20 Questions is a game of deductive reasoning that gained popularity in the 1940s, notably through a successful radio show of the same name.
Gameplay
- One player, the “answerer,” thinks of a subject that should be familiar to common people.
- The answerer answers all questions with “yes” or “no.”
- The other player(s) ask questions to guess the subject, winning if they guess it without exceeding 20 questions.
Inspiration and evolution
Inspired by 20q, the game by Radica, I have developed a more sophisticated computer program called 19 Questions, featuring an improved mathematical model utilizing likelihood and entropy, rather than neural networks.
Play now at https://apps.phor.net/19q/
This game works exceptionally well on the iPhone.
Related resources
- The algorithm used by 20q
- The algorithm used by 19 Questions
- Mathematical analysis of the entropy function - foundational to this effort.
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