Intarsia means using multiple colors. The Tunisian Intarsia Crochet is
a crochet technique where in Tunisian stitches are used with two or more
colors. It resembles knitting to a great extent. Take into consideration
that Tunisian stitches are longer than wide.
The pattern is worked from right to left. To work two squares in two
different colors. First make a simple crochet chain using the two
threads for the different colored boxes. Insert the hook into the the
second chain from the hook, draw a loop and leave it on the hook. Change
the color at the margin by twisting the thread to avoid holes.
To complete the stitch wind the yarn around the hook and draw it
through two loops. Repeat until there is only one loop of current color
left on the hook switch the color and finish in the same way. Repeat
these two rows to form the afghan stitch.