Kakura - Kakuro

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

Each shaded cell carries a clue: the right-pointing number is the sum of the white run beside it, the down-pointing 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 — 5×5, 6×6 and 7×7 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.