In 1996 Tux was created, for Linux, by Larry Ewing. In 2003 Nicolas Rougier created a Baby Tux. In 2011, we created Illusion Baby Tux, based on Rougier's drawing.
Baby Tux is an illusion that is viewed from the bottom so that it can be used on a baby blanket. The finished blanket is approximately 81 cm x 104 cm (32" x 44") when knitted in DK yarn. You can use any yarn you want though this may change the overall size of the blanket.
Illusion knitting (which is sometimes called shadow knitting) is very easy to do. You knit two rows in one yarn then two rows in the other yarn, just like knitting normal stripes.
The illusion penguin is only there when you look at the blanket from an angle. When you look straight at the knitting you will see stripes and just the faintest shadow of a penguin.
The pattern includes information to help you understand how illusion knitting works. It has charts in various sizes, including one specially for tablet use, so you can use whichever you find most convenient.