Daily Archive

Daily Killer Sudoku for 2026-05-21

Prototype Puzzle. Visit this page to explore the challenge summary, difficulty, and Top 10 preview for this date without exposing the solution.

This is a past daily challenge.

Difficulty

medium

Challenge date

2026-05-21 UTC

Summary

Top 10 Daily Race

Puzzle overview

This puzzle includes 33 cages and follows the same no-repeat cage, row, column, and 3x3 box rules as the live daily challenge.

Top 10 Preview

🥇Ari
05:48
🥈Lena
06:41
🥉Bo
07:43

All Finishers Preview

#1Ari
05:48
#2Lena
06:41
#3Bo
07:43

3 finishers recorded for this date.

Play today’s challengeKiller Sudoku RulesCage Combination CalculatorHow to Play

Learn More

Explore More

Play Today’s Killer SudokuKiller Sudoku RulesHow to PlayBeginner TipsCage CombinationsCage CalculatorThe 45 Rule