A book of Tri-doku puzzles has recently been published by Sterling Publishing. The book is available at Barnes and Noble and at online retailers as well (such as www.amazon.com).
For more information on the puzzle, visit www.tridoku.com
To see a news article about the puzzle (published by FloridaToday) please visit http://www.floridatoday.com/apps/pbcs.dll/article?AID=2008803090303
It's a pretty cool puzzle...check it out!
