We had five joint winners (I know, cop out- that'll teach me to set proper winning criteria) out of six entries. Congrats to Manfred, Lucas, Chris, Zufolek and Peter. The variety of the entries was also interesting; it's the first time we've had a WPF and an OpenGL entry. You can see the source code for the entries on the challenge page.
It's been a while since I last did a review but a new book on C# threading review of C# 2008 and 2005 Threaded Programming was too good to miss and it didn't disappoint me.
- Link to Programming Challenge Twenty Two Generate Hexagons
- Link to Programming Challenge Twenty Three Reassemble a number grid

Awesome. Congo rats to all.