What is Level 13 in Sudoku?

Level 13 puzzles have 24 given clues. The fewer the clues, the harder the puzzle.

How is the ranking calculated?

Players are ranked based on the fastest completion time for Level 13 puzzles on 2025-06-09.

This leaderboard shows the top 50 players who solved Level 13 Sudoku puzzles with 24 clues the fastest on 2025-06-09.

Level 13 is part of Sudoku99’s structured difficulty progression, where lower clue counts mean greater challenge.

Rank	Nickname	Time	Puzzle
1	Guest #27662	00:04:35	#642311
2	Guest #27662	00:05:25	#781164
3	Guest #27663	00:06:23	#884526
4	Guest #27668	00:06:33	#0673801
5	Guest #27667	00:07:51	#532086

What does Level 13 mean?: It corresponds to puzzles with 24 clues. Fewer clues means higher difficulty.
How often is this ranking updated?: Every day. Rankings reset daily and show results for the current date.
Can I appear without logging in?: Yes. You can still appear in the leaderboard as a guest player.