French Defense Advance Variation Puzzle (Rated 1128): Fork — Win Material
A tactical fork becomes powerful when one forcing move attacks multiple valuable targets while also changing the opponent’s priorities. In this middlegame, Black’s queen has created pressure against White’s pieces, but the exposed king gives White a tempo-gaining resource. The key idea is to use check to disrupt king safety, then exploit a vulnerable bishop and win material. This is a classic tactical refutation: activity and king exposure outweigh Black’s temporary material advantage.