The Week in Chess

Tuesday, October 18, 2016

Fishbook Official Opening Books released

Announcing the official release of Fishbook opening books today, October 18, 2018.

This is the fruit of 3 months endeavor to have a chess engine opening book that will be suitable to engage BrainFish/Cerebellum pair in a fair play of engine vs. engine match in a rating list production environment. The positive results against Cerebellum and Fauzi 2.2 made the official release early.


BOOK NAME DEPTH POSITIONS REMARKS
Fishbook Neutral 161018 10 334,258 Engine vs. Engine
Fishbook Active 161018 15 1,190,285 Engine vs. Engine
Fishbook Dynamic 161018 30 8,308,656 Book vs. Book

Fishbook Neutral is suited for engine vs. engine match with up to 10 moves depth. Both white and black had 50% chance of winning. The positions had been filtered to include only draws from the PGN collection with 30cp threshold. The opening book consists mainly of the popular primary 4 first moves such as e4, d4, c4 and Nf3 avoiding the less familiar openings that has the least chance of success. Fishbook Neutral depth should be set 5 or lower for fair play. Greater depth will favor the weaker engine as the position is equal and will lead to a higher probability of draw.

Fishbook Active is also a neutral book similar to Fishbook Neutral but it is deeper with 15 moves depth. White has at most 51% better chance of winning. This will be useful when a user is bored with the drawish end positions of Fishbook Neutral. In addition to the 4 popular opening moves, 4 more were added such as g3, b3, Nc3 and f4 to have more choices but these are set to zero priority as default. The user has greater option to control the choice of opening moves by changing the settings in the Arena book settings menu such as priority, number of games, winning percentage and others. Fishbook Active could defeat other neutral opening books such as Perfect 2016 by Sedat Canbaz.

Fishbook Dynamic is definitely a BrainFish/Cerebellum neutralizer by design. Its modest goal is just to level the game to 50%-50% making BrainFish behave like Stockfish, but the results were more than that was hoped for. The book is limited to 30 moves depth which is much lesser compared to  Cerebellum with 36 moves depth and Fauzi which has more than 100 moves depth! The Fishbook Dynamic is primarily suited for rating list tournaments against BrainFish/Cerebellum but could be used in book vs. book matches. Aside from Cerebellum and Fauzi 2.2, it also defeated HS-Grandbook by Harry Schnapp, Dan Corbitt's Superbook, Quisinsky Special and Tomcat by Adit Tangsel in earlier tests.

Here is the fresh result of the game between the latest versions of Fishbook Dynamic and Cerebellum r52:

Fishbook Dynamic 161018 Goby vs. Brain Fish 161009 Cerebellum r52 - 100R 1M1S
RankEngineScoreFiBrS-B
1Fishbook 161018 Goby53.5/100· ·· ··9-2-89 2487.75 
2Brain Fish 161009 46.5/1002-9-89· ·· ·· 2487.75 


100 games played / Tournament finished

Tournament start: 2016.10.18, 14:37:59
Latest update: 2016.10.18, 16:33:52
Site/ Country: ChessOwl, United States of Russia
Level: Blitz 1/1
Hardware: AMD A8-5600K APU with Radeon (tm) HD Graphics, 8.0 GB Memory
Operating system: Linux 4.7.3-pclos1 64bit
Table created with: Arena 3.5.1

Download Fishbook Dynamic 161018 here.
Download Cerebellum r52 here.
Download the match  PGN games here.

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