Difference between revisions of "Fizbo"

From Chessprogramming wiki
Jump to: navigation, search
 
(One intermediate revision by the same user not shown)
Line 15: Line 15:
  
 
==Fizbo 2==
 
==Fizbo 2==
Fizbo '''2''' was released in December 21, 2017 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=66090 Fizbo 2 has been released] by [[Youri Matiounine]], [[CCC]], December 21, 2017</ref>, and is apparently the last version by [[Youri Matiounine]], who stopped working on the engine, and decided to release his source code on [https://en.wikipedia.org/wiki/GitHub GitHub] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72021 Fizbo 2 sources just got released] by Damir, [[CCC]], October 06, 2019</ref> <ref>[https://github.com/MoonstoneLight/Fizbo-Chess GitHub - MoonstoneLight/Fizbo-Chess: Original codes of Fizbo Chess]. Thanks to original author [[Youri Matiounine]]</ref> nearly two years later, including a two-layer [[Neural Networks|neural network]] based [[Evaluation|evaluation]] with optional [[AVX2]] intrinsics <ref>[https://github.com/MoonstoneLight/Fizbo-Chess/blob/master/nn2.cpp Fizbo-Chess/nn2.cpp at master · MoonstoneLight/Fizbo-Chess · GitHub]</ref>.
+
Fizbo '''2''' was released in December 21, 2017 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=66090 Fizbo 2 has been released] by [[Youri Matiounine]], [[CCC]], December 21, 2017</ref>, and is apparently the last version by [[Youri Matiounine]], who stopped working on the engine, and decided to release his source code on [https://en.wikipedia.org/wiki/GitHub GitHub] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72021 Fizbo 2 sources just got released] by Damir, [[CCC]], October 06, 2019</ref> <ref>[https://github.com/MoonstoneLight/Fizbo-Chess GitHub - MoonstoneLight/Fizbo-Chess: Original codes of Fizbo Chess]. Thanks to original author [[Youri Matiounine]]</ref> nearly two years later, featuring a two-layer [[Neural Networks|neural network]] based [[Evaluation|evaluation]] with optional [[AVX2]] intrinsics <ref>[https://github.com/MoonstoneLight/Fizbo-Chess/blob/master/nn2.cpp Fizbo-Chess/nn2.cpp at master · MoonstoneLight/Fizbo-Chess · GitHub]</ref>.
  
 
=Forum Posts=
 
=Forum Posts=
Line 36: Line 36:
 
* [http://www.talkchess.com/forum/viewtopic.php?t=62677 Fizbo 1.9 released] by [[Youri Matiounine]], [[CCC]], December 31, 2016
 
* [http://www.talkchess.com/forum/viewtopic.php?t=62677 Fizbo 1.9 released] by [[Youri Matiounine]], [[CCC]], December 31, 2016
 
==2017 ...==
 
==2017 ...==
 +
* [http://www.talkchess.com/forum3/viewtopic.php?t=65466&start=7 Re: Tapered Eval between 4 phases] by [[Youri Matiounine]], [[CCC]], October 16, 2017 » [[Tapered Eval]], [[AVX]]
 
* [http://www.talkchess.com/forum/viewtopic.php?t=66090 Fizbo 2 has been released] by [[Youri Matiounine]], [[CCC]], December 21, 2017
 
* [http://www.talkchess.com/forum/viewtopic.php?t=66090 Fizbo 2 has been released] by [[Youri Matiounine]], [[CCC]], December 21, 2017
 
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72021 Fizbo 2 sources just got released] by Damir, [[CCC]], October 06, 2019
 
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72021 Fizbo 2 sources just got released] by Damir, [[CCC]], October 06, 2019
 +
==2020 ...==
 +
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=73769 Bug in Fizbo 2] by [[Kurt Utzinger]], [[CCC]], April 26, 2020
  
 
=External Links=
 
=External Links=

Latest revision as of 19:15, 15 July 2020

Home * Engines * Fizbo

Fizbo,
a Chess Engine Communication Protocol, and since version 1.5, UCI compliant [1] chess engine by Youri Matiounine - in October 2019 Fizbo 2 became open source. Fizbo was first released in May 2014 [2], apparently bitboard based, requiring x86-64 bitscan forward [3] and taking advantage from population count instruction. Since version 1.2, Fizbo performs a parallel search based on a version of enhanced PV splitting algorithm, only one split-point is active at a time, along with iterative deepening, since 1.3 with aspiration windows. Syzygy Bases with up to five pieces were used since version 1.4 released in May 2015. The transposition table with dense 8 byte entries is used also in quiescence search [4].

Further Versions

Fizbo 1.7

Fizbo 1.7, released in March 2016, improved in evaluation due to changed and new features, including pawn pattern, considering all possible combinations of two pawns of the same color [5], and further supports 6-piece Syzygy Bases.

Fizbo 1.8

Fizbo 1.8 in August 2016 came with a BMI2 executable, improved pondering logic, reworked parallel search logic, and multiple small changes to search and evaluation [6].

Fizbo 1.9

Fizbo 1.9, released on December 31, 2016, further enhanced considerably due to extensive changes and new features in evaluation [7].

Fizbo 2

Fizbo 2 was released in December 21, 2017 [8], and is apparently the last version by Youri Matiounine, who stopped working on the engine, and decided to release his source code on GitHub [9] [10] nearly two years later, featuring a two-layer neural network based evaluation with optional AVX2 intrinsics [11].

Forum Posts

2014

2015

2016

2017 ...

2020 ...

External Links

Chess Engine

Misc

References

Up one Level