Sufuku

What is Sufuku?

Sufuku is a daily number puzzle that gives the Sudoku formula a twist: each number appears as many times as its value. A 1 appears once, a 2 appears twice, a 3 appears three times, and so on across the grid. Every puzzle is designed to have exactly one solution.

Editor takes

Sudoku with repeating numbers sounds chaotic, but the value-count constraint gives you a solid statistical handle on every row and column.

A neat twist that keeps the logic tight — each number's quota is a fair, exact rule, though the Monday-to-Sunday difficulty curve demands respect.

It's like Sudoku's sequel that actually earns its runtime — same puzzle DNA, but the repeating numbers are a twist I didn't see coming.

A daily puzzle that turns a 6x6 grid into a tiny world where each number travels its own path — like navigating a well-planned city grid.

How to play Sufuku

Fill the grid so that every row, column, and region contains the correct number of each digit, determined by that digit's value. Gold numbers are given as clues, and you add the remaining numbers. Placing a number that makes a digit appear more times than its value in a row, column, or region is counted as a mistake.

Tips & strategy

• Start with the 1s, since they appear only once per row, column, and region, making them the most constrained.
• Focus on rows, columns, or regions that are already nearly complete to reduce possible placements.
• Use the gold clue numbers as anchors and work outward through the grid.
• If placing a number would exceed its required count anywhere, backtrack rather than forcing it.
• Remember that each puzzle is built with a single solution, so avoid random guessing.

Frequently asked questions

Where to play

Play Sufukusufuku.com · free, new puzzle daily

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