Indeed . It looks like about 688 tiles which is more than 12 sets (56 tiles). With the low number of tiles containing yellow it may be a few more than 12 sets. I repeat
Hi, you are right. 688 tiles part of 20.000 tiles we have for the WRTS (World Record Tantrix Spagetti) On 8 December we will lay down a figure with som text in it. When we have set the WRTS i will upload some new pictures. Have fun with palying it. :-)