Kakura - Kakuro

A crossword built from sums. Fill each run with 1-9 so it adds up to its clue, with no repeats. Three sizes, unlimited puzzles.

Kakura is kakuro — a crossword where the answers are numbers.

Each shaded cell carries a clue: the lower-left number is the sum of the white run to its right, the upper-right number is the sum of the run below it. Fill every run with digits 1-9 so it adds up to its clue, never repeating a digit within the same run.

• Three sizes — 5x5, 6x6 and 7x7 playing areas • Every puzzle is generated fresh and verified to have exactly one solution • Your time is recorded, with the ten best times kept per size • Five mistakes end the puzzle — try the same one again or start a new one • Leave mid-puzzle and pick it up later, exactly where you left off • A built-in tutorial walks through a small grid step by step • Works fully offline

Quiet, unhurried, and solvable by reasoning alone.