Benko och Blumenfeld

An opening where Black offers a pawn on the queen's side of the board to open lines and create lasting pressure.

The Benko branch in which White captures on b5 and wins a pawn while Black gains lasting pressure.

A family of responses in which White does not capture the b5-pawn and avoids the positions created by accepting it.

An active Black pawn offer combining central pressure with an advanced c-pawn and a b-pawn push.