I have a little experience playing tournament bridge when stoned on marijuana. Before one session I smoked a whole joint of Panama Red, which was considered strong stuff in those days. When I got to the playing area I was unsure whether I would be able to play, I was so zonked. On the first hand I discovered that I was able to follow suit, so I figured that I could get through the session. On the second hand I was declarer in a slightly difficult hand. I found that visualization had become almost effortless. End result: a score of 206 matchpoints when average was 156, which is quite a good single session score. (For those unfamiliar with tournament bridge, I once tied for 4th and 5th in a large tournament with back to back session scores of 195 and 194.5.)
Another low level pro told me that once when she was stoned on grass at a tournament she had to excuse herself from the table. She went to the ladies' room and asked herself, "What am I doing with my life? Why am I playing this silly game?"
In college I cajoled a friend into playing go stoned on grass. (We were both 4 kyu.) But instead of playing, he just wanted to arrange the stones into interesting patterns. Like a huge White arrow.
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I'll volunteer for modafinil (or beer)
