Villiviini sock pattern was exclusive to the participants of Kierot Puikot 2015 knitting retreat until November 2015. Now it’s available for everyone as a free Ravelry download. Nov 19, 2015: A few typos were found in the first English version (ver1). They have been corrected in the ver2 that has just been uploaded in Ravelry.
Villiviini socks are knit cuff down applying technique called intarsia in the round (except for the cuff and toe which are knit in the round in a basic manner). The technique is described in detail in the instructions. Instructions are provided for 60, 66 and 72 stitches.