Author: William Penn
Date: 21:43:58 12/11/00
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On December 12, 2000 at 00:06:23, William Penn wrote: >On December 11, 2000 at 16:06:07, John Merlino wrote: > >>On December 11, 2000 at 14:52:28, William Penn wrote: >> >>>The signs of scores are confused in CM8000. Previously it was confirmed there >>>is a problem with omitting the minus sign when the score number is in the range >>>of -0.01 to -0.99. Now, here is an example of the signs being wrong when the >>>score number is larger than 1.00. >>> >>>BR -- -- BQ BK -- BN BR >>>-- BP BP BB -- -- -- -- >>>-- BB -- -- BP BP -- BP >>>BP WP -- BP WP -- BP -- >>>WP -- -- WP -- -- -- WN >>>-- WN WP WB -- -- -- WP >>>-- -- -- -- -- WP WP -- >>>WR -- WB WQ WR -- WK -- >>> >>>White: a custom personality Black: human Black to move >>> >>>if Chessmaster box checked in Thinking Lines window >>>Time Depth Score Positions Moves >>>0:07 7 5.25 210887 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 Qc2 >>>0:27 8 5.01 716123 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 Qd2 >>>1:11 9 5.46 2169809 h5 Ng6 Rh6 Bxg5 fxg5 Qf3 Bxb5 Bxb5+ ... >>>3:46 10 5.71 7208736 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 h4 ... >>>21:56 11 6.15 42116395 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 Nf3 ... >>> >>>if White box checked in Thinking Lines window >>>Time Depth Score Positions Moves >>>0:04 7 -5.25 210887 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 Qc2 >>>0:13 8 -5.01 716123 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 Qd2 >>>0:35 9 -5.46 2169809 h5 Ng6 Rh6 Bxg5 fxg5 Qf3 Bxb5 Bxb5+ ... >>>1:52 10 -5.71 7208736 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 h4 ... >>>10:49 11 -6.15 42116395 h5 Ng6 Rh7 exf6 Qxf6 Ne5 Rh6 Nf3 ... >>> >>>Everything is the same in these two charts except the signs of the scores and >>>the times. That's because the custom personality is identical to Chessmaster, >>>just with a different name. The first chart takes twice as much time because >>>another engine was running in the background, unknown to me (inadvertently, i.e. >>>that's another major problem with CM8000!?). >>> >>>Although it would be possible to define a special protocol to make these results >>>acceptable, that would complicate things unnecessarily, and will cause mass >>>confusion because it departs from what almost everyone expects. Again, the >>>standard protocol is that the score is positive when white has an advantage, and >>>is negative when black has an advantage -- independent of who has the move. It >>>should also be independent of which box(es) is checked in the Thinking Lines >>>window! >>> >>>Obviously white is winning in this position, so the signs of the scores should >>>be positive in all cases. >>>WP >> >>I cannot duplicate this. How are you setting up a position with Black to move, >>and then clicking on the White checkbox and getting output? The White engine >>should not start thinking (in this instance) until it is its turn to move? Could >>you give the full move list that arrived at this position? >> >>Also, it should be noted that the bug involving negative scores less than -1.00 >>has been found and fixed. Thanks again for your assitance, >> >>jm > >The move sequence leading to the above position is: >1.Nf3 Nc6 2.d4 e6 3.e4 d5 4.e5 Bb4+ 5.c3 Ba5 6.Bd3 Bd7 7.0-0 h6 8.b4 Bb6 9.a4 a5 >10.b5 Nce7 11.Nbd2 Nf5 12.Nb3 g5 13.h3 f6 14.Re1 Nh4 15.Nxh4 >You can enter the moves as human vs. human, then change the white player to a >custom personality via Ctrl-G. I used Chessmaster#0, just a different name for >Chessmaster, but it's treated as a custom player. Then check the white box and >the analysis begins. Actually it begins as soon as you change the player to a >custom personality, but you must check the white box to see it. To initialize >things, I usually save the game to the hard drive then reload it, which seems to >kill any other engines that might be running in the background, etc. > >Checking the white or black box always shows an active evaluation in progress in >the Thinking Lines window if one of the players is a custom personality. That's >as it should be. I like it that way! When fixing this problem, I hope you don't >kill that kind of versatility!? The only problem (apparently) is that the signs >of the scores are wrong. > >I'm glad to hear that the -0.01 to -0.99 problem was fixed. Just one little baby >step at a time, as Bill Murray said... :) >WP P.S. I neglected to mention that I always use infinite time controls. I only use CM for analysis, not to play. WP
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