Which is greater? The number of atoms in the universe or the number of chess moves?

The question came from Claude Shannon, inventor of ‘Information Theory’ in 1948. The theory uses mathematics to understand the rules governing the transmission of messages through communication systems, applicable to everything from computer code, speech and music, to the dancing of bees.

Is “Go” Harder Than Chess? (Overview) - PPQTY

Are there really more possible Chess games than atoms in the Universe?, by Alfonso Ochoa

Is it true that the number of possible chess games is greater than the number of atoms in the Universe?, by Space

It has been suggested that there are more possible games of chess than atoms in the universe. Is this true, and how do we know this? - Quora

Are there more possible legal moves in chess than there are atoms in the universe? - Quora

Patrick Comerford: Counting possible chess moves, atoms in the universe, grains of sand and the number of stars

Number of Possible Chess Games: Unbelievable Combinations

Which is greater? The number of atoms in the universe or the number of chess moves?

The greatest number you can imagine