Search found 3744 matches

by jdart
Mon Dec 16, 2019 3:05 pm
Forum: Computer Chess Club: General Topics
Topic: Null move test
Replies: 3
Views: 406

Null move test

This position occurred recently in an online game: 8/5K2/p2kp2b/p1p1p3/2P1P3/1P3P2/5N2/8 w - - White played Nh1! and won. Finding this for my engine appears to be closely tied to how much null move reduction is applied in a position like this, where there is only a minor for each side on board, plus...
by jdart
Sun Dec 15, 2019 5:32 pm
Forum: Computer Chess Club: General Topics
Topic: Engine's "ELO" revisited
Replies: 38
Views: 2336

Re: Engine's "ELO" revisited

Arasan has variable strength (settable in its native GUI from 0-100). I am pretty sure you could find a setting that gave you a fairly even match.

--Jon
by jdart
Tue Dec 10, 2019 12:20 pm
Forum: Computer Chess Club: General Topics
Topic: Arasan 22.0
Replies: 11
Views: 1006

Re: Arasan 22.0

Thanks Jon for your long time efforts on this interesting engine. I was curious about one thing. If I feed a bunch of Tal games to the program for generating the training file, will I make it to play more aggressively? I don't think that would be the best way to tune playing style. I use a very big...
by jdart
Tue Dec 10, 2019 12:12 pm
Forum: Computer Chess Club: General Topics
Topic: Arasan 22.0
Replies: 11
Views: 1006

Re: Arasan 22.0

AdminX wrote:
Tue Dec 10, 2019 10:06 am
Small request, can you make an android version available on your website. It is the only version not listed. :(
There are a lot of Android variants (different ABIs). So one issue is that I am not sure which one(s) to target.

--Jon
by jdart
Tue Dec 10, 2019 2:23 am
Forum: Computer Chess Club: General Topics
Topic: Arasan 22.0
Replies: 11
Views: 1006

Arasan 22.0

Arasan 22.0 is available from https://www.arasanchess.org . This is basically the same version that played in the recent ACCA tournament and CSVN Programmer's Tournament. Changes in Arasan 22.0: 1) Makefile fixes: add -flto to optimized builds. Fix PGO builds with clang. Don't use gold linker on Mac...
by jdart
Tue Dec 10, 2019 1:59 am
Forum: Computer Chess Club: General Topics
Topic: What are GM Ding Liren chances of becoming Carlsen Next challenger ?
Replies: 5
Views: 482

Re: What are GM Ding Liren chances of becoming Carlsen Next challenger ?

Qualification process is here: https://en.wikipedia.org/wiki/World_Chess_Championship_2020. There is one more event in the FIDE Grand Prix (Jerusalem), which is part of the process. Caruana is qualified automatically. Ding is very likely to qualify for the Candidates tournament, if he hasn't already...
by jdart
Mon Dec 09, 2019 5:39 pm
Forum: Computer Chess Club: General Topics
Topic: 13th ACCA World Computer Rapid Chess Championships
Replies: 24
Views: 5839

Re: 13th ACCA World Computer Rapid Chess Championships

I think Komodo played into a bad book line in the playoff game it lost: [Event "AWCRCC19"] [Site "Internet Chess Club"] [Date "2019.12.08"] [Round "1"] [White "DeusX"] [Black "Komodo"] [Result "1-0"] [ECO "B90"] [WhiteElo "2800"] [BlackElo "3400"] [PlyCount "191"] [EventDate "2019.??.??"] [TimeContr...
by jdart
Sun Dec 08, 2019 10:42 pm
Forum: Computer Chess Club: General Topics
Topic: 13th ACCA World Computer Rapid Chess Championships
Replies: 24
Views: 5839

Re: 13th ACCA World Computer Rapid Chess Championships

Tournament results - DeusX won the tiebreak games and is 1st: Name R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 Score #g OppScore OppRating 1 DeusX (2800) +w4 =b2 +w10 +b5 +w7 +b12 +w9 =b8 +w6 =b3 +w11 9.5 11 56.5 2537 2 Komodo (3415) +b8 =w1 =b3 +w11 =b4 +w6 +b10 +w5 +b7 +w12 +b9 9.5 11 56.5 2481 3 ArasanX (...
by jdart
Sun Dec 08, 2019 10:39 pm
Forum: Computer Chess Club: General Topics
Topic: CSVN tournament, 7 + 8 December!
Replies: 15
Views: 1846

Re: CSVN tournament, 7 + 8 December!

Richard Pijl tells me Rofchade won the Programmer's Tournament. Arasan was 2nd. I don't have more info right now.

--Jon
by jdart
Fri Dec 06, 2019 1:02 am
Forum: Computer Chess Club: General Topics
Topic: nice tactical position
Replies: 5
Views: 642

nice tactical position

From a recent online Arasan game: r1bq1r2/bp3pk1/2pp4/p6p/P1BPPP1N/6Bn/1P4pK/2RQR3 w - - 0 22 White played Nxg2 and won. But on longer analysis, it appears f5! and allowing Black to promote is even better. Stockfish and Houdini are very fast on this. But other engines have difficulty (Fritz 16 for e...