3 ms·
That estimate would be equally precise and rough, in that the first 85 of 170 digits would all be correct. Correcting the last 85 digits amounts to counting al
by tromp 11y ago
That estimate would be equally precise and rough, in that the first 85 of 170 digits would all be correct.
Correcting the last 85 digits amounts to counting all positions with various symmetries, which would be as big an undertaking as computing L19, but a whole lot messier..
- qwerty1793 11y agoSorry, but how did you compute this? Do you know that there are less than 10^85 board positions which have a symmetry?
- tromp 11y agoThe bulk of symmetric positions are those with 180 degree rotation or reflection symmetry, and there are at most 3^{10x19} of those (I had mistakenly bounded it as 3^180). So it's actually less than 10^90, meaning that L19/8 is correct in the first 80 digits.