YAOKU

YAOKU — number and logic puzzles

FREE PLAY

PREPARING YOUR PUZZLE
00:00

Generating your puzzle…

Preparing the starting clues and Loose Cards.

Loose Cards

— left
Given Product badge0 / 24 connected

Select a white cell, then choose a card.

Daily details & reset time
More puzzle options
A fresh puzzle using the same sum and product rules.
About YAOKU & your saved game

Fill the white cells with digits 1–9. Each digit must fit its crossing sum clues, neighboring product badges, and the available Loose Cards.

All three ways to play are free: choose one of 1,000 numbered Collection puzzles, generate a fresh board with Random Free Play, or try the Daily selection. Difficulty labels are estimates.

The Daily server selects a fixed Collection puzzle for the calendar date in America/Chicago and shows that date above the board. Reset is midnight America/Chicago; the next reset is displayed in your local timezone. A connection is required to open the current Daily. The same date gives the same selection. Daily and its numbered puzzle share saved progress; sharing sends the exact numbered puzzle, regardless of the recipient’s date. A new selection is available automatically each day; a puzzle already in progress will not reset at midnight.

Entries, notes, and progress stay in this browser on this device; they do not automatically sync across devices. No player account is needed. YAOKU is for ages 13 and older.

Rules & examples · All 1,000 puzzles

Rules & examplesContactPrivacyTerms

Always free. Your progress stays in this browser.

How to play

Fill the white squares with digits from the Loose Cards. Use addition and multiplication together to find each number.

3 + 5 = 8
5 × 6 = 30
Tools, keyboard & saving

Undo reverses a move. Erase returns a card. Notes record possibilities without using cards. Check marks entries that differ from the solution. Hint fills an eligible cell; hinted games are excluded from best times.

Use 1–9, arrow keys, Backspace/Delete, N for Notes, and Ctrl/⌘ Z for Undo. Pause and Restart are in the game screen and puzzle options. Progress stays in this browser; it does not sync across devices.

Daily resets at midnight America/Chicago, including daylight-saving changes. An in-progress board is kept at reset.

Full rules & illustrated examples →

SAVED IN THIS BROWSER

Statistics

Completion insights & record details

Recorded completion insights

One first recorded completion per puzzle, including completed saved games with timing data. Averages include hinted games; best times exclude hints. Older totals may have no timing record. These are local personal records, not competitive rankings.

Saved only in this browser on this device; not automatically synchronized. Best times exclude games using hints. Published totals reflect the collection loaded here.

SHARE A PUZZLE

Share this puzzle

Recipients will start the same puzzle from the beginning, with the same givens—your entries and notes won’t be shared.

Preparing your puzzle link…

Start a new puzzle?

Your current puzzle will be replaced.

Puzzle complete

Settings

Saved only in this browser.

Light / dark appearance
Gameplay & accessibility

Competition

Local gameplay data

Your progress is saved in this browser. Clearing website data may permanently remove your saved puzzles and personal records. There is no automatic cross-device sync.

Clears saved games, notes, personal statistics and preferences only. It does not delete server-side results, leaderboard credentials, or the analytics queue. Public leaderboard participation and Daily Rivals remain unavailable pending review. For server-data questions, use the privacy contact.

Clear local gameplay data?

This removes saved puzzles, notes, personal records and preferences from this browser. It cannot be undone. Server-side results are not deleted, and any existing leaderboard credentials are kept.

Global Daily leaderboard