Slav Defense Geller Gambit Puzzle (Rated 1412): Crush a Pin — Decisive Middlegame Tactics
This puzzle is a classic middlegame example of a crushing pin turning into a tactical refutation. White’s pieces are coordinated around the enemy king, with a pinned defender and a vulnerable back line creating immediate pressure. The key idea is that a forcing check can drag the king into a worse square, after which the follow-up wins material by exploiting the pinned piece and the overloaded queen-side defenders. It is a strong example of how king safety can outweigh raw material.