Author: Chessfun
Date: 16:05:50 09/26/00
Go up one level in this thread
On September 26, 2000 at 18:53:45, Chessfun wrote: >On September 26, 2000 at 16:51:33, Uri Blass wrote: > >>[D]3r3k/p7/1p6/2p2Q1p/2P1R3/2P5/P2KP3/6q1 w - - 0 1 >> >>Hiarcs played Kc2 and had to resign some moves later because the queen cannot be >>saved[the game continued Kc2 Qd1+ Kb2 Rd2+ Ka3 Qc1+ Ka4 b5+ cxb5 Qc2+ Ka5 Qxc3+ >>and white resigned because of the line Ka6 Rd6+ Kb7 Qg7+ Kb8(forced because Kc8 >>is leading to mate) Rd8+]. >> >>How much time do programs need to avoid this tactical error?(some program like >>hiarcs can play Rd4 after a short time but later change their mind to Kc2 so the >>right test is to give them at least some minutes) >> >>Uri > > >Nice job noticing that move Uri !!. >This is from game 1 of my post yesterday. >Hiarcs 7.32 v Chess Tiger 12.92 Beta. >A good test position so it would seem. >I expect quite a few programs will have a problem with this. > >Hiarcs 7.32 48 mb for some reason seems to like Kc2 even to >depth 12/30 which is where I stopped it, after a big fail. >Though even now it's still thinking after 10 mins and hasn't >posted another line yet. > >Even Fritz 6a likes Kc2 for a while even Qd5?. Seems F6a has as many >problems with this as Hiarcs does. > >Chess Tiger 12.92 Beta selects it for about 3 secs between depths 10-11. >Though Tiger can clearly see that Rd4 leaves it still in the game. > >Following are; >Hiarcs 7.32 >F6a >Chess Tiger 12.92 Beta > >HIARCS 7.32 Cel 433, 48 Mb hash. >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 Qc1+ 49.Ka4 b5+ 50.cxb5 Qc2+ 51.Ka5 Qxc3+ 52.Ka6 >Rd6+ 53.Kb7 Qg7+ 54.Kc8 Qg8+ 55.Kb7 Rb6+ 56.Kc7 Qh7+ 57.Qxh7+ Kxh7 58.Re7+ Kh8 > µ (-1.06) Depth: 11/30 00:02:35 8153kN >46.Kc2 Qd1+ > µ (-1.33) Depth: 12/30 00:03:10 10219kN >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 Qc1+ 49.Ka4 b5+ 50.cxb5 Qc2+ 51.Ka5 Qxc3+ 52.Ka6 >Rd6+ 53.Kb7 Qg7+ 54.Kc8 Qg8+ 55.Kb7 Rb6+ 56.Kc7 Qb8+ 57.Kd7 Qd6+ 58.Ke8 Rb8+ >59.Qc8 Rxc8+ 60.Kf7 > -+ (-12.40) Depth: 12/30 00:05:28 20478kN > >Analysis by Fritz 6: >46.Kc2 Qd1+ 47.Kb2 > -+ (-1.75) Depth: 2/7 00:00:00 >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 > -+ (-1.75) Depth: 3/9 00:00:00 >46.Rd4 > -+ (-1.72) Depth: 3/11 00:00:00 >46.Rd4 cxd4 47.Qf6+ Kh7 > -+ (-1.41) Depth: 3/11 00:00:00 >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 4/13 00:00:00 >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 5/13 00:00:00 1kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 6/16 00:00:00 3kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 7/17 00:00:00 6kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 8/21 00:00:00 11kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 9/25 00:00:00 28kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ > -+ (-1.69) Depth: 10/27 00:00:01 237kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ Qg7 49.Qxd8 dxc3+ 50.Kc2 Kh6 > -+ (-1.66) Depth: 11/29 00:00:03 876kN >46.Rd4 cxd4 47.Qf6+ Kh7 48.Qe7+ Qg7 49.Qxd8 dxc3+ 50.Kc2 Kh6 > -+ (-1.53) Depth: 12/31 00:00:08 2496kN >46.Kc2 > -+ (-1.50) Depth: 12/31 00:00:12 3433kN >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 Qc1+ 49.Ka4 b5+ 