This pattern uses just one crochet stitch - Treble Crochet (this is called a Double Crochet in the US). It's an incredibly simple but very effective mixed stripe using two rows of crochet for each colour. The simplicity of it.
Checkerboard Textures Throw ~ CAL by Red Heart, starting January Ten textured squares & ten granny squares, plus the border. 13 skeins RH Soft light grey heather, hooks size G (granny squares) and F (other squares). New block pattern every 2 wks