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Igel
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'''Igel''',<br/>
an [[UCI]] compliant [[:Category:Open Source|open source chess engine]] by [[Volodymyr Shcherbyna]] licensed under the [[Free Software Foundation#GPL|GPL]],
initially based on [[GreKo|GreKo 2018.01]] and following independent development since 2018. In August 2020, Igel switched to [[NNUE]] as a main evaluation function using [[Dietrich Kappe|Dietrich Kappe's]] ''Night Nurse'' net <ref>[http://talkchess.com/forum3/viewtopic.php?t=74619 Night Nurse is Bad Gyal in disguise] by [[Dietrich Kappe]], [[CCC]], July 30, 2020</ref> <ref>[http://talkchess.com/forum3/viewtopic.php?f=2&t=74837 Night Nurse 0.2] by [[Dietrich Kappe]], [[CCC]], August 19, 2020</ref> as default <ref>[http://talkchess.com/forum3/viewtopic.php?f=2&t=67890&start=17 Re: Introducing Igel chess engine - Igel and NNUE] by [[Volodymyr Shcherbyna]], [[CCC]], August 19, 2020</ref> participating in [[TCEC Season 19#Second|TCEC Season 19, League 2]], and promoting to [[TCEC Season 19#First|League 1]]. In October 2020 Igel switched to own network trained on Igel 2.6.0 (Hand Crafted Evaluation) participating in TCEC Cup7 and in [[TCEC Season 20#First|TCEC Season 20]].
=Features=
* [[Internal Iterative Deepening]] in [[Node Types#PV|PV-Nodes]]
==[[Evaluation]]==
* [[NNUE]] (as of Igel 2.7.0)
* [[Material|Material Evaluation]]
* [[Piece-Square Tables]]
=Forum Posts=
==2018==
* [http://www.talkchess.com/forum3/viewtopic.php?t=67890 Introducing Igel chess engine] by [[Volodymyr Shcherbyna]], [[CCC]], July 03, 2018==2020==* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67890&start=15 Re: Introducing Igel chess engine - Igel 2.5.0] by [[Volodymyr Shcherbyna]], [[CCC]], June 15, 2020: [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67890&start=16 Re: Introducing Igel chess engine - Igel 2.6.0] by [[Volodymyr Shcherbyna]], [[CCC]], August 01, 2020: [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67890&start=17 Re: Introducing Igel chess engine - Igel and NNUE] by [[Volodymyr Shcherbyna]], [[CCC]], August 19, 2020* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=74837 Night Nurse 0.2] by [[Dietrich Kappe]], [[CCC]], August 19, 2020* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67890&start=91 Re: Introducing Igel chess engine - Igel 2.9.0] by [[Volodymyr Shcherbyna]], [[CCC]], December 25, 2020
=External Links=
[[Category:X64]]
[[Category:PC]]
[[Category:NNUE]]
[[Category:OpenBench]]
[[Category:Windows]]
[[Category:Mammal]]