50.cxb5 Qc2+ > ³ (-0.53) Depth: 12/36 00:00:23 6400kN >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 Qc1+ 49.Ka4 b5+ 50.cxb5 Qc2+ > ³ (-0.62) Depth: 13/34 00:00:33 9087kN >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 Qc1+ 49.Ka4 b5+ 50.cxb5 Qc2+ > µ (-0.91) Depth: 14/36 00:01:00 16487kN >46.Kc2-- > µ (-1.22) Depth: 15/37 00:01:15 20885kN >46.Kc2 Qd1+ 47.Kb2 Rd2+ 48.Ka3 Qc1+ 49.Ka4 b5+ 50.cxb5 Qc2+ > -+ (-8.75) Depth: 15/42 00:01:29 25534kN >46.Qd5 > -+ (-8.72) Depth: 15/42 00:01:49 31645kN >46.Qd5 Rxd5+ 47.cxd5 Qg5+ 48.Re3 Qxd5+ 49.Ke1 Qxa2 50.Rh3 Qd5 > -+ (-7.00) Depth: 15/42 00:06:46 112162kN > > >Chess Tiger 12.92 Beta; Cel 433, 48 Mb hash. >; 00:00:00.1 46. Score: -2.16 depth: 8 Rd4 Rxd4+ cxd4 Qxd4+ Ke1 Qc3+ >Kf2 Qxc4 Qxh5+ Kg7 Qg5+ Kf7 a3 >; 00:00:00.3 46. Score: -1.92 depth: 8 Rd4 Rxd4+ cxd4 Qxd4+ Ke1 Qc3+ >Kf2 Qxc4 Qxh5+ Kg7 Qg5+ Kf7 Qf5+ Ke7 Qh7+ Qf7+ >; 00:00:03.7 46. Score: -2.26 depth: 9 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kh6 c5 bxc5 >; 00:00:05.2 46. Score: -2.12 depth: 10 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kh6 e4 Qg3+ Ke2 Qg2+ Ke3 >; 00:00:21.8 46. Score: -2.04 depth: 10 Kc2 Qd1+ Kb2 Rd2+ Ka3 Qc1+ >Ka4 b5+ cxb5 Qc2+ Ka5 Qxc3+ Ka6 Rd6+ Kb7 Qg7+ Kc8 >; 00:00:25.5 46. Score: -2.04 depth: 11 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kh6 e4 Qg3+ Kc2 Qe5 Qa8 >; 00:00:34.8 46. Score: -2.06 depth: 12 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kh6 e4 Qg3+ Kc2 Qe5 Qa8 Qg7 >; 00:01:08.9 46. Score: -1.88 depth: 13 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kh6 Qd5 h4 c5 bxc5 Qxc5 a6 e4 >; 00:02:01.3 46. Score: -1.88 depth: 14 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kg6 a4 Qe5 Qg8+ Kh6 Qd8 Qg3+ e3 Qe5 >; 00:07:14.9 46. Score: -1.80 depth: 15 Rd4 cxd4 Qf6+ Kh7 Qe7+ Qg7 >Qxd8 dxc3+ Kd3 Kg6 a4 Qe5 Qa8 Qe7 e4 Qf6 Qxa7 Qf3+ > >; Analysis completed > > >Sarah. This is what Junior 6a makes of it; Analysis by Junior 6a 1.Kc2 Qd1+ 2.Kb2 Rd2+ 3.Ka3 Qc1+ 4.Kb3 µ (-1.19) Depth: 3 00:00:00 1.Kc2 Qd1+ 2.Kb2 Rd2+ 3.Ka3 Qc1+ 4.Ka4 Rxa2+ 5.Kb5 Qb1+ 6.Kc6 Rxe2 7.Qxh5+ -+ (-1.89) Depth: 6 00:00:00 3kN 1.Rd4 cxd4 2.Qf6+ Kh7 3.Qe7+ Qg7 4.Qxd8 dxc3+ 5.Kd3 Qg3+ 6.e3 -+ (-1.81) Depth: 6 00:00:00 9kN 1.Rd4 cxd4 2.Qf6+ Kh7 3.Qe7+ Qg7 4.Qxd8 dxc3+ 5.Kc2 Qe5 6.Qd3+ Kg7 7.Qxc3 Qxe2+ -+ (-1.77) Depth: 9 00:00:00 73kN 1.Kc2! -+ (-1.51) Depth: 9 00:00:00 133kN 1.Kc2 Qd1+ 2.Kb2 Rd2+ 3.Ka3 Qc1+ 4.Ka4 Rxa2+ 5.Kb5 Rb2+ 6.Kc6 Qh1 7.Qf8+ Kh7 8.Qf7+ Kh6 µ (-1.19) Depth: 9 00:00:00 176kN 1.Kc2! µ (-0.89) Depth: 12 00:00:02 802kN 1.Kc2 Qd1+ 2.Kb2 Rd2+ 3.Ka3 Qc1+ 4.Ka4 b5+ 5.cxb5 Rxa2+ 6.Kb3 Qc2+ 7.Kc4 Ra4+ 8.Kd5 Qxe4+ 9.Qxe4 Rxe4 10.Kxe4 ³ (-0.68) Depth: 12 00:00:04 1491kN 1.Kc2 Qd1+ 2.Kb2 Rd2+ 3.Ka3 Qc1+ 4.Ka4 b5+ 5.cxb5 Qc2+ 6.Ka5 Qxc3+ 7.Ka6 Rd6+ 8.Kb7 Qg7+ 9.Kb8 Rd8+ 10.Qc8 -+ (-9.41) Depth: 15 00:00:15 6088kN 1.Rd4 Rxd4+ 2.cxd4 Qxd4+ 3.Ke1 Qxc4 4.Qxh5+ Kg7 5.Qe5+ Kg6 6.Qd6+ Kf5 7.Qf8+ Ke5 8.Qg7+ Kd6 9.Qxa7 Qc1+ µ (-0.81) Depth: 15 00:01:17 31481kN, tb=128 1.Rd4 Rxd4+ 2.cxd4 Qxd4+ 3.Ke1 h4 4.Qf8+ Kh7 5.Qf7+ Kh6 6.Qxa7 Qf6 7.Qb7 h3 8.Qc7 Qc3+ 9.Kf2 Kg5 10.Qh2 µ (-0.76) Depth: 17 00:04:53 119048kN, tb=1773 Sarah.
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.