Giant Sudoku Puzzles: With solutions: 25X25 Puzzle Grid: Combined Alphabet letters A to P and Numbers 1 to 9 (Large Print / Paperback) | Klindt's Booksellers and Stationers
Alphadoku image example, 25X25 sudoku puzzle, asymmetric, expert No. 10000.
25 x 25 Large Sudoku Solving Hints
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Sudoku 25x25 Vol III : Volume III by Sanket Sarang
[Download] Sudoku 25 (AKA 25 x 25) - QooApp Game Store