Scheduled for the end of April 2023. A beta version will be released soon.

Sudoku analysis and generation C# program. The only algorithm used is non-backtracking.
The algorithm used is

Single, LockedCandidate, (hidden)LockedSet(2D-7D), (Finned)(Franken/Mutant/Kraken)Fish(2D-7D), Skyscraper, EmptyRectangle, XY-Wing, W-Wing, RemotePair, XChain, XYChain, SueDeCoq, (Multi)Coloring, ALS-Wing, ALS-XZ, ALS-Chain, (ALS)DeathBlossom(Ext.), (Grouped)NiceLoop, ForceChain and GeneralLogic.
There are also functions for transposed transformation of Sudoku problems, standardization and ordering of Sudoku problems.

The algorithm is explained on the HTML page.
https://gidoo-code.github.io/Sudoku_Solver_Generator_v4/
https://gidoo-code.github.io/Sudoku_Solver_Generator_v4_jp/

You can change from the regular version to the simplified version. For consistency with the regular version, there are some unnecessary but unchanged parts.

(1) Remove "RegularVersion" from the conditional compilation symbol field.

(2) Exclude the source files in the folder with "nnEx" in the name from the project.
    - There are four folders to exclude. (00Ex,21Ex,23Ex,25Ex)
    - Exclude, not delete. So that it can be restored.
    - Exclude the files in the folder, not the folder.

(3) It can also be undone( Simple version -> Regular version ).   Do try!
    - Set "RegularVersion" to the conditional compilation symbol field.
    - Add files to the "nnEx" folders.
    - Don't forget to add both .xaml and .cs to 00Ex.