view wisdom/hydra @ 11288:9613519b554c

<int-e> learn 8/8/8/8/8/8/8/8 is an empty chess board in FEN notation.
author HackBot
date Sat, 30 Dec 2017 16:57:14 +0000
parents a01895f97c9c
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http://www.madore.org/~david/math/hydra0.xhtml , dire: http://www.madore.org/~david/math/hydra.xhtml , theory: http://www.madore.org/~david/weblog/d.2008-03-27.1537.html http://www.madore.org/~david/weblog/d.2008-03-16.1534.ordinaux-et-hydres.html http://math.andrej.com/2008/02/02/the-hydra-game/ https://en.wikipedia.org/wiki/Goodstein%27s_theorem