A sudoku with little dashed boxes called cages, each with a target sum.
Why kids love it: Mixes sudoku rules with a bit of mental adding — feels like a treasure hunt for numbers that fit.
How to play: Fill the grid 1–9 like normal sudoku. Numbers in each cage must add up to the small total in its corner, and a number can't repeat inside a cage.
Play killer sudoku → Same 9×9 grid, but the regions are wiggly jigsaw shapes instead of neat 3×3 boxes.
Why kids love it: Looks different and tricks your eye, but the rules feel familiar.
How to play: Each row, column and jigsaw region needs every digit 1–9 exactly once.
Play jigsaw sudoku → A classic sudoku with two extra diagonal rules — both diagonals must also use 1–9.
Why kids love it: The diagonals open up brand new patterns kids love spotting.
How to play: Fill 1–9 so every row, column, 3×3 box and the two main diagonals all contain every number once.
Play X-sudoku → Sudoku with colours instead of numbers — perfect for younger kids.
Why kids love it: Bright and friendly. No reading needed — just spot the colour that's missing.
How to play: Fill the grid so each row, column and box has every colour exactly once.
Play color sudoku → Battleship Sudoku
Ages 9+ A mash-up of classic sudoku and battleship — a logic puzzle with little ships hiding in the grid.
Why kids love it: Two favourite puzzles in one. Lots of 'aha!' moments.
How to play: Use sudoku rules to place numbers, plus the row and column hints to figure out where the ships go.
Play battleship sudoku → Sudoku played on a round grid instead of a square one.
Why kids love it: Same logic in a totally new shape — a fresh challenge for kids who've cracked the classic.
How to play: Fill the rings and slices so every line uses each digit once. A great way to see sudoku with new eyes.
Play circle sudoku → A mini sudoku using just the digits 1–4.
Why kids love it: The perfect first puzzle. Quick wins keep little hands keen.
How to play: Fill rows, columns and 2×2 boxes with the digits 1–4. That’s it!
Play 4×4 sudoku → A friendly middle step between 4×4 and the classic 9×9.
Why kids love it: Big enough to feel grown-up, small enough to finish in a few minutes.
How to play: Fill rows, columns and 2×3 boxes with the digits 1–6.
Play 6×6 sudoku →