AI SUDOKU
6x6 Sudoku
A smaller 6×6 grid split into 2×3 boxes — fill every row, column and box with the digits 1–6. Quicker than classic sudoku, and a great warm-up.
How 6×6 sudoku works
Each row, each column and each 2×3 box must contain the digits 1 to 6 exactly once — no repeats anywhere in a row, a column or a box. Some cells start filled in as fixed clues; the rest are empty for you to complete. Tap a cell to select it, then choose a digit from the number pad below the board — or use Hint if you get stuck, or Solve to reveal the finished grid. Because the grid is smaller than classic 9×9 sudoku, the same logic techniques, like a row or box that's almost full, or a cell with only one legal digit left, solve most 6×6 puzzles quickly.
Frequently asked questions
Is 6x6 sudoku easier than 9x9?
Generally yes. A 6×6 grid has only 36 cells instead of 81, so there are fewer rows, columns and boxes to scan and fewer candidate digits to track, which usually makes it faster to solve. The three sudoku rules stay exactly the same — only the grid size, box shape and digit range (1–6 instead of 1–9) change — so it's a great quick warm-up before tackling a full 9×9 puzzle.
What are the box sizes in 6x6 sudoku?
A 6×6 sudoku grid is divided into six boxes, each 2 rows tall and 3 columns wide. Every row, every column and every 2×3 box must contain the digits 1 to 6 exactly once, with no repeats.
Does every 6x6 puzzle have one solution?
Yes. Every 6×6 puzzle on this page is generated and then checked by a solver that counts how many solutions the grid has; clues are only removed while exactly one solution remains. That guarantees you can always finish the puzzle using pure logic, with no guessing required.