This is a Windows-based Sudoku game that features advanced techniques for easier gameplay, including color marking and a specific candidate number control method.

One of the best features of Sudoku 9981 is the help it provides when you get stuck. The program automatically generates potential number notes, solving the puzzle for you with ease, and highlighting where you went wrong while still allowing you to learn as you play. The software also includes the function of displaying Singles Candidature, which makes it easier to identify and eliminate choices as you work through the puzzle.
Sudoku 9981 boasts the most challenging puzzles to give you a thrilling experience. As you progress in difficulty, the game gets more complicated, pushing your limits and making for an exhilarating challenge.
To make things even better, Sudoku 9981 also allows you to save the puzzles you create as image files, so you can revisit them later or even share them with friends. Overall, Sudoku 9981 is an excellent software for anyone looking to challenge themselves with Sudoku puzzles. Whether you're a complete beginner or an experienced player, Sudoku 9981 has everything you need to have fun and improve your skills.
Version 5.01: Add follow function:Save sudoku as a picture file.Step by step solve sudoku.