I'm happy to announce that the code for Microsoft Sudoku for the Tablet PC and Ultra-Mobile PC is now available for download at:
http://www.microsoft.com/downloads/details.aspx?FamilyID=C0461E1A-BD6A-4B21-A199-D3D4F9D79CF7

Note that the download includes the compiled app, so you can download and start playing right now.

The article I wrote to accompany the code should be available online shortly. I'll post again when it's online.

Enjoy!!