"I like the pictures - it makes it more tricky" Kyra, Age 8.
The pictures make it harder, and you need patience to work it out. I like level 2 best, and am working up to L3.

"Sudoku is a great game. iKondoku turns it into an aesthetic experience." - J Hubert, Hubert Designs
As a mental exercise: I like the idea that I'm using different schemes for differentiating the game elements: Color, Shape, Pattern. My favorite is the Zen iKon set. Make sure you experiment with the background color. It can make a
dramatic difference in the look and feel of a game.

"Very tough!" - Richard Joffray, Sudoku Master & Technosigner (www.technosigner.com)
I find the process of elimination using iKons is not as possible with iKons, however the visual benefit of iKons brings a new perspective for spotting the initial pass. Then I switch to numbers to go further.

"It's everything I'd hoped." - TC Vollum, creator of The Adventures of Ellen and Pink (www.dolltales.com)
I wouldn't consider playing with anything but the Chinese set, at the moment. They are like little magic gems. Gorgeous. The mixture of color and pattern is very nice. The pure color ones are pretty but the whole "Ikon" thing got me thinking shapes pretty early and the Chinese set is the most iKonic, for my taste. Thanks for the fun.