6×6 Sudoku in 30 seconds
Fill every empty cell with a number from 1 to 6. Each row, each column and each 2×3 box must contain the numbers 1, 2, 3, 4, 5 and 6 exactly once.
How the boxes work
The 6×6 grid is divided into six smaller boxes. Each box is two rows high and three columns wide. Just like a row or column, a box must contain every digit from 1 to 6 exactly once.
This is the main visual difference from classic 9×9 Sudoku, which uses 3×3 boxes.
How to place a number
Select an empty square and consider its row, column and box. Any number already present in one of those three units is ruled out. If only one number from 1 to 6 remains possible, that number belongs in the cell.
Sudoku Dimensions does not reveal whether a non-conflicting entry matches the hidden solution. Instead it highlights normal Sudoku rule conflicts: if a number is duplicated in a row, column or 2×3 box, all conflicting cells are marked so you can correct the rule violation yourself.
A simple first-puzzle method
- Find the row, column or box that already contains the most numbers.
- List the digits from 1 to 6 that are missing.
- Check each empty cell against its crossing row, column and box.
- Place a number when only one candidate remains.
- Repeat the scan because every confirmed number creates new information.
Use Undo deliberately
Undo is available in the browser game. If you enter something you want to reconsider, step back rather than restarting the puzzle. For learning, it is useful to notice why a number did not fit: was it already in the row, the column or the 2×3 box?
Free Play and the Daily Challenge
Free Play gives you unlimited 6×6 puzzles. The Daily Challenge gives you one dated puzzle to return to each day and tracks your local streak. Both use the same rules, so the Daily Challenge is a good way to turn a quick solving habit into a repeatable routine.