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Loki
,Created page with "'''Home * Engines * Loki''' FILE:Processed SAM loki.jpg|border|right|thumb|240px| Loki with a fishing net <ref>[https://commons.wikimedia.org/wiki/File:Pr..."
'''[[Main Page|Home]] * [[Engines]] * Loki'''
[[FILE:Processed SAM loki.jpg|border|right|thumb|240px| Loki with a fishing net <ref>[https://commons.wikimedia.org/wiki/File:Processed_SAM_loki.jpg Loki with a fishing net], A Norse mythology image from the 18th century Icelandic manuscript "SÁM 66", now in the care of the [https://en.wikipedia.org/wiki/%C3%81rni_Magn%C3%BAsson_Institute_for_Icelandic_Studies Árni Magnússon Institute for Icelandic Studies], [https://en.wikipedia.org/wiki/Loki Loki from Wikipedia], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Loki''',<br/>
an [[UCI]] compliant [[:Category:Open Source|open source chess engine]] by [[Niels Abildskov]], written in [[Cpp|C++ 17]], first released in February 2021 <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=91 Re: New engine releases & news 2021] (Loki 1.0.2) by [[Niels Abildskov]], [[CCC]], February 21, 2021</ref>.
The author reports progress on Loki in an own [[CCC]] forum thread <ref name="progess">[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77105 Progress on Loki] by [[Niels Abildskov]], [[CCC]], April 16, 2021</ref>.
=Features=
<ref>[https://github.com/BimmerBass/Loki GitHub - BimmerBass/Loki - C++17 chess engine]</ref> <ref name="progess" />
==[[Board Representation]]==
* [[Bitboards]]
* [[Magic Bitboards]]
==[[Search]]==
* [[Lazy SMP]]
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Alpha-Beta]] ([[Fail-Hard]])
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Move Ordering]]
** [[PV-Move]]
** [[Internal Iterative Deepening]]
** [[Captures]] by [[MVV-LVA|MVV/LVA]]
** [[Static Exchange Evaluation]]
** [[Killer Heuristic]]
** [[History Heuristic]]
** [[Countermove Heuristic]]
* [[Selectivity]]
** [[Mate Distance Pruning]]
** [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]]
** [[Futility Pruning#Extendedfutilitypruning|Extended Futility Pruning]]
** [[Reverse Futility Pruning]]
** [[Razoring]]
** [[Late Move Reductions]]
** [[Futility Pruning#MoveCountBasedPruning|Late Move Pruning]]
** [[Check Extensions]]
** [[Quiescence Search]]
** [[Static Exchange Evaluation|SEE Pruning]]
** [[Delta Pruning]]
==[[Evaluation]]==
* [[SPSA]] [[Texel's Tuning Method]]
* [[Tapered Eval]]
* [[Material]]
* [[Piece-Square Tables]]
* [[Mobility#Safe Mobility|Safe Mobility]]
* [[Pawn Structure]]
* [[Passed Pawn]]
* [[King Safety]]
=See also=
* [[Copper]]
* [[Freyr]]
* [[Thor's Hammer]]
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=91 Re: New engine releases & news 2021] (Loki 1.0.2) by [[Niels Abildskov]], [[CCC]], February 21, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=139 Re: New engine releases & news 2021] (Loki 2.0.0) by [[Niels Abildskov]], [[CCC]], March 11, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=215 Re: New engine releases & news 2021] (Loki 3.0) by [[Niels Abildskov]], [[CCC]], April 13, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77105 Progress on Loki] by [[Niels Abildskov]], [[CCC]], April 16, 2021
=External Links=
==Chess Engine==
* [https://github.com/BimmerBass/Loki GitHub - BimmerBass/Loki - C++17 chess engine]
* [https://ccrl.chessdom.com/ccrl/404/cgi/compare_engines.cgi?family=Loki&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Loki] in [[CCRL|CCRL Blitz]]
==Misc==
* [https://en.wiktionary.org/wiki/Loki Loki - Wiktionary]
* [https://en.wikipedia.org/wiki/Loki Loki from Wikipedia]
* [https://en.wikipedia.org/wiki/Loki_(disambiguation) Loki (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Loki_(comics) Loki (comics) from Wikipedia]
* [https://en.wikipedia.org/wiki/Modern_C%2B%2B_Design#Loki_library Modern C++ Design - Loki library from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Open Source]]
[[Category:UCI]]
[[Category:PC]]
[[Category:Linux]]
[[Category:Windows]]
[[Category:X64]]
[[Category:Comics]]
[[Category:Mythology]]
[[FILE:Processed SAM loki.jpg|border|right|thumb|240px| Loki with a fishing net <ref>[https://commons.wikimedia.org/wiki/File:Processed_SAM_loki.jpg Loki with a fishing net], A Norse mythology image from the 18th century Icelandic manuscript "SÁM 66", now in the care of the [https://en.wikipedia.org/wiki/%C3%81rni_Magn%C3%BAsson_Institute_for_Icelandic_Studies Árni Magnússon Institute for Icelandic Studies], [https://en.wikipedia.org/wiki/Loki Loki from Wikipedia], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Loki''',<br/>
an [[UCI]] compliant [[:Category:Open Source|open source chess engine]] by [[Niels Abildskov]], written in [[Cpp|C++ 17]], first released in February 2021 <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=91 Re: New engine releases & news 2021] (Loki 1.0.2) by [[Niels Abildskov]], [[CCC]], February 21, 2021</ref>.
