Calcudoku

Sudoku's numbers meet arithmetic cages — fill the grid 1 to N and make every outlined cage hit its target.

How to play

Fill an N×N grid so each row and column contains the numbers 1 to N with no repeats. The grid is divided into outlined cages, each showing a target and an operation; the cells in a cage must combine with that operation to reach the target.

• Use 1–N once per row and once per column
• Make each cage's cells reach its target via its operation
• Single-cell cages simply equal their printed number
• Combine the Latin-square and cage rules to deduce each cell

Controls

• Desktop: click a cell and type a digit, or use the on-screen number pad
• Phone & tablet: tap a cell, then tap a number on the pad

Game modes

• Difficulty: easy, medium and hard grids
• Daily puzzle plus an endless practice mode

Tips & strategy

• Solve single-cell cages first — they're free givens
• For subtraction and division cages, list the small set of possible pairs
• Cross-check cage candidates against the row and column rule to eliminate options

About Calcudoku

Calcudoku is the arithmetic Latin-square logic puzzle, rebuilt as an original, solver-verified free browser game with multiple sizes, difficulties and a daily challenge.

A free, original browser game on PlayPendium — no download, no install. Browse all games →