Click a cell, then enter a number (⌫ clear · ↶ undo · ↷ redo):
3 · Gameplay analysis
A Calcudoku-style puzzle — invented in 2004 by math teacher Tetsuya Miyamoto as a "teaching without teaching" tool. (His brand "KenKen" is trademarked; the puzzle type is generic.)
Self-contained · works offlineFERPA-clean by designVibe-coded, ownable