Introducing Igel chess engine

[Gabor Szots]

Hello Gabor,
It is possible to adjust those things in makefie and embed other networks in Igel as long as architecture matches. But keep in mind that the end result will not be Igel engine - it will be something else as other networks will not qualify for Igel Generation Network rules I mentioned some time ago (https://github.com/vshcherbyna/igel#ige ... tworks-ign).

At the same time Igel is open source and anyone can do anything with it as long as GPL3 license is not violated Please reach out to me via PM to explain in more details what you are trying to do , perhaps I can help.

I never intended to use other networks. I just wanted a compiling experiment for fun.

[voffka]

Hello Gabor,

I never intended to use other networks. I just wanted a compiling experiment for fun.

Then it is very simple, you can either:

1. Download another network and modify it's path inside makefile: https://github.com/vshcherbyna/igel/blo ... kefile#L12

2. Or you download the other network, and rename it as ign-1-d593efbd and put inside weights folder. You can avoid modification to makefile in this case

[voffka]

Hello Ed,

Volodymyr, thanks for the new Igel in the first place, you are going fast I have a wish, can you please put an executable for older computers standard on your Github page? An Ivibridge compile (ivibridge is from 2012-2015) would cover most older PC's I think.

Work on Igel is basically going 24/7 in parallel tracks to improve search and eval with network data generation happening around the clock on OVH rented hardware.

Regarding the old compiles, I do not generate them intentionally - I believe AVX2 covers vast majority of machines produced in last 9 years and it is fast therefore good to be used in rating lists. If there are enthusiasts or rating lists who want a custom old compile - I support them too and use gcc march option to provide them the fastest compile for their cpu architecture.

[Gabor Szots]

Hello Gabor,

I never intended to use other networks. I just wanted a compiling experiment for fun.

Then it is very simple, you can either:

1. Download another network and modify it's path inside makefile: https://github.com/vshcherbyna/igel/blo ... kefile#L12

2. Or you download the other network, and rename it as ign-1-d593efbd and put inside weights folder. You can avoid modification to makefile in this case

Ah, so I can't make the network choice a UCI parameter (that's what I wanted to do).

[voffka]

Hello Gabor,

Ah, so I can't make the network choice a UCI parameter (that's what I wanted to do).

I removed the EvalOption in Igel 3.0.0 as seen in the change logs https://github.com/vshcherbyna/igel/releases/tag/3.0.0. The main reason to remove it was because many people had all sort of issues with it when configuring in the UI so I wanted something simpler and basically have an Igel exe that just simply works without any configs.

Since Igel is open source enthusiast people can compile custom network in as well via makefile or cmake option like it is explained on the main github page.

[cpeters]

Hello voffka!

Do you plan to implement the 'knowledge' of the wrong bishop in endgames for the engine itself or will it rely on bases solely?

Greetings

[voffka]

Hello Christian,

Hello voffka!

Do you plan to implement the 'knowledge' of the wrong bishop in endgames for the engine itself or will it rely on bases solely?

Greetings

Thanks for reaching out. I may look into it, but most of the tournaments are using tbs, so there is little justification I see on how important this is. Can you please tell your use-case? You are playing Igel on a phone device or without tbs and you can draw it?

[AlexChess]

Hi Voffka!
Just completed test with Igel 3.0.0 and 3.0.5 is out

Please, compile it also for Windows 10 ARM64



Regards, AlexChess

[Rebel]

Igel 3.0.5 at https://github.com/vshcherbyna/igel/releases/tag/3.0.5 (official executable binaries for Windows and IGN net).

This release brings significant improvements in search, time management and evaluation. I accidentally found a strong patch in search which brought around 12 elo in LTC in one shot. Overall strength increase due to search/time management improvements is around 20 elo, strength increase due to new network is 20 elo more. There are also some improvements in SMP mode that were quite good in short time controls: 15 elo, but hard to test on long time control as it will require a lot of computational power.

Seems about right.

Code: Select all

No. Engine               1     2     3     4     5     6     7     8  Score  Games  Perc  
------------------------------------------------------------------------------------------
 1 Stockfish 12       xxxx  62.0  79.5  84.5  81.5  86.5  88.5  87.0  569.5 / 700 (81.36%)  
 2 Komodo Dragon      38.0  xxxx  69.0  81.0  76.5  78.0  77.0  80.0  499.5 / 700 (71.36%)  
 3 Komodo 14          20.5  31.0  xxxx  62.5  58.0  58.5  62.0  62.0  354.5 / 700 (50.64%)  
 4 RubiChess 2.1      15.5  19.0  37.5  xxxx  54.0  53.0  56.0  58.0  293.0 / 700 (41.86%)  
 5 SlowChess 2.5      18.5  23.5  42.0  46.0  xxxx  53.5  46.0  55.5  285.0 / 700 (40.71%)  
 6 Igel 3.0.5         13.5  22.0  41.5  47.0  46.5  xxxx  49.5  54.5  274.5 / 700 (39.21%)  
 7 Ethereal 12.75     11.5  23.0  38.0  44.0  54.0  50.5  xxxx  50.5  271.5 / 700 (38.79%)  
 8 Igel 3.0.0         13.0  20.0  38.0  42.0  44.5  45.5  49.5  xxxx  252.5 / 700 (36.07%)

[cpeters]

Hello Christian,
[...]
[1. ]You are playing Igel on a phone device or without tbs and [2.] you can draw it?

Hello!

1. Not yet (but the direction is right)
2. I cannot draw the mighty igel!


So probably not worth the effort (style-points maybe ?)..

Greetings