PIXEL UP! › Brain Teasers › Cage Calculus
Cage Calculus
Fill the grid so every row and column holds each number once — and every outlined cage hits its target with its operation. Five generated puzzles, each with exactly one answer, from 4×4 up to 6×6.
Brain TeasersMathLogicPuzzleFreeNo signup
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How to play
Click a cell then a number · or arrows + 1–6 · Backspace / 0 clears
Works with a keyboard on desktop and with taps or swipes on a phone.
About Cage Calculus
Cage Calculus is a free brain teasers game on PIXEL UP!, a comic + anime browser arcade of hand-built games. It runs right in this tab — nothing to install, no account needed. Your best score and play count are kept in your own browser.