105 Samurai Sudoku Puzzles Easy To Hard Volume 25: Fill In Puzzles Book 105 Easy To Hard Samurai Sudoku Logic Puzzles For Adults, Seniors And Sudoku lovers Fresh, fun, and easy-to-read (Paperback) -
File:25by25sudoku.png - Wikipedia
25 x 25 Suduko Puzzles: 75 Easy, Medium and Hard Sudoku Puzzles - Fry, Charlie: 9781523438945 - AbeBooks
Sudoku Solution (5/25/22) - Flagpole
Alphadoku image example, 25X25 sudoku puzzle, symmetric, beginner No. 1