Some technical background (if you're interested)

I use software developed in C/C++ by Vaibhav Thakkar to generate the Sudoku puzzles, solutions and ratings used in Pasquale's Pre-Penciled Sudoku Grids. Thank you Vaibhav Thakkar. (Copyright (c) 2018 Vaibhav Thakkar. https://github.com/vaithak/Sudoku-Generator/blob/master/LICENSE)

I modified the C/C++ to generate GhostScript data files containing puzzles, ratings and solutions. These are then consumed by a GhostScript program that produces an image of the Pre-Penciled grid and the final PDF.

I wrote programs in C/C++ and GhostScript to calculate the candidate lists.

I have no clue about Pasquale.

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LaBrocca
http://labrocca.com/
Copyright © 2024 by P.J. LaBrocca. All rights reserved. 'Pasquale's Pre-Penciled' is a trademark of P.J. LaBrocca.
April 1, 2024