The author reports progress on Loki in an own [[CCC]] forum thread <ref name="progess">[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77105 Progress on Loki] by [[Niels Abildskov]], [[CCC]], April 16, 2021</ref>.
=Features=
<ref>[https://github.com/BimmerBass/Loki GitHub - BimmerBass/Loki - C++17 chess engine]</ref> <ref name="progess" />
==[[Board Representation]]==
* [[Bitboards]]
* [[Magic Bitboards]]
==[[Search]]==
* [[Lazy SMP]]
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Alpha-Beta]] ([[Fail-Hard]])
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Move Ordering]]
** [[PV-Move]]
** [[Internal Iterative Deepening]]
** [[Captures]] by [[MVV-LVA|MVV/LVA]]
** [[Static Exchange Evaluation]]
** [[Killer Heuristic]]
** [[History Heuristic]]
** [[Countermove Heuristic]]
* [[Selectivity]]
** [[Mate Distance Pruning]]
** [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]]
** [[Futility Pruning#Extendedfutilitypruning|Extended Futility Pruning]]
** [[Reverse Futility Pruning]]
** [[Razoring]]
** [[Late Move Reductions]]
** [[Futility Pruning#MoveCountBasedPruning|Late Move Pruning]]
** [[Check Extensions]]
** [[Quiescence Search]]
** [[Static Exchange Evaluation|SEE Pruning]]
** [[Delta Pruning]]
==[[Evaluation]]==
* [[SPSA]] [[Texel's Tuning Method]]
* [[Tapered Eval]]
* [[Material]]
* [[Piece-Square Tables]]
* [[Mobility#Safe Mobility|Safe Mobility]]
* [[Pawn Structure]]
* [[Passed Pawn]]
* [[King Safety]]
=See also=
* [[Copper]]
* [[Freyr]]
* [[Thor's Hammer]]
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=91 Re: New engine releases & news 2021] (Loki 1.0.2) by [[Niels Abildskov]], [[CCC]], February 21, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=139 Re: New engine releases & news 2021] (Loki 2.0.0) by [[Niels Abildskov]], [[CCC]], March 11, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76209&start=215 Re: New engine releases & news 2021] (Loki 3.0) by [[Niels Abildskov]], [[CCC]], April 13, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77105 Progress on Loki] by [[Niels Abildskov]], [[CCC]], April 16, 2021
=External Links=
==Chess Engine==
* [https://github.com/BimmerBass/Loki GitHub - BimmerBass/Loki - C++17 chess engine]
* [https://ccrl.chessdom.com/ccrl/404/cgi/compare_engines.cgi?family=Loki&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Loki] in [[CCRL|CCRL Blitz]]
==Misc==
* [https://en.wiktionary.org/wiki/Loki Loki - Wiktionary]
* [https://en.wikipedia.org/wiki/Loki Loki from Wikipedia]
* [https://en.wikipedia.org/wiki/Loki_(disambiguation) Loki (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Loki_(comics) Loki (comics) from Wikipedia]
* [https://en.wikipedia.org/wiki/Modern_C%2B%2B_Design#Loki_library Modern C++ Design - Loki library from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Open Source]]
[[Category:UCI]]
[[Category:PC]]
[[Category:Linux]]
[[Category:Windows]]
[[Category:X64]]
[[Category:Comics]]
[[Category:Mythology]]
