Greater Than Sudoku
Sudoku with greater-than and less-than signs between some neighbouring cells, and fewer starting digits.
- Logic
- New puzzle every day
- Free, plays in your browser
- Mouse, touch or keyboard
- Added 29 October 2026
- #sudoku
- #inequality
- #numberpuzzle
- #dailypuzzle
- #logic
- #relaxing
Greater Than Sudoku
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A real run of the game, recorded with captions and no sound.
How to play
- Fill the grid so every row, column and 3 by 3 box holds 1 to 9 once.
- In this variant, a sign between two cells shows which is smaller, for example < means the left digit is smaller than the right one, and ∧ means the upper digit is smaller.
- Tap a cell, then a number. Notes mode lets you pencil in candidates. Conflicts show in red as you play.
- Pick Daily for today's puzzle, the same for everyone, or Easy and Hard for fresh ones. Your time is saved when you finish.
Controls: mouse, touch or keyboard. Made by CalcoTools.
Tips and strategy
- A cell with a sign pointing away from it on all sides must be the smallest of its neighbours.
- Chains of signs fix the order of several cells. A cell at the end of a long chain is a 1 or a 9.
- Combine signs with the rows and columns: a 1 or 9 cannot repeat in its line.
- Mark candidates with notes and cross off any that break a sign.
FAQ
- How do I read a sign?
- It points to the smaller digit. < between two cells means the left one is smaller. ∧ and ∨ between cells above one another mean the upper one is smaller or larger.
- Why are there fewer given digits?
- The signs give you extra information, so the puzzle needs fewer starting numbers.
- Is the daily the same for everyone?
- Yes, on the same UTC day.
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