The physicist Mobius has discovered the so-called 'world formula' and locked himself up in a sanatorium for the mentally ill so that his research results do not fall into the wrong hands. But 'chance coincides with planned people when they reach the opposite of their goal'. Durrenmatt's comedy, premiered in 1962 and long since become a classic, was re-staged in 2013 by Herbert Fritsch at the Zurich Schauspielhaus 'extremely ingeniously'.