Author: Jouni Uski
Date: 22:40:13 10/09/00
Go up one level in this thread
On October 09, 2000 at 14:01:56, Uri Blass wrote: >On October 09, 2000 at 13:28:49, Mike S. wrote: > >>In a winboard engine match game, Little Goliath 2000V3 found the following >>impressive sacrifice(s) to save half a point: >> >>LG2000V3 - Gromit30 >>8min+3sec (PII/333 MHz), 09.10.2000 >> >>1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 Qb6 >>9.Nf3 f6 10.exf6 Nxf6 11.0-0 Bd6 12.b3 0-0 13.Bf4 Qc7 14.Bxd6 Qxd6 15.Re1 Bd7 >>16.Nc3 Kh8 17.Qd2 Ng4 18.Nb5 Qb8 19.h3 Rxf3 20.gxf3 Qh2+ 21.Kf1 Qxh3+ 22.Ke2 e5 >>23.Rg1 Re8 24.fxg4 Bxg4+ 25.Rxg4 exd4+ 26.Kd1 Qh1+ 27.Kc2 Qxa1 28.Rh4 g6 29.b4 >>Qxa2+ 30.Kc1 Qa1+ 31.Kc2 Re1 32.Kb3 a5 33.bxa5 Nxa5+ 34.Kb4 b6 35.Nc3 Rc1 >> >>[D]7k/7p/1p4p1/n2p4/1K1p3R/2NB4/3Q1P2/q1r5 w - - 0 36 >> >>36.Rxh7+ Kxh7 37.Bxg6+ Kxg6 38.Qd3+ Kg7 39.Qxd4+ Kg6 40.Qg4+ Kf6 41.Qf4+ Ke6 >>42.Qg4+ Kf7 43.Qf4+ Ke8 44.Qe5+ Kd7 45.Qxd5+ Kc8 46.Qe6+ Kb7 47.Qd7+ Kb8 48.Qe8+ >>Ka7 49.Nb5+ Kb7 50.Nd6+ Ka7 51.Nb5+ Kb7 52.Nd6+ Ka7 53.Nb5+ Draw ½-½ >> >>LG2000V3 displayed 36.Rxh7+!! immediatly, with the evaluation of 0.00. Looks >>like an extremely difficult sacrifice, unexpected in a blitz game. I think >>Goliath must have some kind of special code or something for this kind of a >>draw. I tried several other engines in this position. None found Rxh7+, not even >>after more time. It seems their search extensions are not enough to recognise >>the draw, which it really is hopefully, assuming black's play after the 36th >>move cannot be improved (?). >> >>I know that black's previous move 35...Rc1 probably wasn't the best one, but >>nevertheless Goliath's sac of two pieces is great. The 3rd repetition comes >>after 35 (!!) plies. >> >>Regards, >>M.Scheidl >> >> >>Btw., Little Goliath 2000 V3 is very similar to Goliath light from the CB Young >>Talents CD, but with default selectivity=1 and without tb access (but same code >>otherwise, according to the author). > >Little Goliath is very good in seeing draws. >It is so good that it sometimes can see draws that do not exist. > This is correct! With all Goliath versions I see very often, that it shows 0.00 draw, but after some moves more may be -7,xx and soon it loses. So You can never trust it's draw scores... Jouni
This page took 0 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.