Some technical background (if you're interested)

2024

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.

2025

For 2025 I decided to use the QQWing Sudoku generator written in C++ (https://qqwing.com/download.html).

I also added a copy of the puzzle at the bottom of the grid that you can copy and paste.

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LaBrocca
http://labrocca.com/

Copyright © 2025 by P.J. LaBrocca. All rights reserved. 'Pasquale's Pre-Penciled' is a trademark of P.J. LaBrocca.
January 19, 2025