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In chess a few years ago there was drug-testing in many tournaments as part of the international chess federations' drive to get into the Olympics.
Most in the chess community thought it was about as retarded as anyone here would think.
And it wasn't JUST a suggestion. It was reality. They actually had drug-testing in chess tournaments.

[/ QUOTE ]Same thing happened in bridge. One woman was disqualified from the World Championships in Montreal 2 or 3 years ago. From what I understand, she was taking a physician prescribed diet medication.

But, where mental stamina is a significant factor in performance, it does not seem unreasonable to restrict drugs if you want to make sure the playing field is level.