Bogo Indian Defense Vitolins Variation Puzzle (Rated 1131): Win Material — Discovered Attack

This middlegame puzzle shows how a discovered attack can turn a balanced position into a decisive material win. Black’s active pieces coordinate against White’s king side and loose back-rank defenders, while a pinned piece and an exposed bishop create tactical targets. The key idea is that one forcing move can open a line for a hidden attacker, making a seemingly defended piece vulnerable and leaving White unable to keep everything protected at once.