Two tournaments in two days without sleeping pause

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Avatar of phil3

In Friday I was in Prague in tournament from 9 pm to 6 am, and then I went to one city near Prague to other tournament. From sixth round, I started having big problems with concentration, I cannot believe I did won 6th and 8th round with 1900+ players with these problems, mainly 8th round. In the end of the tournament, I did not can clearly concentrate, what is on chessboard, so I did not see the pawn is protected, so I lost my queen and game too. I am lucky I got back with not too big complications, but in train I only slept.

Did you ever played live tournament with sleep deprivation more than one day? How did you play?