On 17/09/2011 1:31 PM, Timothy Y. Chow wrote: > I then decided to perform a 2-ply evaluation of one of the moves that I > had *not* rolled out. I scrolled down to find "20/14* 3/1" and clicked on > it, and then I clicked the "2" button to get a 2-ply analysis. I got the > 2-ply analysis I wanted, but (here's the bug) the dice switched color! > That is, instead of two black dice with 2's on them, there were now two > *white* dice with 2's on them. > > The most amazing thing, though, was that I then clicked on some other play > and clicked the "2" button to get a 2-ply analysis, and now it's somewhat > hard to describe what happened. The computer seems to have treated the > play as a play by *White* (after all, the dice are white!) and tried to > evaluate it accordingly. But 20/18(2) is illegal for White to play here > because Black owns that point. Undaunted, GNU relabels the moves with > 20/18(2) in them as "20/18*(2)". Astounding! What is it doing? > > I'm curious whether you can reproduce my experience. > > Tim
With your file I followed the instructions exactly. Originally I couldn't reproduce it but then discovered I was using the 20110209 build. I then tried with the latest 20110822 version and it was reproducible. Although the 20110209 version didn't seem to have the same issue I did note that in both cases selecting 20/14* 3/1 (28th in the analysis pane) causes the cursor in the game (move) list to shift from the right column to the left column (So the cursor is now sitting on the blank) . In newest releases the dice change color and the state seems to get mixed up as well. It is definitely a bug. I am currently busy on something else at the moment but I will put it on the mailing list if someone wished to investigate. -- Michael Petch CApp::Sysware Consulting Ltd. OpenPGP FingerPrint=D81C 6A0D 987E 7DA5 3219 6715 466A 2ACE 5CAE 3304
(;FF[4]GM[6]CA[UTF-8]AP[GNU Backgammon:0.90.0]MI[length:0][game:0][ws:4][bs:2]PW[gnubg]PB[tchow]DT[2010-01-26]RU[Jacoby]GS[M:0 1 0 1 0 0 0 0 0 0 0 1 0.000000 0.000000 0.000000 0.000000][C:0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000][D:0 0 0 0 0 0 0 0 0 0 0.000000 0.000000 0.000000 0.000000] ;AE[a:y]AW[a][a][c][c][d][d][f][f][f][f][k][m][m][t][t]AB[v][u][u][u][s][s][s][s][r][r][l][l][l][e][e] ;CV[1] ;CP[c] ;B[22lnlnlnuw]A[0][lnlnlnuw X ver 3 Score 0.06989324838 0.02970448323 Trials 1296 Output 0.5166290402 0.07438579947 0.001776279649 0.07779625803 0.001919530565 0.02970448323 0.06989324838 StdDev 0.001232845592 0.001345802099 0.0001624970319 0.001505711698 0.0001391313999 0.003105302341 0.006271719001 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][lnlnlnsu X ver 3 Score 0.04458785057 0.01480447967 Trials 1296 Output 0.510581851 0.07434979081 0.001911157276 0.08063697815 0.00198311056 0.01480447967 0.04458785057 StdDev 0.001227459288 0.001347614685 0.0001545803971 0.001436774968 0.0002727517858 0.003041324439 0.006042401306 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][lnlnlnvx X ver 3 Score 0.00300029153 -0.02073611505 Trials 1296 Output 0.497687906 0.06824421883 0.001503835549 0.08403381705 0.001826265943 -0.02073611505 0.00300029153 StdDev 0.001260631718 0.00132195116 0.0001618175011 0.00147251843 0.000204149299 0.003059612121 0.006237074733 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][lnnppruw X ver 3 Score -0.04618564993 -0.03856677562 Trials 1296 Output 0.4820916951 0.08510920405 0.002345379442 0.08773680031 0.00246787467 -0.03856677562 -0.04618564993 StdDev 0.001158250263 0.001367025659 0.0001882450451 0.001490267226 0.0001762401807 0.002800814109 0.005867913365 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][lnnpprsu X ver 3 Score -0.07177681476 -0.05419926718 Trials 1296 Output 0.4751992822 0.08062414825 0.002030522563 0.08521415293 0.002038371982 -0.05419926718 -0.07177681476 StdDev 0.001140217646 0.001314462861 0.0001007680912 0.001541650039 0.0001694697858 0.002830038778 0.005968343467 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][susuuwuw X ver 3 Score -0.07406114787 -0.05549866334 Trials 1296 Output 0.4760964513 0.0851746425 0.002444183454 0.09314479679 0.002165462123 -0.05549866334 -0.07406114787 StdDev 0.001132314792 0.001387152588 0.0002062842832 0.00149863679 0.0002482496202 0.002913690405 0.006442336366 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][suuwuwvx X ver 3 Score -0.07777897269 -0.06775608659 Trials 1296 Output 0.4730627835 0.08632119745 0.001751183881 0.09942004085 0.00253384863 -0.06775608659 -0.07777897269 StdDev 0.001161016873 0.001343109063 0.0001984982955 0.00169846369 0.0002441253018 0.002885768656 0.006034336984 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][egegsuuw X ver 3 Score -0.07778787613 -0.07120704651 Trials 1296 Output 0.4722999334 0.0767981112 0.002318982035 0.09256796539 0.002356149955 -0.07120704651 -0.07778787613 StdDev 0.001098539797 0.001515719341 0.0002213793341 0.00164781895 0.0001722395536 0.002847474301 0.006311797071 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][lnnpprvx X ver 3 Score -0.1021827906 -0.08041521162 Trials 1296 Output 0.4652278423 0.07687904686 0.001461994369 0.08712821454 0.002083756961 -0.08041521162 -0.1021827906 StdDev 0.001179636223 0.001293082722 0.0001759965235 0.001496368204 0.0001417898166 0.002803648356 0.006114738062 SK 0 RC 1 1 0 1 0 0 10 1 1 5 "Mersenne Twister" 846563796 cube0 ver 3 2C 1 0.000000 1 cheq0 ver 3 2C 1 0.000000 1 filt0 0 16 0.32000 -1 0 0.00000 cube1 ver 3 2C 1 0.000000 1 cheq1 ver 3 2C 1 0.000000 1 filt1 0 16 0.32000 -1 0 0.00000 latecube0 ver 3 2C 1 0.000000 1 latecheq0 ver 3 2C 1 0.000000 1 latefilt0 0 8 0.16000 -1 0 0.00000 latecube1 ver 3 2C 1 0.000000 1 latecheq1 ver 3 2C 1 0.000000 1 latefilt1 0 8 0.16000 -1 0 0.00000 cubetrunc ver 3 2C 1 0.000000 1 cheqtrunc ver 3 2C 1 0.000000 1][egeggigi E ver 3 0.459504 0.047065 0.000704 0.077079 0.000438 -0.144680 0C 0 1 0.000000 1][egeguwuw E ver 3 0.457246 0.068946 0.000874 0.102687 0.000849 -0.154840 0C 0 1 0.000000 1][egeguwvx E ver 3 0.452844 0.068609 0.000854 0.101732 0.000663 -0.166925 0C 0 1 0.000000 1][lnsuuwuw E ver 3 0.447248 0.090005 0.001302 0.124208 0.002015 -0.184989 0C 0 1 0.000000 1][lnlnlnnp E ver 3 0.440758 0.080247 0.001515 0.107432 0.001653 -0.196970 0C 0 1 0.000000 1][suuwuwuw E ver 3 0.438347 0.069799 0.000869 0.091713 0.000839 -0.199047 0C 0 1 0.000000 1][lnlnsuuw E ver 3 0.436377 0.083763 0.001775 0.121091 0.002400 -0.219342 0C 0 1 0.000000 1][egegsuvx E ver 3 0.437863 0.060725 0.000698 0.107461 0.000706 -0.222994 0C 0 1 0.000000 1][lnlnnpnp E ver 3 0.432386 0.075435 0.001373 0.104977 0.001606 -0.223526 0C 0 1 0.000000 1][egeglnln E ver 3 0.443144 0.078788 0.001339 0.158615 0.002755 -0.238923 0C 0 1 0.000000 1][susuuwvx E ver 3 0.418909 0.066111 0.000893 0.097230 0.000798 -0.263831 0C 0 1 0.000000 1][lnlnuwuw E ver 3 0.423640 0.079846 0.001469 0.125638 0.002324 -0.264246 0C 0 1 0.000000 1][lnnpsuuw E ver 3 0.421719 0.084434 0.001465 0.126749 0.002427 -0.266774 0C 0 1 0.000000 1][uwuwuwvx E ver 3 0.414896 0.061750 0.000482 0.096407 0.000431 -0.278747 0C 0 1 0.000000 1][lnlnsuvx E ver 3 0.416774 0.073704 0.001223 0.118714 0.001578 -0.283041 0C 0 1 0.000000 1][lnlnuwvx E ver 3 0.413122 0.076780 0.001343 0.123152 0.001812 -0.294995 0C 0 1 0.000000 1][egeglnnp E ver 3 0.427109 0.080478 0.001118 0.176745 0.002935 -0.300798 0C 0 1 0.000000 1][lnnpuwuw E ver 3 0.411285 0.079849 0.001179 0.131954 0.002330 -0.306150 0C 0 1 0.000000 1][eggiikvx E ver 3 0.444225 0.089260 0.001619 0.273550 0.005636 -0.332852 0C 0 1 0.000000 1][lnnpuwvx E ver 3 0.401118 0.077750 0.001107 0.129028 0.001855 -0.334587 0C 0 1 0.000000 1][lnlnsusu E ver 3 0.403016 0.064525 0.001244 0.129196 0.002575 -0.341743 0C 0 1 0.000000 1][lnnpsuvx E ver 3 0.399375 0.072614 0.000983 0.127634 0.001715 -0.343033 0C 0 1 0.000000 1][egegsusu E ver 3 0.405169 0.049060 0.000670 0.126422 0.001299 -0.346355 0C 0 1 0.000000 1][lnsuuwvx E ver 3 0.394127 0.078695 0.001132 0.139358 0.002149 -0.363660 0C 0 1 0.000000 1][egeglnuw E ver 3 0.407429 0.080859 0.001262 0.209998 0.004707 -0.389282 0C 0 1 0.000000 1][egeglnvx E ver 3 0.399017 0.075315 0.000849 0.192130 0.002531 -0.400961 0C 0 1 0.000000 1][lnuwuwvx E ver 3 0.382144 0.073552 0.000890 0.145656 0.002066 -0.409008 0C 0 1 0.000000 1][lnsusuuw E ver 3 0.384219 0.070126 0.001176 0.148663 0.003317 -0.409686 0C 0 1 0.000000 1][lnnpsusu E ver 3 0.381791 0.061640 0.000960 0.138394 0.002695 -0.414758 0C 0 1 0.000000 1][egeglnsu E ver 3 0.398249 0.072097 0.001082 0.205411 0.004368 -0.419606 0C 0 1 0.000000 1][lnuwuwuw E ver 3 0.373988 0.064468 0.000715 0.143440 0.001849 -0.438904 0C 0 1 0.000000 1][eggiiksu E ver 3 0.421934 0.089394 0.002119 0.315328 0.010226 -0.493431 0C 0 1 0.000000 1][lnsusuvx E ver 3 0.353179 0.056325 0.000730 0.151344 0.002417 -0.540534 0C 0 1 0.000000 1][egeggiik E ver 3 0.413139 0.082059 0.001829 0.349683 0.008488 -0.615074 0C 0 1 0.000000 1][lnlnnppr E ver 3 0.341806 0.065264 0.000974 0.184648 0.004362 -0.645892 0C 0 1 0.000000 1][sususuuw E ver 3 0.313966 0.043432 0.000591 0.164475 0.003671 -0.778886 0C 0 1 0.000000 