Sudoku 6x6

Mistakes: 0

Category
Brain
Players
1
Controls
Tap
Boxes
2 x 3
Loads
Instant

Controls

Tap a cellSelect it.
Tap a numberPlace it.
Tap ✕Clear the cell.
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About this game

Sudoku 6x6 uses the numbers one to six in a grid split into boxes two rows tall and three columns wide. Every row, every column and every box needs each number exactly once, which is the same rule as full sudoku on a friendlier scale.

The rectangular boxes are what make this version interesting rather than merely smaller. Because a box spans three columns but only two rows, the constraints pull differently in each direction, and that asymmetry is good preparation for the nine by nine grid.

Tips & strategy

Scan by box rather than by cell. With only six boxes, checking where a particular number can still go inside each one is faster than working through the grid square by square.

Use the rectangular shape. A box covers three columns, so placing a number in one box rules it out of three columns at once, which is a stronger constraint than the square boxes of full sudoku.

Look for lines with four or five numbers filled. The remainder is usually forced, and those free answers cascade into the boxes around them.

Never guess. Every puzzle here is solvable by deduction, and a guess that happens to be right leaves you no way to check the rest.

Questions

How big are the boxes?

Two rows by three columns, so each holds six cells.

Which numbers are used?

One to six, each once per row, column and box.

Is this easier than normal sudoku?

Considerably, which makes it a good bridge between the four by four version and the full grid.

Is every puzzle solvable?

Yes, each is generated from a complete valid grid with cells hidden.

Do I need to download anything?

No sign-up, no email, no account. Open the page and Sudoku 6x6 is ready to play straight away, on a phone or a desktop.