A 4×4 Sudoku uses only the numbers 1, 2, 3 and 4. It's the friendliest way into Sudoku for young kids and complete beginners, with the same rules as the big 9×9 grid.
Rules of 4×4 Sudoku
Each row has 1, 2, 3 and 4, once each.
Each column has 1, 2, 3 and 4, once each.
Each box (2 rows by 2 columns, with thick borders) has 1, 2, 3 and 4, once each.
Three 4×4 puzzles with answers
Suitable for ages 4 to 7. Tap "Show the answer" to check.
2
4
2
4
1
3
4×4 Sudoku #1
Show the answer
1
2
4
3
4
3
2
1
3
4
1
2
2
1
3
4
1
2
2
4
3
4
4×4 Sudoku #2
Show the answer
1
2
4
3
3
4
1
2
4
3
2
1
2
1
3
4
1
2
1
3
2
3
4×4 Sudoku #3
Show the answer
1
3
2
4
2
4
3
1
3
1
4
2
4
2
1
3
Tips
Start with a row, column or box that has only one empty square.
Then look for a square whose row and column already hold all but one number.
With only four numbers, saying them out loud helps: "1, 2, 3, 4, which one is missing?"