169518829100544000000000000000
this is just for first 10 moves..
[3]
How many total number of different chess games are possible?
this is not solved i think..
there are estimates to the number which go to a few powers of 10..
169518829100544000000000000000
this is just for first 10 moves..
[3]
Allis also estimated the game-tree complexity to be at least 10123, "based on an average branching factor of 35 and an average game length of 80 only".
As a comparison, the number of atoms in the Universe, to which it is often compared, is estimated to be between 4x1079 and 1081.