I found that one of my favorite program sudoku is no longer available after uninstalled the OE version 1 and installed the OE2.

where can i download the sudoku ?

Thanks

Sudoku is installed as a component of the Origami Experience Pack (version 1). Since you uninstalled the pack, Sudoku would disappear as well

I have both OE's installed on my Q1P and am able to access Sudoku. Also, there's no problem having them both installed.

I don't know which particular Sudoku game you're referring to but there's one developed for UMPCs and tablets at this Microsoft page:

http://www.microsoft.com/downloads/details.aspx?familyid=c0461e1a-bd6a-4b21-a199-d3d4f9d79cf7&displaylang=en

 

You get a load of stuff with this download, but the game is in the 'bin' folder, and is Sudoku.exe. It runs from wherever you place it, but you can easily put a shortcut into the Games folder in the Programs menu.