@13257
'variation of this that is not skewed to one side of the board, which is entirely reasonable'
++ Not really, white has more reasonable moves than black.
"assuming an average true branching factor of 35" ++ That is way too much.
10^38 = 3^80, hence the average branching factor without transposition must be 3.
There may be positions with 31 legal moves, but most of these can be pruned right away,
and many will just be transpositions, i.e. other move orders leading to the same positions.
Engines use transposition tables and do not recalculate.
No, I didn't know that. I've always understood there were 20.