Alekhine Defense Two Pawns Attack Pin in Chess

In the Alekhine Defense Two Pawns Attack, Black often plays ...d5 and ...Bb4 (or similar) so the advancing pawns help create a pin on the opponent’s pieces. The defining idea is that the pawn pressure forces a piece to line up with a more valuable target, letting Black exploit the pinned piece with tempo. In many lines, the pin is tied to the pawn structure and the bishop’s active placement, not just a standalone tactic.