Is this the original puzzle for this date?
Yes. Daily archive URLs are generated directly from the published manifest.
Published daily archive
Sudoku edition 2026-07-31
This is the immutable Sudoku selected for 2026-07-31. Its ID is sudoku-0034.
The puzzle remains playable after its publication day, but only today’s completion can advance today’s streak.
Common questions
Does it have a unique solution?
Yes. The release pipeline verified exactly one solution before publishing it.