Author: Rex
Date: 08:58:07 01/03/03
Go up one level in this thread
CM9000 running my personnal settings on a 1.533Ghz machine finds mate in 14.5 seconds 00:00:00.0 -0.78 3001 3245 Nf6+ Kh8 Nxe8 Nxd3+ cxd3 Raxe8 Qe3 00:00:00.0 -0.72 4001 10901 Nf6+ Kh8 Nxe8 Nxd3+ cxd3 Raxe8 Qe3 Rc8+ Kd2 00:00:00.3 0.00 5001 65105 Nf6+ Kh8 Bxh7 gxf6 Qxf6+ Kxh7 Qh4+ Kg8 00:00:01.0 3.23 6001 239703 Nf6+ Kh8 Bxh7 Qe7 Bg6 Nd3+ Bxd3 Qxf6 00:00:01.9 2.93 7001 491094 Nf6+ Kh8 Bxh7 Qe7 Bg6 Nd3+ Bxd3 Qa3+ 00:00:05.8 5.96 8001 1466027 Nf6+ Kh8 Bxh7 Qe7 Qh5 Bg4 Nxg4 Qg5+ 00:00:14.5 Conversion in -489 9001 4295679 Nf6+ Kh8 Bxh7 Qe7 Bg6 00:00:18.8 Conversion in -492 10001 5737061 Nf6+ Kh8 Bxh7 Qe7 Qh4 00:00:24.3 Conversion in -492 11001 7856436 Nf6+ Kh8 Bxh7 Qe7 Qh4 00:00:34.2 Conversion in -492 12001 11744942 Nf6+ Kh8 Bxh7 00:01:00.6 Conversion in -492 13001 21467288 Nf6+ Kh8 Bxh7 Qe7 Qh4 Qxf6 Rxf6 Rfc8 Bg6+ Kg8 Qh7+ Kf8 Rxf7+ Ke8 Qg8# On January 02, 2003 at 08:53:35, scott farrell wrote: >This position arose in a game between chompster and a human kjf on ICC. > >kjf ran his clock down to about 6 secs in a 5 1 blitz game, my chompster had >4:30 on the clock, and lost !!! > >This is the position after Nxb2 ... blunder .... > >[D] r3qrk1/pp1b1ppp/8/4p1Q1/4N3/3B4/PnP3PP/2K2R2 w - - 0 19 > >The trick is to avoid taking the black queen, and instead Bxh7. > >Can some people let me know how nodes and what ply they solve this in. Any >inside into extensions, null move/pruning exclusions that helped would be >interesting. > >A slightly older crafty (18.14) needs about a guestimated 1.9 million nodes for >the final score, and about 600K nodes to see the fail-high, at depth 8. > >My chompster engine needs 1 million nodes to see the fail high, then 1.7million >nodes to see a score of over +3. > >my engine didnt see this tactic in the previous move, and doesnt see it until >some 6 million nodes, too many for my slow 100Knps program to see in a blitz >game. I am still trying to work out why it even wanted to play Nxb2 on the >previous move, I think it was trying to avoid a large number of checking moves, >quite clearly f5,h6,f6 are all better/safer/simpler. > >BTW does anyone know how to get a nice analysis out of CM8000 - all I can get is >a few english phrases which are nice, but no score/depth/node count etc. CM8000 >would only tell me about swapping queens for knights and bishops and such like, >and never did Bxh7, but I never got it to run proper analysis ... > >Thanx >Scott
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