Indian Defense: Colle System, King's Indian Variation
Indian Defense: Colle System, King's Indian Variation is a chess opening with the ECO code A48, part of the Indian Defense family. It goes 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 d6. White opens with 1. d4 (the queen's pawn) and Black answers 1... Nf6. After 8 moves it is White to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
The moves
1. d4 – White plays the pawn to d4
1... Nf6 – Black plays the knight to f6
2. Nf3 – White plays the knight to f3
2... g6 – Black plays the pawn to g6
3. e3 – White plays the pawn to e3
3... Bg7 – Black plays the bishop to g7
4. Bd3 – White plays the bishop to d3
4... d6 – Black plays the pawn to d6
About the Indian Defense
Black answers 1.d4 with 1...Nf6, controlling e4 with a piece instead of a pawn. This flexible move can lead to many systems.
Black waits to see White's setup before choosing ...e6, ...g6 or ...c5.
Many lines use a fianchetto, with the bishop on g7 or b7.
Early ...c5 and ...b5 ideas (like the Benko) fight for the queenside.
chessGM