Author: Dan Kiski
Date: 06:59:41 12/15/98
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On December 15, 1998 at 09:46:51, Harald Faber wrote: >On December 15, 1998 at 09:34:15, Dan Kiski wrote: > >>While naturally any programmer can set up to play any move whatsoever, the Nunn >>positions let the engine play after move 10, naturally both sides should be >>allowed white and black. You can easily tell if the engine is actively seking >>the best move or playing a programmed response. Also with most programmes you >>can modify it's opening book to only know these opening positions that >>eliminates any possible way the engine would have a pre-programmed move. > >That would make a programmer adjust his program for 10 positions!? >And there are always 2 possibilities: >1) if your program fails, re-write it so that it handles these opening positions >correctly >2) let your program play other openings > >If I were programmer I wouldn't jump on the train no.1 because in 2) are much >more openings. >I would only take 1) if I'd fail in 2) too... :-) > >>Again the advantage to this type of set-up is that it prevents opening book >>wins, > >Honestly I haven't seen many games decided by killer-lines. > >And additionally I find it OK when a program e.g. plays French better than >Sicilian and therefore the move preferences ae set to avoid Sicilian. What you >do with the Nunn test is to see "oh, program (a) looses, it is no good". But >that is certainly wrong as I explained above. Or did I misunderstand you? While I agree as I said a programmer can adjust his program for any position, to my knowledge none have done so to soley win the Nunn positions. As both programs are given white and black and as I have said before I play a series of games then the program can learn from it's mistakes of the previous game. As I have also said and you have too, IMHO all programs in the top ten of the SSDF are relatively equal within say 50 ELO points. Some are naturally better than others from certain positions be those positions tactical, positional, defensive or attacking, so I don't think any programs are no good. I just do not see any point in playing 50 random games whereby the computer engine gets to pick it's best line and comes out of the opening 0.75 up. I read once here that Fritz 5.16 has never came out of book with an assesment of worse than -0.5, well I have seen cases where computers come out of their opening books worse than -1.00 that is why I use the Nunn positions.
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