Author: Arturo Ochoa
Date: 18:56:39 03/28/05
Go up one level in this thread
On March 28, 2005 at 11:54:35, Jorge Pichard wrote: >87, FQ > >Harry Schnapp released today a new version from his very popular Arena Mainbook. > > Arena Mainbook (detail page, in English and German available) > >This opening book isn't from a PGN file. Harry Schnapp enter each variation in >his book by hand. He is working over one year on this opening book. Harry try to >optimize his opening book for all available chess engines. Critical gambit >openings wouldn't add. This opening book is really a sensation. Shredder 9.0 >produced on my PCs fantastic results with the book from Harry. If I compare the >results with the opening book by Sandro Necchi, the book by Harry produce an >higher Shredder performance (around 20 ELO). I will not say the book by Sandro >isn't good but many variants Shredder like are deactivated. > >Example: >ATL-2 results: Shredder is playing with Mainbook 4.5 by Harry Schnapp: > >Rating 1: All games from ATL-2 Systems 1 - 3 = 1460 games! >March 26th, 2005 (21:00 MEZ) > > Program Elo + - Games Score Av.Op. >Draws > > 1 Shredder 9.0 : 2750 29 29 420 71.9 % 2587 31.4 >% > 2 Gandalf 6.01 : 2645 28 27 420 56.2 % 2602 32.4 >% > 3 TheKing 3.33 Schumacher : 2621 28 28 400 51.7 % 2609 31.0 >% > 4 Ruffian 2.1.0 : 2606 29 29 380 48.6 % 2616 30.8 >% > 5 ProDeo 1.1 : 2605 29 29 380 48.4 % 2616 31.6 >% > 6 SlowChess Blitz WV : 2560 31 31 360 40.4 % 2628 28.1 >% > 7 SOS 5.1 for Arena : 2547 30 30 360 38.2 % 2630 32.5 >% > 8 Spike 0.9 : 2530 40 41 200 31.8 % 2663 33.5 >% >After 420 games the advantage to Gandalf 6.01 = 105 ELO !! >This games are produced with 40 moves in 20 minutes (still running ATL-2 >tourney). > > ATL League (more information, games, log files and so on) > >On my secret ATL-2a tournament (Athlon 2.8, Centrino 1.6) with Shredder Classic >GUI the different from Shredder 9.0 to Gandalf 6.01 is 82 ELO. After 340 games >for each engine with the same time control 40 moves in 20 minutes. Shredder is >playing with the opening book by Sandro Necchi. I will public this tournament >later. Perhaps I produce other results in tournaments with Fritz, Hiarcs, Tiger >and Junior and perhaps the opening book by Sandro is tuned against this group of >engines. Or simply, around 400 games are not enough. > >FACT is: ?! >The opening book by Harry Schnapp is really a sensation and one of the best >available opening books today! ?!!????? Jorge Picachú returned to the Forum with new..... I have checked the "sensational Harry Schnapp's Book". The book is 1.780.651 moves, depth = 63 plies according to the site. Previous version was 1.552.937 moves, depth = 63 plies. 1) Considering some limitations and known bugs of the Arena Gui to correct the moves what makes difficult to introduce moves quickly with correct priorities. 2) Considering the significant difference in the number of moves and the short time between releases. 3) Considering the book has saved statistics about games and the results come from pgn files with real games. 4) Considering that if we continue checking only the first moves have priorities. Example, after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6, we find all thh moves with the default priority of assigned by Arena = 5. Where do your facts come from? From the same ..... site where you have returned. > >Update text by Harry Schnapp in German language: Will you be able to post something that it is really useful to read? Just Jorge Picachú in action... ;) AO.
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