King's Indian Defense, Four Pawns Attack

The Four Pawns Attack against the King's Indian Defense is named for White's pawns on c4, d4, e4, and f4. That formation controls many central squares and gains space, meaning White has more territory behind the pawns in which the pieces can maneuver.

The large center also has a cost. So many pawn moves consume time that could have developed pieces, and every advanced pawn can become a target. Black tries to prove this by attacking the center with pawn breaks, meaning pawn moves that challenge White's pawn formation, such as ...c5, ...e5, or, in some positions, ...f5.

White must decide whether to advance, preserve the current pawn structure, or exchange pawns when a break arrives. If the center survives, it can severely restrict Black's pieces; if it breaks apart before White finishes development, the opening of lines can favor Black. The variation therefore requires coordination between expansion and development, not pawn pushing alone.

The broad center gains space and offers targets

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f4 extends the chain from c4 through f4 and accepts the task of defending four advanced pawns.

f4 completes the four-pawn formation

White chooses more space before finishing kingside development.

1. f4 extends the chain from c4 through f4 and accepts the task of defending four advanced pawns.