Sudoku puzzle partially filled in in pencil

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Size: 5433px × 3622px
Photo credit: © Steve Porter / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: brain, concentrating, filled, filling, horizontal, newspaper, pencilling, practice, practicing, printed, puzzle, puzzler, puzzling, reading, relaxed, relaxing, retired, scribble, scribbling, senior, sudoku, training, write, writing, written