Author: Jorge Pichard
Date: 14:25:02 07/20/04
Go up one level in this thread
On July 20, 2004 at 16:30:36, Günther Simon wrote:
>On July 20, 2004 at 16:10:15, Uri Blass wrote:
>
>>On July 20, 2004 at 15:53:38, Jorge Pichard wrote:
>>
>>
>>>
>>>[Event "Arena tournament"]
>>>[Site "S0025128408"]
>>>[Date "2004.07.20"]
>>>[Round "14"]
>>>[White "Tcb0052"]
>>>[Black "Jonny 2.64"]
>>>[Result "1-0"]
>>>[ECO "C03/04"]
>>>[Opening "French"]
>>>[Time "12:21:05"]
>>>[Variation "Tarrasch (3...Be7)"]
>>>[TimeControl "1800+0"]
>>>[Termination "normal"]
>>>[PlyCount "98"]
>>>[WhiteType "program"]
>>>[BlackType "program"]
>>>
>>>1.e4 e6 2.d4 d5 3.Nd2 Be7 4.Ngf3 Nf6 5.e5 Nfd7 6.Bd3 c5 7.c3 b6 8.Qe2 a5
>>>
>>>9.c4
>>>Bb7 10.cxd5 Bxd5 11.Be4 Bxe4 12.Qxe4 Na6 13.d5 exd5 14.Qxd5 Nb4 15.Qe4 Nf8
>>>
>>>16.a3
>>>Nd3+ 17.Ke2 Ne6 18.Nc4 Nxc1+ 19.Raxc1 O-O 20.Rhd1 Qc7 21.a4 Rad8 22.g3 Kh8
>>>
>>>23.Kf1 f5
>>>24.exf6 Rxf6 25.Rxd8+ Qxd8 26.Nce5 c4 27.Qxc4 Bc5 28.Qxe6 {+4.38/13 58}
>> Rxe6
>>>
>>>{-5.41/14
>>
>>These scores suggest that Harrry Schnapp book is excellent for the weaker player
>>because the weaker player may score some points easily if both sides are using
>>that book.
>>
>>I suspect that Jonny could score better even without a book.
>>
>>Uri
>
>I bet the book _setting_ is wrong...
>
>Günther
There is nothing wrong with the settings, simply Jonny is a program that play
great at longer time control, but not at shorter time control.
You can download it from here under Download underneath Tourney:
http://www.playwitharena.com/download/books/arena-mainbook-v02.zip
Here are the optimal settings, simply all you have to do is read and apply the
best settings:
Chapter #1
Hints for optimal use:
You can find more interesting hints in the Arena help on Arena book options!
"My recommendations in the Book menu".
· Use Arena’s mainbook:
Activate.
· Use transpositions:
Activate.
· Minimal conditions to play the move:
Not Activated (Numbers remain on "0").
It is also possible to have these values set to "1"
· Probability set by…:
Priority: Cursor can be arbitrarily set from - to +!
· Options of Priorities:
Game Notation window (to the right of the chessboard), click on the Book tab.
You will see the moves in the book and other detailed information. Now right
click in this window. You can fix priorities. The values 0-9 regulate how often
the move should actually be played.
· Number of games:
How important is the number of games in the playout preferences for you?
CURSOR should be of MAXIMUM, Hint by Harry: June, 19th, 2004.
· Win percentage:
If the cursor is at the left, this option is deactivated.
You can put in whether the win percentage affects the probability of move.
CURSOR should be of minimum, Hint by Harry: June 19th, 2004.
· Use book up to halfmove:
If you don’t wish for long variations a "Limit" can be set here.
If ALL Playout functions are switched off, lesser known variations are played
also.
Note:
Transpositions are only possible from Arena 1.09 onwards. Harry points out, that
this opening book can only be used to it’s fullest extent with Transpositions
(Note by Frank Quisinsky).
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Chapter #2
Supplementary Notes:
For Engine-Engine duels, the same book should be used for both engines, provided
no book or a considerably weaker book is provided with the engine. As an
alternative, both engines could play with two different Arena books. An engine
with a very extensive book should play the opening with the own library. In this
case you can switch the Arena mainbook on at the fullest depth.
