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goi opening book version 4.2 Competition Edition:







Welcome to this new product, the elite of the chess opening books, its strength is unmatched.

Built using only Stockfish 9, CFish and asmFish on very powerful high-end rented servers, Goi 4.2 contains 9135882 opening positions, from the very beginning until sometimes the ending of the game.

In average you will reach 30-40 moves from the start (that is 60-80 plies).


Supported engines: Komodo, Houdini, Brainfish, CFish, asmFish, Raubfisch, Toltec, SugaR XPrO.









---->> Other benchmarks - <(last one Avril, 14 2018). <<----



You can buy the Goi opening book in your favourite format below even if you don't have a Paypal account: you will be redirected to the Paypal webframe interface, just use your normal (or virtual, best advice for internet) credit card.

If you are unsure: How to buy on Paypal without creating an account, read the article and you'll know how to do.

Delivery time: 1 minute - 8 hours, depending whether I am at my computer or not.




goi 4.2 CTG format: size 116 MB, price 12$.




goi 4.2 BIN format: size 139 MB, price 10$.








Goi opening books collection package: size 1.51 GB, price 50$.


Sincerely I don't see the point of this, but since someone's asking me this, there you go:

What you'll get with this package

- goi.bin (version 1)

- goi_competitions_edition.bin
- goi_light_edition.bin (version 2)

- goi.bin (version 2.1)

- goi2.2.bin (version 2.2)

- goi2.3.bin (version 2.3)

- goi3.bin (version 3)

- goi 3.1 abk
- goi 3.1 ctg
- goi 3.1 bin (version 3.1)

- goi 3.2 bin
- goi 3.2 ctg (version 3.2)

- goi 4 ctg
- goi 4 bin (version 4)

- goi 4.1 bin
- goi 4.1 ctg (version 4.1)

- goi 4.2 bin
- goi 4.2 ctg (version 4.2)






Annual subscription: price 60$.


With this option you will get updates for a whole entire year starting by the day you make the payment. I make in average two products per month (BIN and CTG) at the average price of 10$ for each, so it would be 10$ x 2 x 12 months = 240$, that's a big saving! Anyway I warmly advice to get this option after you have tried a few times my books and you're satisfied with.





How to install the BIN format on Chessbase softwares:



Tick 'OwnBook' and enter the full path of the file followed by its name plus its extension.
As example: the bin file is in the folder C:\Users\Bob\Documents\ChessBase\Books → you will have to enter the string C:\Users\Bob\Documents\ChessBase\Books\goi3.2.bin

Set the maximum possible of 'BookDepth' (if I recall correctly asmFish has 100, while Brainfish 255).




How to install the CTG format on Chessbase softwares:


Place the goi3.2.ctb, goi3.2.ctg and goi3.2.cto files into the same directory, then start your Chessbase program, such as Fritz and use what listed below on the 'Advanced' settings of the engine:

- Tick the Tournament book box

- Set Minimum games to 1

- Set Variety of play to the minimum (10 by now)

- Set Influence of learn value to the maximum (100 by now)

- Set Learning strength to the maximum (500 by now)


See the picture below:


ctg best settings




Openings and variants included in the book, sorted by the ECO index:


