![Looking for a great sudoku pen that can write small, not smudge, and still be legible. If anyone has any suggestion. I started doing these 25x25 sudoku puzzles and it's really hard Looking for a great sudoku pen that can write small, not smudge, and still be legible. If anyone has any suggestion. I started doing these 25x25 sudoku puzzles and it's really hard](https://i.redd.it/z24au4fqaok31.jpg)
Looking for a great sudoku pen that can write small, not smudge, and still be legible. If anyone has any suggestion. I started doing these 25x25 sudoku puzzles and it's really hard
Alphadoku - 25x25 Sudoku Puzzle To Print - Symmetric, Level Expert, No 4361 | PDF | Computational Complexity Theory | Puzzles
![Sudoku 25x25 50 Giant Medium Sudoku Puzzles | Jacob James Book | In-Stock - Buy Now | at Mighty Ape Australia Sudoku 25x25 50 Giant Medium Sudoku Puzzles | Jacob James Book | In-Stock - Buy Now | at Mighty Ape Australia](https://d3fa68hw0m2vcc.cloudfront.net/5f4/303340394.jpeg)