Difference between revisions of "Felicity Tablebases"
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'''Felicity Tablebases''',<br/> | '''Felicity Tablebases''',<br/> | ||
are open source endgame tablebases in C++ for chess, [[Chinese Chess|Xiangqi]] and [[Jeiqi]] developed by [[Pham Hong Nguyen|Nguyen Pham]], providing some popular metrics such as [[Endgame Tablebases#DTM|depth to mate]] and [[Endgame Tablebases#DTC|depth to convert]] information. First published in 2018, it supported only Xiangqi at that time and it used a special compression algorithm to create and run with a very small-size EGTB. In April 2024, Nguyen Pham restarted the project, rewrote the whole code, added the generator, and supported chess, Xiangqi and Jeiqi. | are open source endgame tablebases in C++ for chess, [[Chinese Chess|Xiangqi]] and [[Jeiqi]] developed by [[Pham Hong Nguyen|Nguyen Pham]], providing some popular metrics such as [[Endgame Tablebases#DTM|depth to mate]] and [[Endgame Tablebases#DTC|depth to convert]] information. First published in 2018, it supported only Xiangqi at that time and it used a special compression algorithm to create and run with a very small-size EGTB. In April 2024, Nguyen Pham restarted the project, rewrote the whole code, added the generator, and supported chess, Xiangqi and Jeiqi. | ||
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| + | The name Felicity is inspired by the song Felicità by Al Bano & Romina Power<ref>[https://www.youtube.com/watch?v=xUj-lfx6vbo Al Bano & Romina Power - Felicità (Musikladen 11.03.1982)]</ref>. | ||
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=Progress reports= | =Progress reports= | ||
| − | Felicity is | + | Felicity Tablebase is not a ready-to-use one but a work in progress for studying/researching. It is not stuck immediately to specific things such as metrics, board presentations, algorithms for compressing, or backward/forward generators. Instead, it tries testing as much as possible with multiple options to find the best ones. Not every attempt/work is successful. The project creates reports on some forums to report all attempts, works and results. |
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=License= | =License= | ||
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=External Links= | =External Links= | ||
| − | * [https://github.com/nguyenpham/FelicityEgtb GitHub - nguyenpham/FelicityEgtb] by | + | * [https://github.com/nguyenpham/FelicityEgtb GitHub - nguyenpham/FelicityEgtb] by [[Pham Hong Nguyen|Nguyen Pham]] |
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: {{#evu:https://www.youtube.com/watch?v=xUj-lfx6vbo|alignment=left|valignment=top}} | : {{#evu:https://www.youtube.com/watch?v=xUj-lfx6vbo|alignment=left|valignment=top}} | ||
Latest revision as of 08:22, 30 June 2024
Home * Knowledge * Endgame Tablebases * Felicity Tablebases
Felicity Tablebases,
are open source endgame tablebases in C++ for chess, Xiangqi and Jeiqi developed by Nguyen Pham, providing some popular metrics such as depth to mate and depth to convert information. First published in 2018, it supported only Xiangqi at that time and it used a special compression algorithm to create and run with a very small-size EGTB. In April 2024, Nguyen Pham restarted the project, rewrote the whole code, added the generator, and supported chess, Xiangqi and Jeiqi.
The name Felicity is inspired by the song Felicità by Al Bano & Romina Power[1].
Progress reports
Felicity Tablebase is not a ready-to-use one but a work in progress for studying/researching. It is not stuck immediately to specific things such as metrics, board presentations, algorithms for compressing, or backward/forward generators. Instead, it tries testing as much as possible with multiple options to find the best ones. Not every attempt/work is successful. The project creates reports on some forums to report all attempts, works and results.
License
It is an open-source, published with an MIT license.
See also
- Bitbases
- Edwards' Tablebases
- Gaviota Tablebases
- Lomonosov Tablebases
- Nalimov Tablebases
- Scorpio Bitbases
- Syzygy Bases
- Thompson's Databases
Forum Posts
- A new design for Xianqgi (Chinese Chess) Endgame Tablebase by Nguyen Pham, CCC, January 16, 2018
- Progress reports by Nguyen Pham, April 16, 2024
- Felicity EGTB generators and probers by Nguyen Pham, CCC, April 20, 2024
