Cochrane Gambit Puzzle (Rated 1388): Win a Pin — Tactical Refutation
This middlegame puzzle is built around a powerful pin on the enemy queen and king line. White’s active bishop and queen create direct pressure against the black king’s shelter, while the pinned queen becomes vulnerable to a forcing sequence. The key idea is not a flashy attack for its own sake, but a tactical refutation that wins material by exploiting overload and the inability of a defender to cover everything at once. In classical chess, these patterns often decide games quickly.