If two extensive books alternating one on top of the other meet, there will be
either longer variations or shorter variations on a random basis. After only 4-5
ply, of course, a book will drive the other book until the first calculated
engine move. Chess remains a game of infinite possibilities. The material
balance remains and is independent from the length of the played out openings.
Maximum material difference is in rare cases a "half" pawn more. When ALL
Playout functions are turned off, including GAME NUMBERS and PRIORITY, then the
book plays randomly less known variations. In this case, a mixture between
classic, standard and very rarely played openings occurs. also in this case, the
positions reached remain even.
RECOMMENDABLE, ONLY IF BOTH ENGINES PLAY WITH THE SAME BOOK:
The length of openings are very different, mostly between 12 and 48 ply. In
addition, there are a small number of very short and very long variants (under
12 and/or over 48 ply). If an opening is not to be used, you can switch it off.
Example: King’s Gambit:
After the moves 1. e4 e5 you can in the opening book table (Game Notation
window, tab "Book") mark the white move "f4" with priority "0". Thus white 2. f4
is not played and accordingly black will not need to react to the King’s Gambit.
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Chapter #3
The formation of my work…
The first time I saw Arena 1.01, with the opening book functions by Martin Blume
and shortly afterwards the good PGN Random Database from Olivier Deville, I had
In the Arena Support Forum directed an appeal to Olivier for an *.abk Book
(Arena's Book format) to be produced.
When no satisfactory answer came, I thought to myself...
"Well then, I’ll give it a go. I have ample first class material, chess-theory
knowledge also. However, the book should be produced for approximately 150
Engines, so that no disadvantages originate for the Engines develop. It should
not matter, whether the opening book of the Engine Shredder, The King, Belzebub
or ColChess is used."
It was completely clear me that without an appropriate compromise this venture
could not be managed. But how should the compromise be made?
I got the idea by chance, as I observed a game between Shredder 7.04 and
Aristarch 4.37. Shredder chose a simple and known gambit opening from its
gigantic book with the sacrifice on the fifth move. Aristarch, known as a tough
defender, kept the material until into the endgame where Shredder recovered it
with difficulty. Immediately the notion came to me that top programs often have
problems playing out the opening with a material deficit. Therefore I have
shortened most gambit variations up to the key move and have left the engine the
decision, as to whether it sacrifices or not. Arithmetically it is practically
impossible, so that the sacrifice is not made in 98% of the cases!. Maybe Fritz
would now and then have had something to complain about, but that doesn't play
under Arena anyway and doesn't need my book. Consequently, I began my work, with
the attempt, to make a small book for engines between 1,700 and 2,700 ELO, from
PGN Data, which I had been in the habit of filtering for "very clean
variations".
I have been involved in this craziness, day by day, on average 9-10 hours, with
very good material, companion literature from around the world and valuable
unpublished collections of known authors, of which one is unfortunately no
longer alive.
Without help of my two sons, my spouse and even my sister who translated some
fantastic Russian chess literature, it would not have been possible to manage to
create so extensive a book in "only 6 1/2 months"! I am 70 years old, and at
this ripe age I think not necessarily always about money. Thanks to God, I am
looked after in my old age well and my effort is exclusively for the Arena
Project.
If my work recognized and is respected so much the better!
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Chapter #4
Copyright!
For this opening book and of course also other data on the Arena website our
Copyright conditions are valid. Another publication / distribution of the
opening book of Harry Schnapp is not allowed without authorisation of the
authors.
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Chapter #5
Download!
112.838 Variations, 992.974 Moves, Depth = 63 Ply!
Arena's Mainbook Version 2.0 (6.40Mb)Update Historie:
Note:
On the basis of this huge work by Harry Schnapp, we dedicate a separate area on
the website to this book.
You can find more Arena opening books by our Gladiators in User Files section.
Frank's Chess Page, Chess Award go to Harry Schnapp!
-----
Written by:
Harry Schnapp (Frankfurt, Deutschland)
Published by Frank Quisinsky (Schweich, Deutschland)
Translated by Christopher Conkie (Scotland)
Alterations are not allowed by Harry Schnapp!
June, 2004
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