Author: Torstein Hall
Date: 08:10:36 11/02/99
Go up one level in this thread
On November 02, 1999 at 08:37:49, Mark Andreoli wrote: I will try to look at the game when I'm getting home from work, but I think F5 did not get deep enough into the pos. on your hardware to understand that you had a great attack for the rook. I can only explain the terms as layman, I'm no chess computer programmer. ( ..and if I'm lucky this is not to wrong! ) Null move I belive Fritz ( and other programs ) let one side do two moves in a row. If nothing goes terribly wrong, the position can not be that bad. Hashing is another way to speed up the program. If the program reach the same position after another sequense of moves, it do not have to evaluate it again. The eval is probably saved in the hashtable. On some rare occasions the programs get the positions mixed up, as they have to give each pos. a unique numerical value. Torstein Hall > Thanks for all of your comments guys(Torstein,Laurence,Tim). The game is >posted below with a few comments of mine at key positions.I really would like to >get to the bottom of this. Hopefully someone can analyze or F5 vs. F5 the game >below.(I am sure your computers are a lot better than my 133 pentium >,Javaless,16 RAM,operating system 3.1 "don't laugh") > It was an active 30' game at my club in Naples ,Italy. I am rated around >2100 FIDE and my opponent is an A player. However you will find the game >interesting anyways. > Also I am not really up on the computer chess"lingo" as of yet. So Thorstein >please forgive my ignorance but in "laymans" terms could you explain to me what >a NULL MOVE is and a little on HASH TABLES and basically as you pointed out why >my F5 analysis (also blundercheck) MISSED IT? > > Andreoli (W) vs Canfora (B) > 1.e4 d6 2.d4 g6 3.f4 Bg7 4.Nf3 Nd7 5.Bd3 c5 6.c3 Ngf6 7.e5 Nd5 8.OO cxd4 >9.cxd4 dxe5 10.fxe5 OO 11.Qe1 Qb6 12.Kh1 Nb4 13.Bc4 ( I thought at the time this >was a descent move although I give up a rook for an attack/ Fritz said no on >both the blunder check and analysis ,around -2.00. ) black played ...Nc2. > 14.Qh4 h5 (don't take that rook or I'll play Bh6 followed by Ng5)15.Nc3 Qb4 >16.Bd3 Na1 17.Nd5 Qa4 18.Nxe7+ Kh8 19.Nxg6+ (Fritzie starts changing his tune >here -now he gives me an advantage)...fxg6 20.Bxg6 Kg8 21.Qh5 Rd8 22.Bh7+ Kf8 >23.Ng5+ Nf6 24 Qf7 mate. Ok gentlemen try analysis or blundercheck from move 24 > and Fritz can't handle it ,However let him go F5 vs F5 with at least 40 moves @ >2hrs and 30 minutes after the move 13 ...Nc2/ notice what happens!! Thanks let >me know!!
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