Author: Dagh Nielsen
Date: 05:49:09 12/17/05
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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
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