Zukertort Opening Tennison Gambit Discovered Attack Puzzle (Rated 1417): Win Material — Discovered Attack

This middlegame puzzle shows a classic tactical idea: using a forcing check to open lines and then exploiting a discovered attack on a vulnerable target. White’s active pieces coordinate against the black king’s shelter and loose queenside pieces, while the black knight creates tactical tension by attacking multiple white pieces. The key is recognizing that the forcing move does more than win tempo — it changes the geometry of the position and exposes a major weakness on the b7 square.