside development. Although the KID setup is flexible and system-like, Black must know several concrete ideas in the middlegame to be prepared against White's many replies.

Side: black

Main line1.d4 Nf6 2.c4 g6 3.Nc3 Bg7

Characteristics

☘ AttainableShows up often enough that a learner should get regular chances to reach it.
🔱 FlexibleCan branch into either sharp or quiet structures depending on move order and player choices.
✨ HypermodernAllows the opponent central space early, then aims to undermine that center with piece pressure.
👥 PrevalentCommon enough that opponents are likely to have experience and prepared responses.
⚙ SystematicCan often be played from recurring setup ideas rather than heavy memorization of exact lines.

Strategic guide

Plans and motifs

After White plays 4.e4, Black usually follows 4...d6 to dissuade White's e-pawn from advancing to e5.
Upon completing development, Black contents the center by preparing a central pawn thrust—either ...c5 or ...e5.
If White closes the center by advancing with d5, then Black will often prepare the pawn break ...f5 and attack on the kingside.

Theory map

Common lines

After main line 4.e4 d6:
5.Nf3 — Classical Variation
5.f3 — Sämisch Variation
5.f4 — Four Pawns Attack

Train the opening

Training paths

A repertoire plan turns an opening into an ordered set of positions and branches to learn, practice, and review. Foundation paths cover the core branches. Mastery paths add deeper variations after the foundation is complete.

Foundation path