KenKen

KenKen is a free calcudoku-style math logic puzzle in your browser. Fill Latin squares so every row, column, and cage satisfies its +, −, ×, or ÷ clue. Daily boards, pencil marks, undo, hints, and autosave included.

Also known as: calcudoku, mathdoku, math cage puzzle

Play KenKen free online in your browser — math cage puzzles with daily boards, pencil marks, undo, hints, and autosave.

How to play KenKen

  1. Daily is on by default; Classic uses ?daily=0 with Easy 4×4, Medium 5×5, or Hard 6×6.
  2. Tap a cell, then a digit (pad or keyboard). Tap the same digit again to clear. Pencil notes do not count as moves.
  3. Thick borders mark cages; the clue sits on the cage’s first cell. Conflicts in rows, columns, or cages highlight immediately.
  4. Undo pops the last action. Reset restores the opening board. Three hints fill a forced cell each.
  5. Progress autosaves per puzzle id until you win or reset; a new UTC day does not resume yesterday’s daily save.

Rank by committed digits plus hints used, then time (lower is better). Undo removes a counted digit. Daily and Classic each store one best on this device; daily streaks count consecutive wins.

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