Author: Dann Corbit
Date: 12:53:00 06/07/99
Go up one level in this thread
On June 07, 1999 at 05:16:47, blass uri wrote: > >On June 07, 1999 at 00:47:15, Christophe Theron wrote: > >>On June 06, 1999 at 14:22:49, blass uri wrote: >> >>> >>>On June 06, 1999 at 11:10:38, Charlie GOLD wrote: >>> >>>> >>>>On June 04, 1999 at 12:13:59, Eran wrote: >>>> >>>>>Since Junior5 does not have underpromotion code, I am wondering whether next >>>>>version of Junior, probably Junior 6, will have underpromotion code, won't it? >>>>>Well, basically all strongest chess programs should be 100% state of art, right? >>>>>In other words, since Junior5 does not have underpromotion code, it cannot be >>>>>100% state of art, is it? >>>>> >>>>>Eran >>>> >>>> I wonder how many people have Juionr 5.0 AND have yet to find out that it does >>>>not have underpromotion codes. I did not know this and am grateful to have found >>>>out. This is unpardonable for a top program to NOT have this. I reckon I, and >>>>others, will have to test this on other programs from now on. charlie >>> >>>It is more easy to say that it should have underpromotion code then to do it. >>>Amir Ban said that it is not a small change. >>> >>>I tested Junior5 in studies and found that it have also other tactical bugs(I am >>>talking about cases that Junior can never see simple tactics that other programs >>>have no problem to see). >>> >>>Fortunately Junior can practically play very well with these tactical bugs. >>> >>>I told amir ban about all the bugs that I found. >>>I hope that he will be able to solve the problems but it is more easy to >>>discover problems than to solve them. >>> >>>My version Junior5.4 suffers from most of the tactical bugs that I discovered in >>>Junior5. >>> >>>I believe(based on my test games) that it is clearly better than Junior5 >>>(the main change relative to Junior5 is in the evaluation function). >>> >>>Uri >> >> >>Can you post some of these bugs? >> >>I bet other program will have them too... >> >> >> Christophe > >Here are some examples for Junior5 tactical bugs > >6q1/7k/Q7/8/7K/7B/8/7q w - - 0 1 > >Junior5 cannot see a simple stalemate combination > >8/6p1/4pp2/2k1P2p/1pP1p2P/1K2P3/5PP1/8 b - - 0 1 > >Junior5 is choosing f5 after a short time(instead of the drawing fxe5) and >believes that it is winning(only after f5 it understand that it was wrong). > >8/8/8/8/8/8/pn2K3/B1k5 b - - 0 1 > >Junior5 plays Kb1 and does not find the winning move and it is not a problem of >time. Here are crafty results, and some notes: 6q1/7k/Q7/8/7K/7B/8/7q w - - acd 20; acn 196701403; acs 1002; ce 0; pv Qh6+ Kxh6; Crafty chooses Qh6+ and keeps it continuously. Eval looks like a draw (ce=0). 8/6p1/4pp2/2k1P2p/1pP1p2P/1K2P3/5PP1/8 b - - acd 20; acn 137822296; acs 1001; ce -150; pv fxe5 g4 g6 g5 Kd6 Kxb4 Kc6 Ka4 Kc5 Kb3 Kd6 Kc2 Kc6 Kb2 Kd7 Kc3 Kd6 Kd2 Kc5; Switches from f5 to fxe5 at 34.71 seconds, but does not see the real value of the move until ply 20 at 2:27. 8/8/8/8/8/8/pn2K3/B1k5 b - - acd 22; acn 194143770; acs 1000; ce 982; pv Na4 Ke1 Nc5 Ke2 Kb1 Be5 Na4 Kf3 Nb2 Kg4 a1=Q Kf5 Qa5 Ke4 Nc4 Bg3 Nd2+ Kf4 Qh5 Ke3 Nf1+ Kf2 Qf5+ Kg2 Ne3+ Kh2 Kc2; Switches to Na4 at 9.89 seconds.
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