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.
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Quotes of the Day
The Golden Age, when machines were weak and my hair was strong!
Garry Kasparov 2017
When I see the Berlin defence, I am almost happy that I am not longer a top player!
Nigel Short 2016
School is a waste of time for me. I want to be world chess champion, and they can’t teach me anything there.
Robert Fischer 1961
Maybe I had something of Capablanca. Why should I prepare when I have ideas?
Svetozar Gligoric 1989 NIC
I am the best player in the world, and I am here to prove it.
Robert Fischer 1971