CSP Applet that you can play with..

Try
http://www.cs.ubc.ca/labs/lci/CIspace/Version4/Constraint/index.html

for a java applet that allows you to specify CSPs and solve them.

(The link http://www.cs.ubc.ca/labs/lci/CIspace/index.html  also has a variety of applets for search, logic etc etc that you may enjoy)

Rao