One fixed puzzle moment
One killer a day is exactly enough for a pleasant coffee-time ritual — and with the sums you train logic and mental arithmetic at once.
Daily Killer Sudoku
Every day at midnight a new medium-level killer sudoku appears here — the same for everyone. Solve it, build your streak and come back tomorrow for the next one.
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Why a killer every day?
The same for everyone
Today's puzzle is identical worldwide. Play along with family or friends and compare who solves it fastest.
A streak of its own
Your killer streak is separate from your regular sudoku streak. Two daily habits, two records to defend.
New to this variant? First read how killer sudoku works, or play the classic Daily Sudoku alongside it.
Frequently asked questions about the daily killer
When does the new puzzle appear?
Every day at midnight (your local time). The puzzle is derived from the date, so everyone gets the same one.
Does my regular sudoku streak count here?
No, the killer has its own streak and its own record. That way you can see exactly how you do in each variant.
What level is the daily killer?
Medium: some starting digits plus the cage sums. Challenging enough to keep you sharp without taking an hour.
Is my progress saved?
Yes, on your own device — no account needed. Your streak, best streak and today's time are stored locally.