What is Level 12 in Sudoku?

Level 12 puzzles have 25 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 12 puzzles on 2025-06-09.

This leaderboard shows the top 50 players who solved Level 12 Sudoku puzzles with 25 clues the fastest on 2025-06-09.

Level 12 is part of Sudoku99’s structured difficulty progression, where lower clue counts mean greater challenge.

Rank	Nickname	Country	Time	Puzzle
1	Guest #27662		00:09:45	#406044
2	Guest #27659		00:15:58	#83379

What does Level 12 mean?: It corresponds to puzzles with 25 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.