I received the Penguin email blast today about ColorSync. When I saw the name David Jonathan, it’s
an instant purchase for me. I obviously haven’t received the cards yet, but I watched the tutorial.
What a great method! He solved every 5x5 issue I’ve ever had. Whether it’s the one behind principle
with markings, or something else, David solved the riddle. It’s awesome and it was a no brainer when
I saw his name, but it’s even more of a no brainer after watching the tutorial. I can’t wait to
receive this! Thanks to David Jonathan and Penguin, for another monster creation that will get
plenty of use!!!