Introducing Igel chess engine

[Graham Banks]

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

I'm still a week away from finishing my 3.0.0 testing.

[voffka]

Hello Ed,

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%)

Thank you for testing Igel. This is on short tc?

[voffka]

Hello Graham,

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

I'm still a week away from finishing my 3.0.0 testing.

Sorry about that. The elo increase felt worth the release

[voffka]

Hello Alex,

Hi Voffka!
Please, compile it also for Windows 10 ARM64

Sure, I will compile soon ARM64 NEON. I am curios if Rubi 2.1 on your list was also an ARM compile or a windows binary running via emulation?

[Graham Banks]

Hello Graham,

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

I'm still a week away from finishing my 3.0.0 testing.

Sorry about that. The elo increase felt worth the release

I'll forgive you.

[voffka]

Hello Alex,

Please, compile it also for Windows 10 ARM64

Please check the ARM64 NEON build at https://github.com/vshcherbyna/igel/rel ... _3_0_5.exe. The network is already embedded inside, so nothing to configure.

[Rebel]

Hello Ed,

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%)

Thank you for testing Igel. This is on short tc?

CCRL 40/2.

[AlexChess]

Hello Alex,

Please, compile it also for Windows 10 ARM64

Please check the ARM64 NEON build at https://github.com/vshcherbyna/igel/rel ... _3_0_5.exe. The network is already embedded inside, so nothing to configure.

Thank you my chess friend! You will have results of Igel 3.0 5 against all top engines on Windows 10 ARM64 ASAP

Regards, AlexChess

[Damir]

Thanks for the new engine Volodymyr, but unfortunately I am experiencing time problems with latest version of Igel...
It seems there is no NNUE parameter when I open Igel parameters..
After 32 moves engine stopped responding and lost on time in a 16+0 game....

No Network File in Igel parameter: https://www.solidfiles.com/v/y6RPMGgd674MM
Igel lost on time: https://www.solidfiles.com/v/dN87ZRB3gN7PM

[voffka]

Hello Damir,

Thanks for the new engine Volodymyr, but unfortunately I am experiencing time problems with latest version of Igel...
It seems there is no NNUE parameter when I open Igel parameters..
After 32 moves engine stopped responding and lost on time in a 16+0 game....

No Network File in Igel parameter: https://www.solidfiles.com/v/y6RPMGgd674MM
Igel lost on time: https://www.solidfiles.com/v/dN87ZRB3gN7PM

Thanks for the feedback. The evaloption is removed in Igel 3.0.0 as it was redundant. Regarding the lost on time - this is worrying, I run probably around 200k games and did not saw this issue, I will closely monitor to see and understand what is going on.