Sudoku
↗Clear your head and fill the grid. Every row, column and box needs all nine numbers.
Solo
Calcudoku✦
Numbers, cages and a little arithmetic. Complete a tiny Latin-square challenge.
How to play CalcudokuStep-by-step · Controls · Rules
Your goalFill each row and column with 1–4 while meeting every cage target.
- Find the letter in each cell and match it to the cage legend below the grid.
- Fill blank cells without repeating a digit in any row or column.
- Make the values in each cage reach its listed addition or multiplication target, then choose Check puzzle.
ControlsTap blank cells to enter whole digits 1–4. Read the cage-letter legend beneath the board.
Rules & scoringA single-cell cage fixes its value. Given digits cannot change. This starter variant uses addition, multiplication and single-cell cages.
Choose New game to restart. Your active board resets on refresh.
Setting up your next round…
Make it your kind of break.
Use the controls above to start a fresh round. Your device handles the game; no account, payment or download is needed. Rules and supported modes are shown in the game itself.
Progress rewards belong to this browser. Closing or refreshing a page starts a fresh game unless a game explicitly offers a saved state.
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