French Defense Rubinstein Variation Puzzle (Rated 1004): Win Material — Tactical Refutation
This middlegame puzzle is about turning a tactical shot into a decisive material gain. White’s queen and bishop are active, while Black’s king is relatively safe but the queen-side and center are loose enough for a forcing sequence. The key idea is to notice when a defended-looking piece is actually vulnerable because a capture creates a stronger follow-up. In classical chess, these moments often decide the game without any need for a long attack.