Play Renban Sudoku Online Free

Play Renban Sudoku online for free. Digits on purple Renban lines form a set of consecutive digits in any order. Classic Sudoku rules apply.

▶ Play Renban Sudoku — Free
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How to Play Renban Sudoku

  1. Standard Sudoku rules apply.
  2. Purple Renban lines contain a set of consecutive digits (in any order).
  3. A 4-cell Renban could contain {2,3,4,5} or {5,6,7,8} etc.
  4. No digit repeats on a Renban line.
💡 Pro Tip
A Renban of length N has only 10−N possible sets. A 5-cell Renban has just 5 possible sets: {1-5}, {2-6}, {3-7}, {4-8}, {5-9}.

Frequently Asked Questions

Can a Renban line contain digits in any order?

Yes — the line just has to contain a set of consecutive digits. The order along the line doesn't matter.

What's the longest possible Renban line?

9 cells, which would have to be the full set {1,2,3,4,5,6,7,8,9}. Any longer would be impossible.

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▶ Play Renban Sudoku