This maplet "sudokuvisionF3" allows you to generate, solve, and play nxm region sudoku puzzles. It offers the ability to import grid lists in .csv, .sdm, and .sdk formats, load a grid in line format, and save grids in .txt and .csv formats for import on Android (Andoku3, OpenSudoku – the file must be re-saved as .sdm) and iOS (SmartSudoku, Good Sudoku). You can also save game grids (as numbers or colors) and their solutions as .gif images.

Two interfaces are available.

Multithreading is used to generate sudoku puzzles in parallel across multiple threads. Sequences are used for random number generation and the number of sudoku puzzles for each thread:
For example, [4521,7458] = s1 for random number generation and [2,2] = s2 for the number of sudoku puzzles. This generates s2[i] sudoku puzzles for the i-th thread, where is the random integer. s1[i].
The maplet is compatible with Maple 2021 and Maple 2025, but not with Maple 2015.

The second maplet, "sudokuvision2015b-monothread," uses only one CPU thread and is compatible with Maple 2015.

In sudokuvisionF3, the save->html_sud_save_for_qrcode_sharing option creates a .txt file of coded HTML grids, which can then be used to generate a QR code for each Sudoku puzzle.
This can be done using the "DRPU Barcode Label Maker" software: https://www.drpusoftware.com/drpusoft/barcode-maker.html
On Android, scan the QR code, copy and paste it into Quick Editor+, save it as an .html file, then open Google Files, navigate to the folder containing the HTML Sudoku file, and open it with an HTML viewer. The Sudoku grid will appear.
Then take a screenshot and open it in FP sdraw;OR After scanning the QR code, copy it into the app on Android: Code Editor https://play.google.com/store/apps/details?id=com.rhmsoft.code, then select HTML syntax, then run, take a screenshot, and open it in FP-Sdraw.

On iOS, paste the HTML code into the JSitor app, then run the code, take a screenshot, and import it into a drawing program (like Memopad).
On Windows, install the "HTML Playground" app from the Microsoft Store. Scan the QR code, then copy the HTML code into the app and click RUN.

Interface with cell selection and insertion via RadioButton for "sudokuvisionFradiobutton3"
Option to create HTML and PDF Sudoku books