Now that you mention it I also have his 3rd roll quiz in my database:
and the nice thing about trying these in my database is that your score is recorded and when you take it again some time later you can check if you have made any progress or not:
You can also go back and check how you scored in a particular challenge:
and you can also click on each test and check each position.
Even more sweet would have been challenges where each problem has a good explanation but that would require a lot more knowledge about backgammon than I have. Copyright prevents me from reproducing anything found in books or other sources. But perhaps one day I will have a lot of users and I can afford to pay some of the Giants to come up with cool challenges with great explanations! :-)
TP