Kakuro Puzzle

Kakuro Puzzle is a free browser-based platform for playing Kakuro, the number crossword logic puzzle, with a playable board that lets you solve regular levels, dated daily puzzles, and reproducible unlimited practice grids.

What is Kakuro Puzzle?

Kakuro Puzzle is an online Kakuro game platform that turns the classic number crossword into an interactive web app. It takes a Kakuro grid with black clue cells that show across and down sums as input, and produces a solved board when you fill every white cell with a digit from 1 to 9 so that each run matches its clue without repeating digits. The game runs entirely in the browser, requires no account to start, and offers a built-in puzzle library with 200 numbered regular levels, five daily puzzles per UTC date, and unlimited mode that maps size, difficulty, and seed inputs to verified puzzles.

Key Features

Kakuro Puzzle distinguishes itself with a clean playable interface and several practical solving aids.

• Playable board — Tap any white cell and enter digits 1-9 with an on-screen number pad; the board accepts standard Kakuro entries.
• Notes mode — Mark candidate digits in cells while comparing across and down runs.
• Check without punishment — Use the Check button to reveal conflicts in sums or repeated digits without affecting score.
• Regular levels — 200 numbered puzzles organized for structured practice from easy to harder.
• Daily Kakuro — Five puzzles per UTC date with stable dated URLs for a fresh daily routine.
• Unlimited mode — Choose size, difficulty, and seed to deterministically generate a verified puzzle from the library.
• Undo, hint, and reset — Standard solving aids available on every board.
• No forced sign-in — Start as a guest; optional Google sign-in later for saving progress, best times, and daily wins.

Who is it for?

Kakuro Puzzle serves a range of solvers, from first-timers to experienced number-logic fans.

• Beginners learning Kakuro rules: they can start with short-run clues and use Check to see mistakes without penalty.
• Puzzle enthusiasts who want a daily routine: they can open the daily puzzle URL each day and solve five new grids.
• Sudoku players curious about number crosswords: they can practice the sum-based logic and compare it to Sudoku via the guides.
• Students and brain-training users: they can use regular levels to build addition and combination reasoning skills.

What can you do with Kakuro Puzzle?

You can play, practice, and create reproducible Kakuro puzzles entirely in the browser.

• Play for free instantly — Open the site, choose a level, and start solving without creating an account.
• Practice with structured levels — Work through the 200 regular puzzles to build from easy to more difficult combinations.
• Solve a daily challenge — Visit a dated daily URL to get a fixed set of Kakuro puzzles that match a specific UTC date.
• Create a reproducible practice grid — Enter a size, difficulty, and seed in unlimited mode to revisit the same verified puzzle later or share it.

How does Kakuro Puzzle work?

The workflow is straightforward: pick a cell, enter a digit, and verify against clues. Select a white cell and enter a digit from 1 to 9. Each across run must add to the clue in the lower-left triangle of its starting black cell, and each down run must add to the upper-right triangle clue. The board tracks your entries, notes, and check results. Use Check to show conflicts, Hint for assistance, and Reset to clear the grid.

FAQ

Is Kakuro Puzzle free?

Yes, all modes are free to play in the browser. No account is needed to start solving, and there is no paid tier listed.

Do I need to sign in to play?

No. You can play as a guest immediately. Optional Google sign-in is present for saving progress, best times, and daily wins, but it requires production OAuth configuration to be active.

What are the rule differences from Sudoku?

Kakuro uses clue sums and no-repeat runs instead of rows, columns, and boxes. Each white cell must satisfy both an across and a down sum, and no digit can repeat within a single run.

How many daily puzzles are there?

Five per UTC date. Each daily puzzle has a stable dated URL, so you can bookmark or share it.

Can I generate my own Kakuro puzzle?

Unlimited mode lets you choose size, difficulty, and seed. The site maps those inputs deterministically to a verified puzzle from its library, so the same seed always produces the same board.