Visual primer for first-time solvers
KenKen,
shown not told.
Arithmetic logic puzzle
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Live demonstrationStep 01 / 07
Goal: fill every cell with 1–4 such that row/column digits are unique and cage arithmetic is satisfied.
Step01—Meet the board
This is KenKen.
A 4×4 grid divided by thick borders into cages. Each cage has a target number and an arithmetic operation. Fill digits 1–4 so each row and column contains each digit exactly once.
Rules in play
No digit repeats in any row or column
Cage digits combine via operation to equal target
Logic only — no guessing required
3
Digit (1–4)
Fill each cell with digits 1 to 4. No repeats in rows or columns.
8×
Cage target
Thick border encloses a cage. Digits in the cage must combine (using the operation) to hit the target.
+ − ×
Operations
Addition, subtraction, multiplication, division. Use the order given (left to right for − and ÷).