How to solve Mini Sudoku

Each row, column and bold 2×3 box must contain 1–6 exactly once. Given numbers cannot change. Select an empty cell, then a number.

Start with one cell, not a guess

Check the cell’s row, column and 2×3 box. Remove the numbers already present to find candidates. These puzzles are verified to be solvable by repeatedly finding cells with one candidate.

Example: a row with 1, 2, 3, 4, 5 and one blank needs 6. Check all three groups for other cells too.

Daily puzzle

The daily puzzle changes at midnight in Korea (UTC+9). Everyone gets the same puzzle for each date.

Free practice

Progress stays in this browser for up to 30 days. Only the latest practice puzzle is kept.

There is no public leaderboard. Results are local practice records and include hints used.