Difference between revisions of "Orion"
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* [[BMI2#PEXTBitboards|BMI2 - PEXT Bitboards]] | * [[BMI2#PEXTBitboards|BMI2 - PEXT Bitboards]] | ||
==[[Search]]== | ==[[Search]]== | ||
| + | * [[Lazy SMP]] (0.9) | ||
* [[Iterative Deepening]] | * [[Iterative Deepening]] | ||
* [[Aspiration Windows]] | * [[Aspiration Windows]] | ||
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* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75870&start=19 Re: You've trained a brilliant NN(UE) King-Piece Network. Now what?] by [[David Carteau]], [[CCC]], November 19, 2020 » [[NNUE]] | * [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75870&start=19 Re: You've trained a brilliant NN(UE) King-Piece Network. Now what?] by [[David Carteau]], [[CCC]], November 19, 2020 » [[NNUE]] | ||
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75953 Orion 0.8 + The Cerebrum release] by [[David Carteau]], [[CCC]], December 01, 2020 | * [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75953 Orion 0.8 + The Cerebrum release] by [[David Carteau]], [[CCC]], December 01, 2020 | ||
| + | * [https://www.talkchess.com/forum3/viewtopic.php?f=2&t=79673 Orion 0.9 release] by [[David Carteau]], [[CCC]], April 12, 2022 | ||
=External Links= | =External Links= | ||
Latest revision as of 15:16, 13 April 2022
Orion Constellation [1]
Orion,
an UCI compliant chess engine by David Carteau, written in C and first released in May 2014.
In August 2020, David Carteau published results using an own AVX2 NNUE implementation, initially compatible with Stockfish NNUE nets,
with a huge improvement in playing strength [2]. He has designed and trained his own NNUE-like approach published as Cerebrum open source library on GitHub [3], first used within Orion 0.8, released in December 2020 [4].
Contents
Features
Board Representation
Search
- Lazy SMP (0.9)
- Iterative Deepening
- Aspiration Windows
- Alpha-Beta
- Principal Variation Search
- Transposition Table
- Selectivity
- Move Ordering
Evaluation
- NNUE (0.7.nnue)
- NNUE-like Cerebrum (0.8)
- Automated Tuning by Linear Regression using Python scikit-learn (0.6) [6]
- Automated Tuning by PBIL (pre 0.6)
- Pawn Structure
- Isolated Pawns etc ...
- Passed Pawns
- Mobility
- Square Control
- Space
- King Safety
- Attacking King Zone
Misc
- Syzygy Bases (removed in 0.8)
Forum Posts
2014 ...
- New free engine - Orion by Graham Banks, CCC, May 24, 2014
- New Orion release : v0.3 ! by David Carteau, CCC, April 03, 2016
- New Orion release : v0.4 ! by David Carteau, CCC, October 15, 2017
- New Orion release : v0.5 ! by David Carteau, CCC, June 21, 2018
- New Orion release : v0.6 ! by David Carteau, CCC, June 01, 2019
2020 ...
- Orion 0.7 release by David Carteau, CCC, July 04, 2020
- Orion 0.7 : NNUE experiment by David Carteau, CCC, August 19, 2020
- Re: You've trained a brilliant NN(UE) King-Piece Network. Now what? by David Carteau, CCC, November 19, 2020 » NNUE
- Orion 0.8 + The Cerebrum release by David Carteau, CCC, December 01, 2020
- Orion 0.9 release by David Carteau, CCC, April 12, 2022
External Links
Chess Engine
- Orion UCI chess engine
- GitHub - david-carteau/cerebrum: The Cerebrum library
- Orion (Schachprogramm) – Wikipedia.de (German)
- Orion in CCRL Blitz
Misc
- Orion from Wikipedia
- Orion (mythology) from Wikipedia
- Orion (constellation) from Wikipedia
- Orion (comics) from Wikipedia
- Orion (sculpture) from Wikipedia » University of Michigan
- Steps Ahead - Orion, Yin-Yang (1992), YouTube Video
- lineup: Mike Mainieri, Steve Smith, Jeff Andrews, Bendik Hofseth, Rachel Z
References
- ↑ deep sky image of the constellation Orion by Mouser, December 14, 2004, Wikimedia Commons
- ↑ Orion 0.7 : NNUE experiment by David Carteau, CCC, August 19, 2020
- ↑ GitHub - david-carteau/cerebrum: The Cerebrum library
- ↑ Orion 0.8 + The Cerebrum release by David Carteau, CCC, December 01, 2020
- ↑ based on Orion UCI chess engine
- ↑ 1.1. Linear Models — scikit-learn 0.23.2 documentation
