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
Time trouble is blunder time.
Alexander Kotov
The duty of a World Champion is not only to play games but also to explain to the public why he is winning
Garry Kasparov NIC 1989
I don’t particularly like being searched electronically. It is inconceivable that such a thing would happen in any other sport. It is fundamentally anti-chess, and I think the people who are behind this decision need their heads looked at! They are sick! They are ruining the very beauty that is chess.
Nigel Short 2016
Chess politic is not my dream, but I will be happy when we start to change things and organize a better chess life in the world.
Anatoly Karpov 2010
Carlsen: “I ran out of steam towards the end but fortunately I played better than he did”
Magnus Carlsen 2017