From Knitty.com: I put a lot of my favorite things in this pattern. The sock is constructed toe-up, but with a toe that picks up the purls from the stitch pattern. The gusset and heel flap (a la Baudelaire) give the extra room necessary to accommodate the biasing of the pattern. I used the pretty Eye of the Partridge heel to give an echo of the diagonals in the pattern stitch, and even the ribbing has a little bit of interest.
Note: The sock circumference should be approx. 1 inch smaller than the circumference of the foot on which it will be worn. The circumference may be adjusted by working the socks at a different gauge. A table in the Pattern Notes shows the gauges needed to achieve different circumferences.
ERRATA: smyrnastitch pointed out that the purl section yarnovers are more symmetrical if rows 1 and 5 are worked as (p1, yo, p2tog) instead of (p2tog, yo, p1) as written.