Guardian Sudoku puzzle requires buyers to purchase next issue for full solution
Readers seeking the answer to today's medium difficulty Sudoku must buy the following edition of the Guardian newspaper.

Puzzle rules and format
The grid contains numbers from one to nine. Every row, column and 3×3 box must hold each number exactly once. Players fill empty cells according to these standard constraints.
Solution availability details
Solutions for puzzles published Monday through Thursday appear in the Saturday or Monday edition. Friday and Saturday puzzles receive their answers in either Saturday's or Monday's paper. Buying the next issue is the only way to see the completed grid.
Reported by one outlet
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1 independent outlet. Headline as published. Links open the original report.