Search found 162 matches

by abulmo2
Sat Feb 15, 2020 2:03 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: hash collisions
Replies: 227
Views: 7237

Re: hash collisions

That’s what all programmers say, and it is not true. A chess engine should be 100% bug free, no excuses for anything else. What do you call a bug on a chess engine? Is an engine not returning the best move on a given position buggy? Is an engine with hash collisions buggy? Is an engine crashing on ...
by abulmo2
Sat Feb 15, 2020 12:35 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: mmt Vs. Ovyron (G4 D5 BG2)
Replies: 324
Views: 11760

Re: mmt Vs. Ovyron (G4 D5 BG2)

jp wrote:
Sat Feb 15, 2020 11:28 am
OCB?
To me, it just means a French brand of papers for cigarette:Image.
I will return to the CFHA (Club Français des Haïsseur d'Acronymes) a French branch of AHCA (Acronym Haters Club of America).
by abulmo2
Sun Feb 02, 2020 9:29 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/15, 40/2 and FRC lists updated (1st February 2020)
Replies: 1
Views: 287

Re: CCRL 40/15, 40/2 and FRC lists updated (1st February 2020)

40/2 testing since the last update report has included (thanks to Gabor and Sergio):
Amoeba 3.1 64-bit 4CPU
Thanks for testing amoeba 3.1.
by abulmo2
Fri Jan 31, 2020 9:09 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: FGRL 60 sec + 0.6 sec Rating list - 18. Roc 1.5, 34. SlowChess Blitz Classic 1.8, 47. Amoeba 3.1
Replies: 4
Views: 404

Re: FGRL 60 sec + 0.6 sec Rating list - 18. Roc 1.5, 34. SlowChess Blitz Classic 1.8, 47. Amoeba 3.1

Many thanks for testing Amoeba 3.1. The progress is within my expectations. Using my own gauntlet test I got +29 (± 15) Elo above version 3.0.
by abulmo2
Thu Jan 16, 2020 3:49 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Exploring an unusual evaluation function
Replies: 19
Views: 1409

Re: Exploring an unusual evaluation function

n terms of style of play, restricting the evaluation of a position to the number of moves and no more, results in some disastrous sacrifices. For example a rook with no moves immediately available is considered effectively worthless. I anticipated this but thought that maybe it’s potential might be...
by abulmo2
Thu Jan 16, 2020 12:24 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2020
Replies: 78
Views: 12170

Re: New engine releases 2020

I just release Amoeba 3.1. It fixes a few bugs and probably adds a bunch of others. It should be about 30 Elo stronger than the previous version
https://github.com/abulmo/amoeba/releases/tag/v3.1
Have fun with it.
by abulmo2
Tue Jan 14, 2020 9:50 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Board adaptive / tuning evaluation function - no NN/AI
Replies: 20
Views: 1922

Re: Board adaptive / tuning evaluation function - no NN/AI

It sounds like the oracle approach. It was successfull in the 1990s, but was abandonned in favor of tapered evaluation.
by abulmo2
Sun Dec 29, 2019 7:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Microsoft Visual C vs Gcc on Windows
Replies: 4
Views: 592

Re: Microsoft Visual C vs Gcc on Windows

PGO can also produce faster binary with gcc.
by abulmo2
Fri Dec 20, 2019 3:19 pm
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2019
Replies: 460
Views: 119221

Re: New engine releases 2019

Damir wrote:
Thu Dec 19, 2019 7:58 pm
I suppose nobody here is dumb enough to use it..... :lol: :lol:
Dumb, but fast :-)
If you want to see high nodes per second on a single score, you should give it a try.
by abulmo2
Fri Dec 20, 2019 9:26 am
Forum: Computer Chess Club: General Topics
Topic: A complete 1200 lines of code engine (Dumb 1.4)
Replies: 6
Views: 633

Re: A complete 1200 lines of code engine (Dumb 1.4)

A pity that there seems to be no, or no reliable package for compiling D in Msys2, which I use now exclusively for compiling C and C++ (with GCC and G++). My previous investigations showed that GDC asked for trouble and isn't recommended and may be even dead since years. GDC is not dead at all. It ...