Kakuro Grid: Cross Sums

Kakuro without guessing. Every puzzle in Kakuro Grid is proved to have exactly one solution and is solved end to end by the same logic engine that powers the hint button, before you ever see it. Cross sums, number crossword, kakkuro: the same puzzle, one fair app.

WHY IT IS DIFFERENT • Verified, no guessing — every board has exactly one solution and can be finished by logic alone; the board says so • Hints that explain — the next step names the technique, marks the cells and says why, instead of handing you a digit • Mistake check in three tiers — a quiet indicator, the cells involved, or the rule you broke; each tier is your choice • Notes like on paper — candidates behave the way they do on the page, unlimited undo and redo, and a bookmark to try a branch and jump back • Combination helper — tap a clue and see every digit set for that length and sum, complete and never cut off • A calm board — no coins, no lives, no pop-ups. Every helper is optional; Paper mode turns them all off

HOW TO PLAY • Fill every white cell with 1 to 9 so that each run adds up to its clue and no digit repeats within a run • 6×6 to 12×12 in four bands from Easy to Expert — a quick round or a long evening • Classic — pick a size and a band; the boards never run out • Journey — endless levels that grow with you; the first three teach the game by playing it • Daily — the same puzzle for everyone, with a streak and a calendar archive

PROGRESS THAT STAYS XP and levels, a best time for every size, solve counts and averages, Game Center leaderboards and achievements. Every move is saved; the app reopens on the puzzle you left.

FAIR ABOUT ADS Free, funded by an ad after a puzzle — never during one, never on resume, never over the keypad. One purchase removes every ad for good and makes hints and checks unlimited.

Plays offline. No account. Eight languages.

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