@12807
Again:
Promotions happen in chess games, and neither the Gourion paper nor the file with 10,000 sample positions without promotions to pieces not previously captured exclude those:
they exclude only promotions to pieces not previously captured.
Promotions to pieces not previously captured happen occasionally in master games or ICCF games, but when they happen, then promotions are to a queen.
Underpromotions happen occasionally in master games or ICCF games,
but when they happen, the piece promoted to is already captured.
Underpromotions to pieces not previously captured do not happen in master games or ICCF games, so should not be counted when talking about optimal play by both sides as relevant to weakly solving Chess.
If the Laws of Chess were changed so you could only promote to either a queen,
or a piece previously captured, then all master games and ICCF games would stay the same,
with the same moves and the same outcome.
So the count should be as if the Laws of Chess were thus changed.
Hey shig - tygxc doesn't have to shut up.
What are you doing here?
tbf it would be highly beneficial to all parties involved if tygxc DID shut up.
MEGA - have you noticed that nobody ever agrees with tygxc?
...
Not quite true. @tygxc does sometimes (but not always).