You use the emulated DOS version with other algorithms. It's not the "real" Windows version released later for Windows 95. This version was made for systems like Windows 3.x. Windows 3.x is a graphical personal computer operating environment developed by Microsoft for the MS-DOS systems. It runs as a graphical, 16-bit multi-tasking shell on top of an existing MS-DOS installation.

This two "Windows" versions have other algorithms for computer players, and I can't make one category for them, but now we have other categories for versions released on Windows (95+), Windows 3.x and MS-DOS, then now you can submit your MS-DOS runs too :).

The latest patch: https://original-war.net/articles.php?a=the_latest_patch&lang=en-gb