## Search found 111 matches

Thu Jul 02, 2020 10:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9307

### Re: Throwing out draws to calculate Elo

Well, before we get wrapped up in the shifting goal posts, let's be clear about something. My previous post was directed towards the claim that the distribution of LOS scores changes (specifically, shifts towards values further from 0.5) as you play more games. The posted query output shows that the...
Thu Jul 02, 2020 9:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9307

### Re: Throwing out draws to calculate Elo

Ok, I'll bite, Dann (really important comma!) :D Here's the percentage of trials from the data in your Access file that showed LOS greater than various thresholds. What exactly is the problem, again? LOS_threshold percent_trials_greater_than_LOS_threshold --------------------------------------- ----...
Tue Jun 30, 2020 11:22 pm
Forum: Computer Chess Club: General Topics
Topic: Join the Bullet Chess Campaign
Replies: 8
Views: 853

### Re: Join the Bullet Chess Campaign

Well, for every game that Hikaru gets a bad position and wins only on time there are oodles where he just wins on the board. I prefer very fast games, and have played more 1+0 than anything else, but do prefer a small increment (0+1, 1+1, and 2+1 are all good). It's just harder to find opponents. 1+...
Tue Jun 30, 2020 6:03 pm
Forum: Computer Chess Club: General Topics
Topic: Join the Bullet Chess Campaign
Replies: 8
Views: 853

### Re: Join the Bullet Chess Campaign

Indeed. Rating compression from higher draw rates at longer time controls has such an effect.

My "somehow very strong chess players..." statement wasn't meant as actual wonderment; I was being facetious
Tue Jun 30, 2020 6:02 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9307

### Re: Throwing out draws to calculate Elo

Again, the question is not whether it is possible for a match of equal engines with a very, very, very high draw rate to end with a high percentage of decisive games being won by one of them. The question is whether it is more likely to happen when the winning engine is stronger, combined with whate...
Tue Jun 30, 2020 12:44 pm
Forum: Computer Chess Club: General Topics
Topic: Join the Bullet Chess Campaign
Replies: 8
Views: 853

### Re: Join the Bullet Chess Campaign

Well, there's maybe no such conception within the chess playing community, but I'll go out on a limb and say the point of the OP is not to popularize chess among chess players :wink: Most of the non-chess players I've talked to about chess do think the game is exclusively played in a way that takes ...
Tue Jun 30, 2020 12:19 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9307

### Re: Throwing out draws to calculate Elo

As far as I'm aware no one's claimed that we infer anything with 100% certainty from any results. Any rating system at all, accounting for draws or not, will sometimes give a higher rating to a weaker or equal engine if the right improbable results occur, so pointing out that this will sometimes hap...
Mon Jun 29, 2020 9:35 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9307

### Re: Throwing out draws to calculate Elo

... (sufficiently more likely to offset the improbability of a weaker engine winning all X decisive games, which gets more difficult the higher X is) ... This should actually be: (sufficiently more likely to offset the improbability of an equal engine winning all X decisive games, which gets more d...
Mon Jun 29, 2020 8:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9307

### Re: Throwing out draws to calculate Elo

What state of affairs is most likely will obviously depend on your prior for the distribution of strength differences (even winning 30/30 games in a match wouldn't allow a strong inference to superiority of the winning engine if your prior was that 9,000,000,000,000,000,000 out of 9,000,000,000,000,...
Sun Jun 28, 2020 1:42 pm
Forum: Computer Chess Club: General Topics
Topic: Should SF solve these positions at lower depths?
Replies: 3
Views: 328

### Re: Should SF solve these positions at lower depths?

The iteration at which it finds the tactic is a bit higher than I'd guess, but it's also not that surprising, given the only way the whole thing works is a (very) temporary queen sacrifice a few ply into the line. To know that the line works, and not just guess based on the favorable geometry, you h...