Keen
Simon Tatham
Plays on mobile
Similar games
Fill the grid so that every row and column contains each digit exactly once. Each heavily outlined cage shows a target number and an operation, and the digits inside must combine to reach it.
Mixing addition, subtraction, multiplication and division with pure logic, it is a fun workout for the mind.
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Step 1: Select a square and type a digit on the keyboard or the on-screen keypad; Erase or Backspace clears it.
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Step 2: Right-click (long press on touch) lets you note candidate digits.
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Step 3: Change the grid size and difficulty from the Type menu.
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Step 4: On touch screens a tap acts as a left click, a long press as a right click and a drag as a mouse drag.
- Keyboard
- Mouse
- Touch
Keyboard
- Bksp Other keys
Mouse
- Right click
Touch screen
- Tap
Once the game starts, its controls are also shown on screen.
Full instructions
Select a square and type a digit on the keyboard or the on-screen keypad; Erase or Backspace clears it. Right-click (long press on touch) lets you note candidate digits. Change the grid size and difficulty from the Type menu. On touch screens a tap acts as a left click, a long press as a right click and a drag as a mouse drag.
Credits and license
- Developer
- Simon Tatham
- License
- MIT
- Source
- chiark.greenend.org.uk/~sgtatham/puzzles/
- Attribution
- Keen is part of Simon Tatham's Portable Puzzle Collection, copyright 2004-2024 Simon Tatham and contributors (MIT licence, full text in LICENCE).
This game is hosted under the terms of its license.
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