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How good are it for the money it cost to buy it.

https://chess.massimilianogoi.com/shop/goiopeningbook/

Not better than cubai or other free alternatives.

I have an older version of this. It is quite selective: not a lot of variety in the lines played, but it will steer into lines it thinks are good. There are equally good alternatives. If you are going to spend money on something, I'd recommend the Hiarcs opening book, which is quite large and updated quarterly. Also useful are the Chessbase Power Books for specific openings, e.g. Najdorf.

--Jon

No Hiarcs or PowerBook can compete with my books in terms of quality of the moves mostly because they include human games while my works include only top games from Stockfish machines with alot of cores (some rare exception with mixed tournaments where the players use Lc0 or the latest Komodo, but we are alking of the 0.1% of the games).

And yes, the Goi books are quite selective so if you're searching for variety you'd better look for alternatives like the two mentioned above or The Oak (still 15$) as soon as I open the shop again. url: https://chess.massimilianogoi.com/shop/theoak/

The Oak is most probably the book with more variants other than Fauzi, being sized 3 gigabytes (Fauzi is 9).

There is no match for the cubail's books against the Goi book competition machines edition, the only active book producer at my level is DON, but his book costs more than mines, although he makes alot more updates.

Fres opening book is leader in book rating list of Sedat Canbaz.

Rating list:
https://sites.google.com/site/computers ... book-cs-36

It is not too selective, nor is it bloated. Very current, everything new is in it. Great work.

Download:

http://www.solidfiles.com/v/e6Zknq3GLWPAZ

Final tournament for Goi 6.2.3:

Time per game: 5 minutes
Processor: AMD E2-3800 CPU, 2 threads for each engine
Hashtable size: 128 MBs
Engine used: Stockfish Polyglot 2020-04-24, contempt: 0
Permanent brain (ponder): OFF
Interface used: Fritz 17.

Settings Goi 6.2.3: Tournament book checked, Minimum games 0, Up to move 50, Variety of play 50, Influence of learn value 100, Learning strength 500.
Settings Vitamin20_CTG_ed13_22apr2020_depth40: Tournament book checked, Minimum games 0, Up to move 40, Variety of play 121, Influence of learn value 100, Learning strength 0.
Settings DON180420: Tournament book checked, Minimum games 0, Up to move 100, Variety of play 50, Influence of learn value 100, Learning strength 500.
Settings Fres: Tournament book checked, Minimum games 0, Up to move 100, Variety of play 50, Influence of learn value 100, Learning strength 500.
Settings Hiarcs14zhBook: Tournament book checked, Minimum games 0, Up to move 50, Variety of play 50, Influence of learn value 100, Learning strength 500.
Settings PowerBook2020: Tournament book checked, Minimum games 0, Up to move 50, Variety of play 50, Influence of learn value 100, Learning strength 500.



Goi 6.2.3 vs Don Lite 2:

Time per game: 1+1 minutes (1 minute plus 1 second for any move)
Processor: AMD E2-3800 CPU, 2 threads for each engine
Hashtable size: 128 MBs
Engine used: Stockfish Polyglot 2020-05-15, contempt: 0
Permanent brain (ponder): OFF
Interface used: Fritz 17.

Settings Goi 6.2.3: Tournament book checked, Minimum games 0, Up to move 50, Variety of play 50, Influence of learn value 100, Learning strength 500.
Settings DON Lite 2: "Optimize and up to move 100".



Games here
https://chess.massimilianogoi.com/benchmarks/.


Goi 6.2.3 is now on sale https://chess.massimilianogoi.com/shop/goiopeningbook/

Ovyron wrote: ↑Thu Apr 02, 2020 2:35 am Not better than cubai or other free alternatives.

Where can I download this cubai book? Preferable in ctg and bin format.

Jonathan003 wrote: ↑Sun May 17, 2020 4:25 pm Where can I download this cubai book? Preferable in ctg and bin format.

His bin book:

http://www.solidfiles.com/v/mDpymvWRV8VDq

He has also released 2 other books, Klasman:

https://www.mirrored.to/files/6ESB2V5C/ ... .rar_links

And Burak (some 1.8GB book o_O):

https://anonfile.com/Xcydmewcob/Burak_rar

Source.

And... he released Cevdet-X.bin, but this was only for a limited time, and now the only way to get it is to log in to this forum and download the attachment. Which I've found impossible because they use Russian Captchas o_O;

Cubail's ctg book Cevdet:

https://www.mirrored.to/files/1TS7W43Q/Cevdet.rar_links

1. Tournament ON
2. Min games 0-100
3. Variety of play 50%
4. Influence of learn 100%
5. Learning strength 100%

Source. (<- he has other eco specific and other specific tourney books there)

Ovyron wrote: ↑Sun May 17, 2020 6:13 pm

Jonathan003 wrote: ↑Sun May 17, 2020 4:25 pm Where can I download this cubai book? Preferable in ctg and bin format.

His bin book:

http://www.solidfiles.com/v/mDpymvWRV8VDq

He has also released 2 other books, Klasman:

https://www.mirrored.to/files/6ESB2V5C/ ... .rar_links

And Burak (some 1.8GB book o_O):

https://anonfile.com/Xcydmewcob/Burak_rar

Source.

And... he released Cevdet-X.bin, but this was only for a limited time, and now the only way to get it is to log in to this forum and download the attachment. Which I've found impossible because they use Russian Captchas o_O;

Cubail's ctg book Cevdet:

https://www.mirrored.to/files/1TS7W43Q/Cevdet.rar_links

1. Tournament ON
2. Min games 0-100
3. Variety of play 50%
4. Influence of learn 100%
5. Learning strength 100%

Source. (<- he has other eco specific and other specific tourney books there)

Thanks for the links. I also tried to make an account to download the Cevdet-X.bin book, without any luck. We will need someone ho understand Russian.

Jonathan003 wrote: ↑Mon May 18, 2020 12:47 am I also tried to make an account to download the Cevdet-X.bin book, without any luck. We will need someone ho understand Russian.

Here's a mirror courtesy of Scorpio

https://dropmefiles.com/C0gLk

Link will expire in 13 days. [Edit - Mirror for people without access to dropmefiles https://share-online.is/B5230b07o2/Cevdet-X_rar ] If someone from the future is interested I'll create another mirror by then.