A combination of vertical and horizontal cylinder boards, used for Fairy Problem, so that not only do the a- and h-files adjoin, but also the 1st and 8th rank, and the board has no edges at all. It is sometime diagrammed without edges.
ECHESSPEDIA
Quotes of the Day
After losing a game I play the next one better. After losing the 2nd game I play like a lion. After 3 defeats in a row, anyone can beat me!
Eduard Gufeld
I don’t believe that Garry likes making decisions by democratic procedures. When there is a decision that he doesn’t like, he just turns against this organization.
Georgios Makropoulos 2013
Karpov is the official World Champion, but I’m not sure what that really means.
Jan Timman 1993
I spend hours playing chess because I find it so much fun. The day it stops being fun is the day I give up.
Magnus Carlsen
Carlsen: “I ran out of steam towards the end but fortunately I played better than he did”
Magnus Carlsen 2017