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How many chess games are possible?

Key Facts In This Video

  1. In the 1950s, Claude Shannon estimated that there are 10^120 variations of chess games possible. There are 10^80 atoms in the observable universe. 00:24

  2. Here's how Shannon calculated this number. 01:17

  3. Mathematician Godfrey Hardy put his estimate at 10^10^50. 07:52