4x4 Xmas

4x4 Xmas brings a festive twist to classic grid-based puzzle solving, wrapping number logic in holiday cheer. The goal is straightforward — fill a 4x4 grid so that every row, column, and region contains the right set of values without repetition.

What makes it work is the compact scale. A 4x4 grid feels approachable but still demands genuine attention, especially when multiple constraints overlap in tight corners. Mistakes become obvious quickly, which makes each correct placement feel earned.

The Christmas theme adds warmth without being distracting — a gentle backdrop that makes the puzzle feel like a cozy seasonal activity rather than a mental workout. Perfect for short sessions during the holiday season.