CCRL Discussion Board

I have created a chess engine - Fizbo - could you please test it and add it to CCRL?

Executable can be downloaded from:
https://sites.google.com/site/fizbochessengine/

Features:
uses Winboard protocol
runs on 1 CPU core
requires x86 Windows
requires "popcount" and "bitscanforward" instructions
main transposition table size if fixed at 128 Mb; total RAM use is around 144 Mb
this version does not use endgame bit-bases or table-bases
no opening book

Estimated strength is around 2800 ELO (it plays about even with Fruit 2.31).


Thank you very much, Youri Matiounine.

I only have 64-bit Windows.
Any chance that you could provide a compile for that?

Graham.

It actually is 64 bit executable, i just incorrectly listed it is as x86. I even called the executable fizbo11x64, to remember it. I apologize for the confusion.

Youri.

ymatioun wrote:It actually is 64 bit executable, i just incorrectly listed it is as x86. I even called the executable fizbo11x64, to remember it. I apologize for the confusion.

Youri.

On my i5 I get this.
Fizbo will not run on this computer - I use Windows 7 Home Premium.

I don't know what is causing the problem. I just tried to run it on my laptop (i5+Win7) - it works fine. And for this compile i make some changes to ensure portability - turned off endgame bit-bases, turned off all logging, included runtime C++ libraries into the executable. I'm all out of ideas.

Youri.

If you somehow come up with a 64-bit exe that works for me, I'll include Fizbo in my upcoming 47th Amateur Division 3 tournament.

It seems to need a modern CPU to work. It works on my Intel Sandybridge laptop, but not on my AMD Phenom II X6. Perhaps it needs AVX support in the CPU.

This is it! Thanks for pointing it out to me.
I realized that the executable was created with "/AVX" compiler switch.
I recompiled it without it, and i think now it should work on any CPU supporting "popcount" instruction - any Intel "i" CPU.
The new executable is posted at "https://sites.google.com/site/fizbochessengine/", please use it for testing.

Thank you very much, Youri.

It runs now on my AMD Phenom II X6.

Youri - just for our engine notes, what country are you from?

I live in New York, USA.

Thanks.

I just added a 64-bit executable that does not use "popcount" instruction. This should work on any 64-bit CPU.
It is posted at "https://sites.google.com/site/fizbochessengine/".

Youri.

ymatioun wrote:I just added a 64-bit executable that does not use "popcount" instruction. This should work on any 64-bit CPU.
It is posted at "https://sites.google.com/site/fizbochessengine/".

Youri.

Thanks. Much appreciated.

Hi i am testing your engine on my Win8-64 i-7 4-cpu 3.4 Ghz desktop. It makes the first move fairly quickly as White, but not as Black.... don't know why. it sometimes takes a long time to make it's black move.
It's that way with the regular and the no pc version. So i don't play it on quick time settings. I'm going to test it using time controls of 1+1, then 5+2, 15+3, and maybe some 40 moves 40 minute ones.
I see in CCRL 40/40 standings it has a very respectable 51st place with 51 Fizbo 1.1 64-bit , rated 2778.
I'll let you know how my tests come out. I'm testing it against about 60 other engines rated 2700 and up.
JB

I tested Fizbo 1.2 against about 65 other computers rated 2800 and above at time levels of 1 min 1 sec added.
It scored 42/132 games, which would give it a rating of between 2700-2900, depending on how you score things. The ones it tied were rated right around 2900.
I'll try some tests at 15 1 and see how it goes.
JB