Author: Per Jørgensen
Date: 07:03:11 12/17/05
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On December 17, 2005 at 08:49:09, Dagh Nielsen wrote: >On December 17, 2005 at 07:36:20, Per Jørgensen wrote: > >>Hello Chesscomputerfriends! >> >>As I described in this Forum on the 15th of December and earlier I'm making a >>new Ratinglist based on 15 openingpositions. 10 of these are known from the >>CSS-Ranglist (for further information check this website www.computerschach.de), >>here are the 5 new openingpositions: >> >>C30 = Kings Gambit (1.e4,e5 2.f4) >> >>E17 = Queenindian (1.d4,Sf6 2.c4,e6 3.Sf3,b6 4.g3,Lb7 5.Lg2,Le7) >> >>B02 = Scandinavian (1.e4,d5 2.exd5) >> >>D35 = Orthodox Queens Gambit (1.d4,d5 2.c4,e6 3.Sc3,Sf6) >> >>A57 = Modern Ben Oni (1.d4,Sf6 2.c4,c5 3.d5) >> >>450 Games are played so far. It's time to see how the new openingpositions are >>doing and which engines who are performing best in each opening. Here comes the >>current dates: >> >>Kings Gambit: White-score: 40% Black-score: 60% >>Queenindian: White-score: 46,67% Black-score: 53,33% >>Ben Oni: White-score: 65% Black-score: 35% >>Scandinavian: White-score: 56,67% Black-score: 43,33% >>Orthodox Queens Gambit: White-score: 56,67% Black-score 43,33% >> >>And here you can see which engine made the highest score so far in each opening: >> >>WHITE: >> >>Kings Gambit: Fritz 9 70% >>Queenindian: Toga II 1.1 80% >>Ben Oni: Fritz 9 100%(!) >>Scandinavian: Toga II 1.1 80% >>Orthodox Queens Gambit: Fritz 9 and Fruit 2.2.1 each 70% >> >>BLACK: >> >>Kings Gambit: Shredder 9 90% >>Queenindian: Fruit 2.2.1 and Shredder 9 each 80% >>Ben Oni: Fritz 9 70% >>Scandinavian: Ktulu 7.5 70% >>Orthodox Queens Gambit: Shredder 9 70% >> >>I don't see any big surprises in these statistis dates with the exception of >>Ktulu 7.5's great performance with the black pieces in Scandinavian. It's also >>worth mentioning the dominant position of Fritz 9 in Ben Oni (a total score of >>85%). >> >>The Spike 1.0a Mainz test have been running for a couple of days and so far >>Spike is having a hard time. The current score is around 38% and very close to >>that of Loop List. The test will be done in app. 5 days and I'll post the result >>and the new ranking here in the forum. After that the Hiarcs 10 test will start. >> >>Best regards >>Per > >Hello Per, thanks for your careful information. > >I included the Benoni as Black for some time in my Playchess book, playing with >Fruit. It was also my experience that Fritz 9 (and Schredder 9) was very good as >White in this opening. Also, it was striking that in this opening, difference >between Fruit evaluation and Fritz 9 evaluation was often very big, like +0.2 vs >+1.3. To me, it seemed like Fritz 9 (and Schredder 9) was able to give a bonus >for white due to more space/superior pawn structure, while Fruit acted more like >a bean counter in this opening. > >A comment about test position scores: > >Ideally, I would aim for test positions that: > >(1) Score close to 50%. >(2) Have a relatively low draw score (=interesting positions). > >In both instances, the point would be not to give "free" points to the weaker >engine. In light of (2), you may want to provide statistics for the 1-0/½-½/0-1 >scores of the different positions. > >I see no problem if black scores slightly better, positions are played from both >sides anyway (so, in a sense, test positions are color neutral). > >Regards, >Dagh Nielsen Hello Dagh! Thanks for your reply and interest in my testwork. Basicly I agree with you but it is hard, almost difficult to obtain a close to 50% score for all selected openingpositions. Still, I'm glad that white after all have managed to score 40% in Kings Gambit (just a couple of years ago the score would have been much lower) and with the exception of Ben Oni all the new openingpositions are quite close to 50%. Regarding the variation of results (1-0,0-1,½-½) it looks like this for the moment: Kings Gambit: White 40% Black 60%, White: 9 6 15 Black: 15 6 9 Queenindian: White 46,67% Black 53,33%, White: 13 2 15 Black: 15 2 13 Ben Oni: White 65% Black 35%, White: 16 7 7 Black: 7 7 16 Scandinavian: White 56,67% Black 43,33%, White: 11 12 7 Black: 7 12 11 Orthodox Queens Gambit: White 56,67% Black 43,33%, White: 13 8 9 Black: 9 8 13 It's a bit surprising that Queenindian so far only resulted in 2 draws while Scandinavian at the moment has a quite high drawrate. Still, my testwork is quite young and the figures will probably change as more engines are tested. Best regards Per
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