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Keen is a grid-based puzzle game where the player must fill a grid with numbers, so that each number appears once in every row and column. The grid is divided into regions, each marked with a number clue and an arithmetical operation. The numbers within every region must result in the given number clue when the operation is applied to them (for example, 9+ means that all numbers in the region should add up to 9). Different grid sizes can be chosen. A "multiplication only" mode is available in which there are no operations apart from multiplication.


Keen Browser Beginning of a puzzle
Keen Browser Puzzle completed
Keen Windows A game in progress
Keen Browser The puzzle in progress

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Related Web Sites

  • Keen (official website)
Contributed to by JudgeDeadd (26574)