This reminds me of a situation I found myself in at Hastings a couple of years ago. Six hours in to what turned out to be a game lasting more than seven, I found myself with a bladder fit to burst, but down to playing off my 30-second increments.Clive Blackburn wrote: ...but what should a player who needs an urgent toilet break do if he is very short of time?
Would he be entitled to ask the controller to stop the clocks for a few minutes?
It was an ending I should have held, but tiredness, desperation to go to the loo, and no doubt lack of talent led me to lose a 105-move marathon.
With hindsight I should just have given in and taken the loss on time. But as far as I know there's no provision in the rules to stop a clock for any of the above reasons. For me it's the most significant drawback of Fischer timing, but I still prefer it to other timing methods. I guess I should just learn to play more quickly in the early part of the game!
But I wouldn't dream of asking an opponent to accommodate my toilet break on their time. I also don't see how arrangements to allow such breaks could be written in to the regulations without leaving them open to abuse.