1][eggiikuw E ver 3 0.384670 0.086733 0.002038 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0.496067 0.020211 -1.000000 0C 0 1 0.000000 1][egeggivx E ver 3 0.259668 0.057846 0.000941 0.484739 0.007725 -1.000000 0C 0 1 0.000000 1][eglnlnsu E ver 3 0.278129 0.071395 0.001724 0.518440 0.029525 -1.000000 0C 0 1 0.000000 1][eguwuwuw E ver 3 0.261109 0.060180 0.000867 0.489074 0.013828 -1.000000 0C 0 1 0.000000 1][egsuuwvx E ver 3 0.269993 0.075316 0.001539 0.531388 0.014306 -1.000000 0C 0 1 0.000000 1][eggisuvx E ver 3 0.247484 0.059605 0.001105 0.516530 0.013842 -1.000000 0C 0 1 0.000000 1][eggilnln E ver 3 0.259367 0.066231 0.001555 0.533749 0.027995 -1.000000 0C 0 1 0.000000 1][eguwuwvx E ver 3 0.256373 0.069866 0.001209 0.545139 0.016441 -1.000000 0C 0 1 0.000000 1][egeggisu E ver 3 0.251035 0.054675 0.001162 0.531827 0.013236 -1.000000 0C 0 1 0.000000 1][eglnnpvx E ver 3 0.252720 0.068225 0.000986 0.540705 0.024969 -1.000000 0C 0 1 0.000000 1][egsusuvx E ver 3 0.234997 0.048848 0.000832 0.507662 0.014974 -1.000000 0C 0 1 0.000000 1][eglnlnuw E ver 3 0.262715 0.073387 0.001976 0.579439 0.038028 -1.000000 0C 0 1 0.000000 1][eggiuwvx E ver 3 0.245684 0.066571 0.001403 0.561434 0.014862 -1.000000 0C 0 1 0.000000 1][egsusuuw E ver 3 0.251876 0.064160 0.001497 0.566755 0.020952 -1.000000 0C 0 1 0.000000 1][eggisuuw E ver 3 0.255509 0.073156 0.001830 0.584934 0.020599 -1.000000 0C 0 1 0.000000 1][eglnnpsu E ver 3 0.253774 0.068046 0.001197 0.571132 0.037338 -1.000000 0C 0 1 0.000000 1][eglnsuvx E ver 3 0.243463 0.062641 0.000908 0.554887 0.029829 -1.000000 0C 0 1 0.000000 1][egeggiuw E ver 3 0.247780 0.062814 0.001578 0.583481 0.014367 -1.000000 0C 0 1 0.000000 1][eggilnnp E ver 3 0.243472 0.066680 0.001174 0.578056 0.033127 -1.000000 0C 0 1 0.000000 1][eggiuwuw E ver 3 0.245384 0.068779 0.001518 0.594947 0.023786 -1.000000 0C 0 1 0.000000 1][eglnuwvx E ver 3 0.237953 0.068391 0.001068 0.601450 0.036210 -1.000000 0C 0 1 0.000000 1][eggisusu E ver 3 0.221321 0.047412 0.000973 0.563402 0.022082 -1.000000 0C 0 1 0.000000 1][eglnsuuw E ver 3 0.248741 0.076979 0.001408 0.623132 0.050404 -1.000000 0C 0 1 0.000000 1][eglnnpuw E ver 3 0.245137 0.073486 0.001404 0.623034 0.044971 -1.000000 0C 0 1 0.000000 1][eggilnvx E ver 3 0.222784 0.060179 0.000813 0.584823 0.030152 -1.000000 0C 0 1 0.000000 1][egeggiln E ver 3 0.228265 0.056879 0.000850 0.603498 0.032290 -1.000000 0C 0 1 0.000000 1][eglnuwuw E ver 3 0.240592 0.072377 0.001158 0.632835 0.055807 -1.000000 0C 0 1 0.000000 1][eglnsusu E ver 3 0.221812 0.050450 0.000774 0.588305 0.042597 -1.000000 0C 0 1 0.000000 1][eggilnsu E ver 3 0.217647 0.058681 0.000940 0.628832 0.047089 -1.000000 0C 0 1 0.000000 1][eggilnuw E ver 3 0.215527 0.065301 0.001132 0.668420 0.054432 -1.000000 0C 0 1 0.000000 1][egsususu E ver 3 0.161488 0.025022 0.000254 0.634374 0.050098 -1.000000 0C 0 1 0.000000 1][eglnlnnp E ver 3 0.177425 0.056354 0.000675 0.741326 0.226671 -1.000000 0C 0 1 0.000000 1]MR[])
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