Introducing Igel chess engine

[peter]

Igel 3.2.0 at https://github.com/vshcherbyna/igel/releases/tag/3.2.0 (official executable binaries for Windows and IGN net).
...
- new network ign-1-9a48854b created by using prev network (ign-1-3e998e78) and re-trained with a different lambda

Thanks for the new version!
To make the extra to be downloaded net getting used, just place it in same directory as the compile?
Thanks and regards again,

[Gabor Szots]

Igel 3.2.0 at https://github.com/vshcherbyna/igel/releases/tag/3.2.0 (official executable binaries for Windows and IGN net).
...
- new network ign-1-9a48854b created by using prev network (ign-1-3e998e78) and re-trained with a different lambda

Thanks for the new version!
To make the extra to be downloaded net getting used, just place it in same directory as the compile?
Thanks and regards again,

You don't have to download the net, it is included in the exe. It is there only for those who want to compile the code for themselves.

[peter]

Igel 3.2.0 at https://github.com/vshcherbyna/igel/releases/tag/3.2.0 (official executable binaries for Windows and IGN net).
...
- new network ign-1-9a48854b created by using prev network (ign-1-3e998e78) and re-trained with a different lambda

Thanks for the new version!
To make the extra to be downloaded net getting used, just place it in same directory as the compile?
Thanks and regards again,

You don't have to download the net, it is included in the exe. It is there only for those who want to compile the code for themselves.

Thanks, Gabor, thought so anyhow, (compile works without extra- net in directory as well as without it), just wanted to be sure

[voffka]

Igel 3.3.0 at https://github.com/vshcherbyna/igel/releases/tag/3.3.0 (official executable binaries for Windows and IGN net).

This release brings adequate improvement in strength as a result of a switch to a new network architecture (halfkav2) and re-training network from scratch using existing Igel data as well as newly generated data from Igel 3.2.0.

In order to improve the quality of existing data some work was done to 'sanitize' my old data files. In addition to the sanitization, there were also some improvements in Igel's training data generator such as adding hash table to avoid duplications and more stricts fen checkes that helped to produce a higher quality of Igel 3.2.0 data used for training.

I also experimented with d5 positions that resulted in ability to generate data quickly to get some elo in initial phases of the training. Network is trained of d5 + d8 Igel positions with d16 validation Igel positions.

This version only supports AVX2 builds but I am going to look at adding AVX512 support in future releases.

What's new:

- new network architecture
- new network ign-2-51ba2968

Regression run against Igel 3.2.0 on Fast Time Control (3+0.03)

Code: Select all

Score of Igel 3.3.0 64 BMI2 AVX2 vs Igel 3.2.0 64 BMI2 AVX2: 1713 - 756 - 2531  [0.596] 5000
...      Igel 3.3.0 64 BMI2 AVX2 playing White: 1073 - 258 - 1169  [0.663] 2500
...      Igel 3.3.0 64 BMI2 AVX2 playing Black: 640 - 498 - 1362  [0.528] 2500
...      White vs Black: 1571 - 898 - 2531  [0.567] 5000
Elo difference: 67.3 +/- 6.8, LOS: 100.0 %, DrawRatio: 50.6 %

[Archimedes]

Would you provide the network file as well? Thank you.

[Dariusz]

wget https://github.com/vshcherbyna/igel/rel ... 2-51ba2968 -O ./network_file
--2023-01-15 13:44:37-- https://github.com/vshcherbyna/igel/rel ... 2-51ba2968
Translacja github.com (github.com)... 140.82.121.4
Łączenie się z github.com (github.com)|140.82.121.4|:443... połączono.
Żądanie HTTP wysłano, oczekiwanie na odpowiedź... 404 Not Found
2023-01-15 13:44:38 BŁĄD 404: Not Found.


Can you fix this? Thanks.

[voffka]

Hi Dariusz and Archimedes,

github had some issues to process this file. I re-tried to upload and it should work now.

[bastiball]

Hello,

Any chances implementing frc?

Regards

[voffka]

Hi bastiball,

Hello,

Any chances implementing frc?

Regards

I might look into this once a few things settle.

[bastiball]

Hi bastiball,

Hello,

Any chances implementing frc?

Regards

I might look into this once a few things settle.

Looking forward to it