Here is a freeware version of Soduko, which works on both Desktop PC and PPC. The same bsoduko.exe file will run on either platform.
http://www.pocketpcfreewares.com/en/...oft=1370#10166
See my comments (RD100) in the above link, about syncing files between Desktop and Pocket PC, so you can work on solving the same puzzle on either platform.
Here is the authors's website (French - English translated by google)
http://translate.google.com/translat...lr%3D%26sa%3DG