Kakurel: Cross Sums

Every crossing adds up. Kakurel is an original, offline number crossword with 120 uniquely solvable boards. Fill each white run with different digits from 1 to 9 so it adds up to its diagonal clue. Underlined starter digits are printed anchors: use them in both crossing sums. A complete puzzle collection • Five volumes, from compact 7×7 boards to 11×11 Grand crossings. • The first four volumes are available immediately. Eight distinct clears earn the Grand volume; assisted clears count too. • Each board has been independently checked for a single solution with its printed digits. Tools for careful thinking • Ink and pencil entry, erase, Undo and Redo. • See the across and down combinations for your selected crossing. • Optional hints explain a narrowed digit or explicitly label a checked search continuation. • Check highlights impossible runs. Computed notes and hints mark an assisted attempt. • Practise distinct-digit sums in the Combination lab. Your own pace • Unfinished boards, notes, progress and preferences save on this device. • Keep your latest 80 clear records, with up to 2,000 recent entry and tool actions per attempt. • Share a named JSON record through your device's share sheet. This is a record export, not a backup or import. • Today's crossing selects a board from the included collection using the UTC date. • Optional active solving time, quiet original music and separate sound controls. • An adaptive tablet workspace places the grid beside crossing combinations and the keypad. One upfront purchase. No advertising, in-app purchases, subscriptions, accounts or analytics. English interface. Offline play; support and privacy links open your browser. Local progress is removed when you reset or uninstall.

120 original offline number crosswords. Pencil notes, explained hints, saved boards and earned Grand crossings. One purchase, no ads or in-app purchases.