Search found 63 matches

by Branko Radovanovic
Mon Jan 06, 2020 11:45 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish Rollercoaster Effect
Replies: 18
Views: 4630

Re: Stockfish Rollercoaster Effect

If white has a score of 0.30 and black has a score of -0.30, it just means both sides believe the other would be in deeper trouble if they played the blunder on this position, than if it was just 0.20/-0.20 or 0.10/-0.10. The old paradigm would show 0.00 and we wouldn't know anything about this. So...
by Branko Radovanovic
Mon Jan 06, 2020 12:06 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish Rollercoaster Effect
Replies: 18
Views: 4630

Re: Stockfish Rollercoaster Effect

In the new paradigm, the 30% move increases the chances of white winning, and increases the chance of black winning, so it makes sense that white would show a bigger score for itself, and black would show a bigger score for itself, causing the roller coaster effect . The problem is the user wanting...
by Branko Radovanovic
Sat Jan 04, 2020 12:31 pm
Forum: Computer Chess Club: General Topics
Topic: another hard position (mate in 18) from 1998, by Ed Shröder
Replies: 24
Views: 4061

Re: another hard position (mate in 18) from 1998, by Ed Shröder

...and so does Spike 1.4, even if some of the intermediate mate evals are spurious: 0 00:00 0 0 -5,89 1 00:00 128 64k -4,54 Qd3xf3 1 00:00 179 60k -4,54 Qd3xf3 2 00:00 316 105k -4,57 Qd3xf3 Bf6-d8 2 00:00 522 174k -2,02 h4-h5 Nf7-g5 Nb4xc6 Qd7xc6 h5xg6+ 2 00:00 733 183k -2,02 h4-h5 Nf7-g5 Nb4xc6 Qd7...
by Branko Radovanovic
Sat Jan 04, 2020 12:17 pm
Forum: Computer Chess Club: General Topics
Topic: another hard position (mate in 18) from 1998, by Ed Shröder
Replies: 24
Views: 4061

Re: another hard position (mate in 18) from 1998, by Ed Shröder

Houdini 1.5a gets it too: 4/14 00:00 2k 0 -1,68 h4-h5 Kh7-h8 h5xg6 Nf7-g5 Nb4xc6 Qd7xc6 Ra5xb5 5/14 00:00 2k 0 -1,68 h4-h5 Kh7-h8 h5xg6 Nf7-g5 Nb4xc6 Qd7xc6 Ra5xb5 6/18 00:00 4k 3.632k -1,64 h4-h5 Kh7-h8 h5xg6 Nf7-g5 Nb4xc6 Qd7xc6 Ra5-a7 Rb8-a8 7/18 00:00 6k 820k -1,76 h4-h5 Kh7-h8 h5xg6 Nf7-g5 Nb4-...
by Branko Radovanovic
Sun Oct 06, 2019 9:56 pm
Forum: Computer Chess Club: General Topics
Topic: question about weak level of engines
Replies: 9
Views: 2602

Re: question about weak level of engines

I prefer the weak levels to have the following properties: 1)They are not deterministic so humans cannot learn a fixed way to beat them. 2)Their playing strength is fixed and not dependent on hardware or time control. Are there engines with weak levels that have these properties when the levels are...
by Branko Radovanovic
Sat Sep 14, 2019 6:27 pm
Forum: Computer Chess Club: General Topics
Topic: My failed attempt to change TCEC NN clone rules
Replies: 92
Views: 11835

Re: My failed attempt to change TCEC NN clone rules

Quote from the TCEC rules: Definition: A neural network is a computer system modeled on the human brain and nervous system. For the purpose of TCEC a participant is considered a neural network (NN) engine if it generally requires the use of GPU and consists of at least the following 3 parts: The cod...
by Branko Radovanovic
Tue Aug 27, 2019 9:34 am
Forum: Computer Chess Club: General Topics
Topic: Similarity tester - 2nd generation - BETA
Replies: 33
Views: 8008

Re: Similarity tester - 2nd generation - BETA

My impression - not sure if that's true or not, so I'd like to see it tested - is that SF10's play is more similar to LC0 than e.g. SF9 was. That would make sense because if LC0's style is the "chess truth", devoid of preconceptions, one would expect AB engines to gradually approach it. not necessa...
by Branko Radovanovic
Mon Aug 26, 2019 4:56 pm
Forum: Computer Chess Club: General Topics
Topic: Similarity tester - 2nd generation - BETA
Replies: 33
Views: 8008

Re: Similarity tester - 2nd generation - BETA

Did some Lc0 testing - http://rebel13.nl/html/kai.html SF vs Lc0 very low similarity. Indeed, and that's not surprising. No real difference between SF8 and SF10 vs NNs - that seems to prove my impression was not correct, though. And, finally, of all AB engines SF is the most similar to Lc0 (while r...
by Branko Radovanovic
Mon Aug 26, 2019 12:11 am
Forum: Computer Chess Club: General Topics
Topic: Similarity tester - 2nd generation - BETA
Replies: 33
Views: 8008

Re: Similarity tester - 2nd generation - BETA

Would be interesting to compare leela (with different networks) to all the other usual AB engines My impression - not sure if that's true or not, so I'd like to see it tested - is that SF10's play is more similar to LC0 than e.g. SF9 was. That would make sense because if LC0's style is the "chess t...