119 karma · joined March 8, 2017
You can basically never do that, even in the endgame, since you get always exponential blow up! Furthermore with less pieces on the board, they hamper each others movement less, therefore the branching factor really goes down only slightly. If you want to compute all mate-in-n positions, you discover the theoretical values in tiers, by unmoving each tier twice: If you know all mate-in-0,...,mate-in-n positions, unmove the mate-in-n set for the defender and filter out results, where he can avoid moving into the union of the known tiers. Then unmove for the attacker, to find mate-in-(n+1). Repeat until convergence. Repeat the whole process for the left over positions, to find more theoretical values.
Nice to see a mirror of my experience.
Seemingly we are learning here something new about Bruce Lee, that outside observers can't understand, most notably western ones. This decelaration of time also happened to me two times spontaneously, when I was attacked on surprise, hence I believe this verbatim. In both cases, that got me plenty of time, to decide what to do and was able to save myself without a scratch. However it never occurred to me,that that had something to do with my Chi force...
FM Roese here (best DWZ 2399). I agree, figuring or even conjecturing that Fischer overlooked 30.g3 is totally insane. However he also did not saw the theoretical draw, this strikes me even more off. He never opened up about his idea, so in all likelihood he calculated something very stupid.
> if you plug it into an engine, it shows an equal evaluation
They criticized this argument rightly, but many basically repeated your mistake in the process of doing so. All engines use some evolved adaption of iterative refinement, be it either "Iterative deepening" (of an alpha beta search) [1] or "UCT" [2]. If you post computer evaluations you should at the very least give the reported nominal search depth and the engine name and version, otherwise you are just asking for trouble. On computer chess fora [0] they often post the whole log file bluntly.
[0] https://www.talkchess.com/
[1] https://syzygy-tables.info/?fen=8/6B1/8/8/B7/8/K1pk4/8_b_-_-...
Also not correct if the sum overflows.
You can't call a rule new, which is nagging them for nearly a decade now:
https://www.chess.com/news/view/dress-code-incident-at-world...