Tartakowers Flank Opening, Basman, Saragossa, Anderssen, Mieses Opening, French Attack, Grob's Attack, King's Indian Attack, Sleipner, Sokolsky Opening, Larsen Opening, Bird Opening, Queen's Fianchetto, Double Bird, King's Fianchetto, Sicilian-Bird, From's Gambit, Indo Bird, Dutch Attack, Leningrad Attack, Stonewall Attack, Grunfeld Indian Attack, Reti Opening, Accepted Reti, Benoni with White, Queen's Indian Attack, Reti-Slav, Unusual 3nd White, Mikenas - System, English, English Four Knights, Symmetrical English, Hedgehog, St. George/Basman, Owens Defence, Nimzowitsch, Scandinavian Defence, Modern Defence, Alekhine's Defence, Alekhine's Defence Chase Variation, Alekhine's Defence Modern Variation, Robatsch Modern Defence, Pirc Defence, Pirc Defence Czech Variation, Pirc Defence Fianchetto Variation, Pirc Defence Classical Variation, Pirc Defence Austrian Attack, Caro-Kann, Caro-Kann Exchange Variation, Caro-Kann Panov Variation, Caro-Kann Main Line, Caro-Kann Larsen-Bronstein, Caro-Kann Nimzowitsch, Caro-Kann Classical Variation, French Defense, French Defense Exchange Variation, French Defense Advance Variation, French Defense Tarrasch Variation, French Defense Classical Variation, French Defense Burn Variation, French Defense Classical Main Line, King's Gambit, King's Knight Games, The Petroff Defence, The Scotch Game, Three Knights Game, Spanish Four Knight Game, Giuoco Pianissimo, Closed Defence, The Classical Polerio Variation, Spanish (Ruy Lopez), Spanish Schliemann Variation, Spanish Classical Variation, Spanish Exchange Variation, Open Spanish, Closed Spanish, Spanish Main Line, Spanish Modern Chigorin Defence, Sicilian, Sicilian Grand Prix Attack, Sicilian Morra Gambit, Sicilian Alapin Variation, The Closed Sicilian, Sicilian Vinken Variation, Sicilian Spassky, Sicilian Classical Variation, Sicilian Rossolimo, Sicilian Accellerated Dragon, Sicilian Maroczy Bind, Sicilian Pelican Sveshnikov, Kan Variation, Taimanov, Dutch Defence, Dutch Defence Staunton Gambit, Dutch Defence Rubinstein, Dutch Defence Leningrad Variation, Moscow Variation, Sozin, Boleslavsky, Richter/Rauzer, The Dragon, Yugoslav Attack, Scheveningen, Keres Attack, Najdorf, Englung Gambit, Polish Defence, Nimzowitsch, French Indian, Tartakower System, Benoni, Blacmar-Diemer Gambit, Trompowsky Attack, Queen's Knight Opening, King's Knight's Openings, Queen's Bishop Openings, Torre System, Colle System, Queen's Gambit, The Slav, Queen's Gambit Accepted, Queen's Gambit Declined, Tarrasch Defence, Ragozin Variation, Semi-Tarrasch, Semi-Slav, Orthodox Variation, Indian Opening, Indian Opening Trompowsky Attack, Dory Opening, Old Indian Knight Game, Indian Knight Game, Queen's Indian Knight Game, King's Indian Knight Game, Torre Attack, London System, Fianchetto Variation, Budapest Gambit, Old Indian, Modern Benoni, Blumenfeld Gambit, Bogo-Indian, Nimzo-Indian, Neo-Saemisch, Kasparov Variation, Three Knights Variation, Spielmann, Saemisch Variation, Leningrad Variation, Alekhime/Euwe/Botvinnik, Zurich Variation, Noa Variation, Pirc Variation, Rubinstein Variation, Taimanov Variation, Huebner Variation, Grunfeld Defence, Russian System Accellerated, Smyslov's System, Full Center Satup, Accellerated Averbakh, The Kramer System, Makagonov System, Panno Variation






Chess engines:



What is the 2018 strongest #chess engine? LIVE!



Wanna get my book for free and even gain some money? Read here.



CFish: Updated Avril, 15 2018


CFish is a port of Stockfish written in plain C by Ronald de Man, first published on GitHub in July 2016. Possibly inspired by the asmFish project to speed up Stockfish using a programming language closer to the machine, the purpose of CFish is to explore possible optimization issues of C versus C++ compilers.

You will find the compiled and ready to use UCI programs for Windows 64-bit and one for Android, though I'm not sure whether this last one is working or not (the other CFish were tested also on another computer with a very different processor). Versions for Haswell CPUs, general 64-bit CPUs, modern computers, power PCs and a 64-bit standard executable, NUMA variants included.


WARNING: use the NUMA variants ONLY if you have more than one processor, as shown in the image:



You will need a software like 7Zip or WinRAR to extract the archive.




CFish GitHub page.




asmFish: Updated Avril, 15 2018


Based on a work of Mohammed Li, it was continued by Lyudmil Antonov. Includes: armfish, that is asmFish for Android (only 64 bit Androids, unluckily, so the newest ones), asmFish base version for standard CPUs, and the program mateFish. Supported platforms (all 64 bit): Windows, Linux, MacOS, Android. The standard version should work on 32-bit system too. Someone would be so kind to let me know it? Write me in the Contacts section.




Go to the Lyudmil Antonov's GitHub page to find all the executables.




Stockfish 9: Updated February, 18 2018


The official Stockfish 9 releases. Versions for Windows (32bit, 64bit, modern computers, Haswell CPUs also known as BMI2) and Linux (64bit, modern computers and Haswell CPUs), MacOS and Android (32bit, 64bit).


Stockfish 9


Stockfish GitHub page.






If you want to get the best app for your Android smartphone/tablet you must download Droidfish, by Peter Österlund. This app combines the strength of the new Stockfish 9 with the ease of use of a handling device. You can play against a Grand Master laying down on your couch or sit on your train place. With the Analyze mode you can also check your games and see where you made a mistake.


