Author: Bruce Moreland
Date: 13:19:32 06/23/98
Go up one level in this thread
On June 23, 1998 at 09:45:45, Moritz Berger wrote: >I took the example position on Eds page to test the 'anti GM' qualitities of >some other programs (P233MMX, NT 4.0, 128 MB RAM). Especially Junior's >performance is frightening (Rxe6 at 4.5 ply after 2", after 4" even with >positive evaluation!). > >No question that Anti-GM-Rebel is now among the very best programs in this >position, so Ed clearly is on the right track ... >2rqk2r/pb1nbp1p/4p1p1/1B1n4/Np1N4/7Q/PP3PPP/R1B1R1K1 w k - 0 1 >Junior 4.6 32768 KB hash tables >00:04 9 semiply 0.04 Rxe6! > >Fritz 5.01 98304 KB hash tables >00:04 7/28 -1.13 Rxe6! >Hiarcs 6 (Fritz engine) 98304 KB hash tables >01:42 7/23 -0.88 Rxe6! >Crafty v15.14, hash table memory = 48M bytes, pawn hash table memory = 10M > 9 3:49 ++ 1. Rxe6!! >Shredder 2.0 > 9.07 5:24.71 -0.15++ Rxe6 (17.259.985) Ferret: Never, I hope. I get a fail high a few minutes into this, but the re-search fails low. I like aggressive play, and I like speculative play that works, but I think that programs are seeing something here that doesn't exist. Crafty likes the position after Rxe6, it ends up with a positive score. Bob wasn't around so I could ask him, but I did some experiments and got permission retroactively. I set up the position after Rxe6 fxe6 and asked Crafty to play white (30 0, with Crafty on a 4 processor P6/200 and mine on a 533 mhz Alpha). It was happy for a couple of moves then the bottom fell out. It tried to throw more fuel on the fire and ended up a rook down with nothing to show for it. I reversed the colors and tried again, and mine started out at like -1.7 and stuck there into an ending where it as down the exchange for a pawn, and had worse development. I am hoping that the reason my program won't play this is that it sees that the bottom falls out. I would be happy to be shown a line that has any promise for white. If someone thinks that this really does win, or at least offers good counterplay, please post a line. My own analysis shows a nasty check or two, then black is simply up material. Additionally, I would like to ask those who report when they find this move to see how long their programs hold the move. Do they stick with it for 24 hours? Finally, I would like to volunteer to game-test with anyone who would like to see if their program can hold either side of this (preferably both). I can set the position up and get things running in a few seconds on ICC. As I said before, I like speculative play, and this might be the best way to play very strong players, I do not know. But I don't think this move gets an "!" or "!!" in an absolute sense, I think it is "?!", and I don't know if this is properly understood by any of these programs, including mine. bruce
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.