Unlock the Secrets of Pyruko Author:Jack Lyons You've played Sudoku. Now try Pyruko! The same great logic challenge only with a twist - a whole new dimension. That's right! You now have the first and only puzzle that can be folded into a pyramid to see the solution. Pyruko is an exciting and fun logic puzzle that requires absolutely no math skills. All you need is patience, a... more » little bit of logic, a good imagination, a pencil, and you'll be off puzzling for hours of enjoyment. You don't need to be a brain surgeon to solve it. This collection of puzzles, the first of its kind, will keep you coming back for more.« less