Search found 184 matches

by Javier Ros
Sat Nov 10, 2018 3:36 pm
Forum: Computer Chess Club: General Topics
Topic: Knights at g5 h5 by lc0
Replies: 5
Views: 1384

Re: Knights at g5 h5 by lc0

I have long held a theory in my own personal over-the-board human chess which I haven't seen in a any chess book: that there is an advantage of having two knights side by side, especially if near the opponent's king. Knights often make each other redundant, but when they are side by side, they don'...
by Javier Ros
Sat Nov 10, 2018 8:45 am
Forum: Computer Chess Club: General Topics
Topic: Knights at g5 h5 by lc0
Replies: 5
Views: 1384

Re: Knights at g5 h5 by lc0

The same at g4 h4!! at move 34 and knights in h4 h5 at move 20 [Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.07"] [Round "28"] [White "Stockfish8"] [Black "Lc019rc2_11261"] [Result "*"] [BlackElo "2000"] [Time "09:42:30"] [WhiteElo "2000"] [TimeControl "1500+10"...
by Javier Ros
Fri Nov 09, 2018 11:32 pm
Forum: Computer Chess Club: General Topics
Topic: Knights at g5 h5 by lc0
Replies: 5
Views: 1384

Knights at g5 h5 by lc0

I have detected a curious maneuver of knights in g5 and h5 by lc0 in two games of a test that I am doing. In both cases the maneuver leds to a winning attack. The test compares lc0 with AlphaZero against Stockfish 8 without opening book. Lc0 version 0.19 rc2 with net 11261 on Asus Geforce GTX 1060 3...
by Javier Ros
Fri Nov 09, 2018 10:54 pm
Forum: Computer Chess Club: General Topics
Topic: Breaking news from Caruana, Leela is essential part of his preparation
Replies: 3
Views: 1134

Re: Breaking news from Caruana, Leela is essential part of his preparation

Leela Chess Zero has found very original ideas in the opening and is positionally superior to alphabeta engines, which makes it ideal for preparing openings. However, its tactical weakness makes it necessary to carefully check these ideas with a program like Stockfish.
by Javier Ros
Thu Nov 08, 2018 7:23 pm
Forum: Computer Chess Club: General Topics
Topic: Great improvement in fast games in lc0 0.19rc2 version
Replies: 16
Views: 3226

Re: Great improvement in fast games in lc0 0.19rc2 version

Damir wrote:
Thu Nov 08, 2018 11:47 am
rc3 is already released.

https://github.com/LeelaChessZero/lc0/releases
Thanks, I will finish my tests before upgrade to rc3.
by Javier Ros
Thu Nov 08, 2018 7:22 pm
Forum: Computer Chess Club: General Topics
Topic: Great improvement in fast games in lc0 0.19rc2 version
Replies: 16
Views: 3226

Re: Great improvement in fast games in lc0 0.19rc2 version

... Thanks, seems to suggest Lc0 can setup traps effectively against strong engines in fast time controls. Well it is not so clear. Replaying the games at 25 min plus 10 sec the results are: Sf9 +3 -2 =5 lc0 +2 -3 =5 victory for Stockfish9 with 55% In the game with the poissoned knight (24.Qxg6), S...
by Javier Ros
Thu Nov 08, 2018 10:57 am
Forum: Computer Chess Club: General Topics
Topic: Great improvement in fast games in lc0 0.19rc2 version
Replies: 16
Views: 3226

Re: Great improvement in fast games in lc0 0.19rc2 version

... If you want to prove how better lc019rc2 is than lc0181 why do not you play lc019rc2 and lco181 against each other? If you want to demonstrate the power of lc0 against Stockfish you ought to use opening book with at least two ply depth because without opening book Stockfish are obviously in a d...
by Javier Ros
Thu Nov 08, 2018 7:34 am
Forum: Computer Chess Club: General Topics
Topic: Great improvement in fast games in lc0 0.19rc2 version
Replies: 16
Views: 3226

Re: Great improvement in fast games in lc0 0.19rc2 version

When lc0 starts beating latest Stockfish comprehensively, like AlphZero did, let me know. Till then I'm done with computer chess using alpha-beta engines. Well, this thread is about improvements in fast games in lc0 0.19rc2 version and not about Stockfish 8, but I am doing another test between lc0 ...
by Javier Ros
Wed Nov 07, 2018 11:02 pm
Forum: Computer Chess Club: General Topics
Topic: Great improvement in fast games in lc0 0.19rc2 version
Replies: 16
Views: 3226

Re: Great improvement in fast games in lc0 0.19rc2 version

... There's also another strange Lc0 Sicilian endgame where an advanced c-passer + N defeats the R. Looks like some eval tweaking and fine tuning for SF9 endgame eval function is needed. Quality of the above games doesn't look like a 1min+1sec for humans, more like Finals in a Candidates match mayb...
by Javier Ros
Wed Nov 07, 2018 9:48 am
Forum: Computer Chess Club: General Topics
Topic: Great improvement in fast games in lc0 0.19rc2 version
Replies: 16
Views: 3226

Re: Great improvement in fast games in lc0 0.19rc2 version

A curious position was reached in the following game, where the White King is trapped in h1 from move 26 until the end. [Event "Lc019rc2_11261Sf9Initial1plus1_2CPU1024"] [Site "Ros980X"] [Date "2018.11.05"] [Round "24"] [White "stockfish_9_x2"] [Black "lc019rc2_11261"] [Result "*"] [BlackElo "2000"]...