Read "The 64-Square Madhouse" by Fritz Leiber online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
Sitzfleisch (which roughly means endurance -- "sitting flesh" or "buttock meat") is the quality needed above all others by tournament chess players -- and their audiences.
After Sandra had watched the games (the players' faces, rather -- she had a really good pair of zoomer glasses) for a half hour or so, she had gone to her hotel room, written her first article (interview with the famous Dr. Krakatower), sent it in and then come back to the hall to see how the games had turned out.