Guardian Sudoku puzzle requires buyers to purchase next issue for full solution
The Guardian published a new Sudoku puzzle on Friday that readers must buy the following Saturday or Monday edition to see the completed grid.

Puzzle rules and layout
Players must fill the grid so that every row contains the numbers 1 to 9. Each column and every 3×3 box must also contain these specific digits without repetition. The puzzle is designed for expert-level solvers who can handle high difficulty ratings.
Solution availability details
Solutions to Friday and Saturday puzzles are provided in either Saturday's or Monday's edition of the newspaper. Readers looking for answers to Thursday puzzles must wait until the next available issue. Buying the next issue is the only way to view the completed puzzle.
Publication schedule notes
Puzzles published on Monday through Thursday have their solutions released in the subsequent weekend edition. Friday and Saturday puzzles follow a different release pattern that shifts the answer key forward by two days. This schedule ensures fresh content appears regularly for subscribers throughout the week.
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