Amazing chess feats while in altered states of consciousness This might seem an odd question, however out of personal curiousity, are there any documented accounts of amazing feats by players while in an altered state of consciousness?  What I'm looking for would be something like attempts at drunken, blind, simultaneous chess.
I don't know if this counts, but here is a story (unfortunately only in Norwegian) about the former president of the Norwegian Chess Federation, Jøran Aulin-Jansson, who in his youth played blitz for 92 hours straight: http://www.nrk.no/sport/92-timer-med-sjakk-i-strekk-1.6589371

In 92 hours and 26 minutes he played 701 games and won 549 with 32 draws.

He explains how accidentally eating a rotten chicken kept him awake during the third night.

At one point he hallucinated about spiders crawling up his leg. I guess that qualifies as "altered state of consciousness".