Keen

Game Rules: Fill in the grid with digits from 1 to the grid size, so that every digit appears exactly once in each row and column, and so that all the arithmetic clues are satisfied (i.e. the clue number in each thick box should be possible to construct from the digits in the box using the specified arithmetic operation). To place a number, click in a square to select it, then type the number on the keyboard.

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Game Controls

Game Information

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Shortcuts: Ctrl+S(Save) | Ctrl+O(Load)

Game Rules: Keen

Play Keen online for free. Solve a KenKen-style arithmetic Latin square with cages, operations and logic.

Also known as: KenKen / Calcudoku

Why play this puzzle

Keen focuses on solving arithmetic cages inside a Latin-square grid, often searched as KenKen / Calcudoku. It works well as a quick logic exercise, but also has enough depth for longer solving sessions with fresh generated boards.

The best way to solve this Number Games puzzle is to lean on arithmetic reasoning: confirm forced moves first, reduce the remaining possibilities, and let the full solution emerge step by step.

Fill in the grid with digits from 1 to the grid size, so that every digit appears exactly once in each row and column, and so that all the arithmetic clues are satisfied (i.e. the clue number in each thick box should be possible to construct from the digits in the box using the specified arithmetic operation). To place a number, click in a square to select it, then type the number on the keyboard.