Daily Hard Mini Sudoku — 6×6

The daily hard mini sudoku is the hardest tier we generate at 6×6 — sparse givens, requiring real chain logic and pattern recognition despite the smaller grid. Don't let the size fool you: a hard 6×6 can genuinely take 8-15 minutes, since the 2×3 box geometry interacts with the row and column constraints in less obvious ways than a 9×9's 3×3 boxes do, and there are fewer cells available to fan out hidden pairs and pointing pairs. A fresh puzzle every visit means the daily hard mini never repeats. The hard 6×6 tier is what makes the format genuinely interesting for experienced solvers — it's small enough to finish in a single sitting, technique-heavy enough to feel earned. Create a free account to save your daily hard mini solve times and compare them with the global leaderboard.