French Defense Discovered Check Puzzle (Rated 1394): Smothered Mate — Mate in 3

This puzzle is a classic mating net built around a trapped king and overloaded defenders. White’s pieces coordinate to force the black king into a cramped corner, where escape squares disappear one by one. The key idea is a discovered check that drags the king into a vulnerable setup, followed by a queen sacrifice that clears the final flight square. It’s a strong example of how a kingside attack can convert activity into a forced finish.