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Daily Sudoku

Solve a random Easy - Medium - Hard Japanese-type logic puzzle chosen from today's collection.

July 19, 2018 - Hard

Auto-pencil marks

Show a pinned square

Show errors in red

Show duplicates

Alternative highlights

Warn when leaving page

Pencil Marks:
Simply enter multiple digits.

Today's Sudoku Puzzles

Notes

• Help
Read the help page on Sudoku puzzles for a more detailed explanation.

• Keyboard Usage [only when your cursor is in the grid]
Note: not all options work on all browsers.
Ctrl + Arrows = move around the grid.
a = auto-pencil marks.
p = show a pinned square.
Shift + # = show squares with a <#>.

• Uniqueness
Each puzzle has exactly one solution, which can be found using logic alone and no guesses are ever required. If you think you've found another solution, then please double check the rules.

Print Sudoku

• Print Size?

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• Current/Starting Grid?

Current grid
Starting grid

• Pencil Marks?

With pencil marks
Without pencil marks

Note: if there are no pencil marks on the current grid the system will prompt you to run an auto-pencil marks, remember that this may solve a few squares as numbers are eliminated. Pencil marks will not be printed it you've selected the starting grid.

Unique Reference = [Sudoku-20180719-Hard-243033]