I spoke too soon, while this appeared to work initially, a later update
suggested upgrading to the 'lucid' version.
Sorry!
Michael
--
ksudoku is too easy in the hardest level (lucid)
https://bugs.launchpad.net/bugs/598012
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Bug
Here's a work-around, if anyone is interested. (All as root (sudo -s).)
Remove the 'lucid' version:
aptitude remove ksudoku
Add 'karmic' to your sources, by adding a line similar to the following
to /etc/apt/sources.list:
deb http://archive.ubuntu.com/ubuntu/ karmic main restricted
Tell the p