Author: Mikael Bäckman
Date: 11:16:00 02/28/06
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On February 27, 2006 at 10:39:25, Mridul Muralidharan wrote: >R4 : Pmess vs Chepla > >I have been playing some sparring matches against chepla before cct and result >has been roughly equal (with chepla with its monster nps having a lead :-) ). >Chepla gets insane depths and nps ... though Riverman slowed it down with added >mobility seeing the way it was playing pre-cct (damn me for pointing this to him >:-) ). The 'insane depth' was caused by not using recap extensions, and using late-move pruning. That's 2-3 extra plies in most positions :). For CCT I removed late-move pruning as I can't get that to work at longer time controls. In tactical suites and in blitz games it's worth about 100 elo, but in longer games, I see no difference. I also put recap extension back in, which brought the depth back to the 'normal' 12-13 ply in middlegames. >AND , this was the first game where a severe bug finally decided to rear its >head. >The opening was , surprisingly , not too bad for pmess imo (and I am a patzer , >so dont take my word for this) ... and into the middle game , like Riverman put >it , "pmess owned the center , the king side and the queen side" :-P ofcourse he >was jesting :) >Which is when pmess decided to trade rook for a bishop ... I did fix a bug there >afterwards , but that was not severe enough a problem I guess. >But yes , this was the begining of the downfall for pmess ... from then on , the >score never really went up. >It was a tough seesaw since ... with chepla and pmess alternating in some >maneuvering for control. The e file was a monster for chepla and eventually won >the game for it. >[D]5rk1/1p2q2p/2ppr3/p4pp1/2PQ4/P1N3P1/1P5P/3R1B1K w - - 0 28 >According to chepla , this was the begining of the end for pmess ... I did find >a pretty severe bug in my queen eval - and the result was Qa7 here ... but I am >not fully convinced that this was a fatal mistake. Before Qa7 Chepla had about a half a pawn advantage for black, after Qa7 it jumped to a full pawn, and never went (much) below that. /Mikael >But the resulting moves were definitely impacted by the bug ... not sure which >move had a spike in score fall , but it was a steady decline. >A well deserved win for chepla and spanks for pmess :-)
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