Author: Vincent Diepeveen
Date: 08:48:28 07/13/02
Go up one level in this thread
On July 13, 2002 at 03:28:12, Peter McKenzie wrote: between 2:10 and 3:00 i get a fail high for f5 at depth=11 which after 4:27 gets mainline. nearly 2 pawns better than other moves. hardware: dual 1.6Ghz k7 >On July 12, 2002 at 13:31:31, Will Singleton wrote: > >>I didn't see any discussion of this game, the pgn was not available for awhile. >>It appears to me that the game was drawn, but Warp picked the wrong move in the >>following position (fxg5). If Bxa5 draws, then Junior was indeed lucky to win >>the tournament. > >the game started about an hour late because the junior guys had a hard disk >failure and were installing all their tablebases on the new machine. i was >quite happy for this to happen. > >my random thoughts on the game, although i haven't analysed it yet and won't be >for a while as i am now on holiday for a couple of weeks; > >the game itself was exciting. warp played the first dubious move with nfg5, but >it wasn't too serious and the game was still about level. then junior played a >series of suspect moves such as ra6, h5, h4. warp had a good game, and then i >think junior unsoundly sacrificed a pawn. warp accepted it and defended well, >winning another pawn in the process. > >so warp is 2 pawns up but junior has a nice blockade and there is no easy way >for warp to make progress. probably warp should sacrifice the c-pawn, or even >sacrifice the exchange. i think the position is objectively winning but my >program doesn't see a good plan. > >eventually we get near the 50-move rule and also repetitions are an issue. warp >has the idea of moving is bishop over to a3 to push the c-pawn. good idea, but >not sound because of juniors wonderful f5. at this late stage of the game the >thinking time is much reduced, so warp is not searching deep enough to see f5 >coming. soon after f5 warp thinks it is a draw but a few moves later i think it >thought it could avoid the draw and maintain a small plus which obviously was >incorrect. junior was showing a draw score for a while too, so i suspect you >are right and a draw was possible. in the end warp just wasn't up to the task, >and junior played very well. i was satisfied with how my program handled the >middlegame, but i must work on getting a bit more search depth to be fully >competitive. of course, playing with 1.7ghz vs 2x2ghz doesn't make it easy >either. > >i wonder how long programs need for f5, good test position i suspect. > >congratulations to the junior team, their program has very sharp teeth. > >you might guess the shift key doesn't work on this machine... > >> >>[D]3q3k/5Q2/7r/p2N1Pp1/P1r1pPP1/4P2p/3B3P/6K1 w - - 0 67
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