Download it on Google Play Store


You can also buy my opening book to get extreme performances, as long as installing the 3-4-5 pieces Syzygy tablebases.




Syzygy tablebases for ending games:


Syzygy tablebases are the latest and most reliable resource to enhance the speed and the computing precision of the endgames. In order to use them you must have a recent Chessbase chess program, the Droidfish app for android pr the free Arena GUI.
These databases are subdivided in two parts: the Syzygy for game endings up to 5 pieces, sized circa 1 GB, and the Syzygy for 6 pieces, subdivided in WDL (the main part, size 68.3 GB) and DTZ (checking the 50 moves rule, size 81.9 GB); total 150 GB.
EVERY tablebases, whether is the 3-4-5 pieces or the 6 pieces, must be run on a VERY FAST storage, like an SSD drive or an USB pen. The essential one is the 3-4-5 pieces database, so you can just buy an USB pen if you don't want or can't spend money to buy an expensive device like an SSD drive.
The fundamental part, both for mobiles and PCS is the 3-4-5 archive (direct link below), because of its relative light size it can be hosted on a clouding storage or even a website. Different facts are for the 6 MAN Syzygy (6 MAN = 6 pieces DTZ + WDL), being sized 150 GB you must download it by installing a torrent client (be aware of the unwanted programs they are asking at the installation process). The one I feel to suggest is Bittorrent.


Download: 3-4-5 pieces. <- Direct link



Download: 6 pieces (extract the torrent files from the zip archive then use a torrent software to download the tablebases).


Installation instruction:




Arena free chessboard:




Want to get a FREE chessboard after having downloaded a FREE, powerful chess engine above? Download Arena, it comes also with its own engines (weaker than asmFish, naturally), its own opening book (weaker than mine but good) and its own endings database. It's a marvellous complete tool for anyone wanting to play and study chess without to spend a coin. You can also use asmFish with it, of course. Multiplatform, for Windows and Linux.
In order to get this beautiful software you have to go on their website, link below.

-->>Click here to go to the Arena homepage<<--






This website had a great success especially for two persons (except me, of course), two Masters of chessprogramming and chess affictionados: Mr. Lyudmil Antonov and Mr. Thomas Zipproth; without them this website wouldn't have ever been maybe under the limelight. I want to thank also my father Giuseppe Goi who started me to everything (chess, computers since the Eighties) and my mom for always giving me financial support. I will be eternally grateful to these persons.

And I thank, of course, all the people of ALL the world using this website: United States, Russia, Germany, France, India, Indonesia, Italy, Turkey, Spain, Brazil, Hungary, United Kingdom, Philippines, Poland, Netherlands, Egypt, South Africa, Canada, Serbia, Czech Republic, Ukraine, Greece, Mexico, Romania, Portugal, Sweden, Croatia, Israel, Argentina, Saudi Arabia, Bangladesh, Finland, Slovakia, Peru, Austria, Belarus, Algeria, Iran, Bulgaria, Taiwan, Japan, Belgium, Singapore, Malaysia, China, Denmark, Venezuela, Australia, Switzerland, Pakistan, Macedonia, Kazakhstan, Tunisia, Chile, Hong Kong, Norway, Uzbekistan, Colombia, Slovenia, Dominican Republic, Morocco, Iraq, Qatar, Paraguay, Luxembourg, Estonia, Ghana, Lithuania, El Salvador, Madagascar, Ecuador, Jordan, Albania, South Korea, Cuba, Uruguay, Georgia, Yemen, Somalia, Nicaragua, Lebanon, Vietnam, Armenia, Thailand, Syria, Azerbaijan, United Arab Emirates, New Zealand, French Polynesia, Zambia, Bosnia and Herzegovina, Jamaica, Moldova, Ireland, Palestinian Territory, Sri Lanka, Sudan, Mauritius, Iceland, Kuwait, Ivory Coast, Zimbabwe, Mongolia, Botswana, Bhutan, Nepal, Latvia, Senegal, Honduras, Montenegro, Dominican Republic, Libya, Bahrain, Kenya, Cambodia, Myanmar, Barbados, Malta.


Top selling countries:


United States of America

Thank you
United Kingdom

Thank you





Terima kasih





Tak skal du have


South Africa






Takk skal du ha


Благодаря ти



Dank je




Teşekkür ederim




List of the 10 countries which downloaded more:

1. United States

2. Russia

3. Germany

4. Spain

5. Indonesia

6. France

7. Egypt

8. India

9. Turkey

10. Brazil