Author: Terry McCracken
Date: 08:15:08 11/25/02
Go up one level in this thread
On November 25, 2002 at 10:52:23, Uri Blass wrote: >On November 25, 2002 at 10:14:27, Terry McCracken wrote: > >>On November 25, 2002 at 00:29:56, John Merlino wrote: >> >>>On November 24, 2002 at 23:56:30, Terry McCracken wrote: >>> >>>>[D]8/4p3/4Q3/8/8/k1p3PP/1q3P1K/8 w - - 0 1 >>>> >>>>This is reposted as it was given little attention. >>>> >>>> >>>>http://www.talkchess.com/forums/1/message.html?266990 >>> >>>Chessmaster 9000, on a P3-733, gives up on Qxe7+ in two seconds: >>> >>>Time Depth Score Positions Moves >>>0:00 1/3 0.20 5091 1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Qf6 >>>0:00 1/4 0.20 10263 1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Qe1+ Qc1 >>> 4.Qe5 >>>0:00 1/5 0.18 25204 1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Qe1+ Ka2 >>> 4.h4 c2 5.Qe6+ Kb1 >>>0:00 1/6 0.00 64218 1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Qe1+ Ka2 >>> 4.Qe6+ >>>0:02 1/7 -0.18 154813 1.Qxe7+ Ka2 2.Qe6+ Qb3 3.Qa6+ Kb1 >>> 4.h4 c2 5.Qg6 Qc3 6.f4 >>>0:02 1/7 0.00 206769 1.Qa6+ Kb4 2.Qb7+ Kc4 3.Qe4+ Kb3 >>> 4.Qe6+ Ka4 5.Qc6+ Kb3 6.Qe6+ >>>0:03 2/8 0.00 296235 1.Qa6+ Kb4 2.Qb7+ Kc4 3.Qe4+ Kb3 >>> 4.Qe6+ Ka4 5.Qc6+ Kb3 6.Qe6+ >>>0:07 3/9 0.00 624641 1.Qa6+ Kb4 2.Qb7+ Kc4 3.Qe4+ Kb3 >>> 4.Qe6+ Ka4 5.Qc6+ Kb3 6.Qe6+ >>> >>>jm >> >>Yes, the only way to draw is Qa6+!! CM 9000 is Stong! >> >> >>1. Qxe7+ Ka2 2. Qe6+ Kb1 3. Qe4+ c2 is dead lost for White! >> >>1. Qxe7+ Ka2 2. Qe6+ >>( 2. Qa7+) >>2... Kb1 3. Qe4+ >>( 3. Qe1+ Qc1 ) >>3... c2 4. Qe1+ >> >>Terry > >After >1.Qxa7+Ka2 2.Qe6+ Kb1 3.Qe4+ c2 > >Yace can see only a draw score. > > >New position >[D]8/8/8/8/4Q3/6PP/1qp2P1K/1k6 w - - 0 1 > >Analysis by Yace 0.99.56: > >4.Qe4xc2+ Kb1xc2 > -+ (-6.10) Depth: 1 00:00:02 >4.f2-f4 > +- (2.14) Depth: 1 00:00:02 >4.f2-f4 Kb1-c1 > +- (2.00) Depth: 2 00:00:02 >4.f2-f4 Kb1-a1 5.Qe4-a4+ Ka1-b1 > +- (2.13) Depth: 3 00:00:02 >4.f2-f4 Kb1-a1 5.Qe4-a4+ Ka1-b1 6.Qa4-e4 > = (0.00) Depth: 4 00:00:02 >4.f2-f4 Kb1-a1 5.Qe4-a4+ Ka1-b1 6.Qa4-e4 Kb1-a1 7.Qe4-a4+ Ka1-b1 8.Qa4-e4 > = (0.00) Depth: 4 00:00:02 >4.h3-h4 Kb1-a1 5.Qe4-a4+ Ka1-b1 > = (0.01) Depth: 4 00:00:02 >4.h3-h4 Kb1-a1 5.Qe4-a4+ Ka1-b1 6.Qa4-e4 Kb1-a1 > = (0.01) Depth: 4 00:00:02 >4.g3-g4 Kb1-a1 5.Qe4-a4+ Ka1-b1 > = (0.02) Depth: 4 00:00:02 >4.g3-g4 Kb1-a1 5.Qe4-a4+ Ka1-b1 6.Qa4-e4 Kb1-a1 > = (0.02) Depth: 4 00:00:02 >4.Qe4-f5 Kb1-a1 5.Qf5-a5+ Ka1-b1 > = (0.03) Depth: 4 00:00:02 >4.Qe4-f5 Kb1-a1 5.Qf5-a5+ Ka1-b1 6.Qa5-d5 c2-c1Q 7.h3-h4 > = (0.03) Depth: 4 00:00:02 >4.Qe4-g6 Kb1-a1 5.Qg6-a6+ Ka1-b1 > = (0.04) Depth: 4 00:00:02 >4.Qe4-g6 Qb2-a3 5.f2-f4 Qa3-f3 > +- (1.79) Depth: 4 00:00:02 >4.Qe4-d3 Kb1-c1 > +- (1.80) Depth: 4 00:00:02 >4.Qe4-d3 Kb1-a2 5.Qd3-d5+ Ka2-a3 6.Qd5-a5+ Ka3-b3 7.Qa5-b5+ Kb3-c3 > +- (1.83) Depth: 4 00:00:02 >4.Qe4-d3 Kb1-a2 5.Qd3-d5+ Ka2-a3 6.Qd5-a5+ Ka3-b3 7.Qa5-b5+ Kb3-c3 8.Qb5-e5+ >Kc3-b3 9.Qe5-e3+ Kb3-c4 10.Qe3-e6+ Kc4-c3 11.Qe6-e5+ Kc3-b3 12.Qe5-b8+ Kb3-c3 >13.Qb8-e5+ > +- (1.76) Depth: 5 00:00:02 15kN >4.Qe4-d3 Kb1-a2 5.Qd3-d5+ Ka2-a3 6.Qd5-a5+ Ka3-b3 7.Qa5-b5+ Kb3-c3 8.Qb5-e5+ >Kc3-b3 9.Qe5-e3+ Kb3-c4 10.Qe3-e4+ Kc4-c3 11.Qe4-e5+ Kc3-b3 12.Qe5-e3+ Kb3-c4 >13.Qe3-e4+ Kc4-c3 14.Qe4-e5+ > +- (1.71) Depth: 6 00:00:02 38kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-c6 c2-c1Q 7.Qc6-f6 > ± (1.31) Depth: 7 00:00:02 88kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-g6 Kb1-a1 7.Qg6-a6+ Ka1-b1 8.Qa6-g6 >Kb1-a2 9.Qg6-f7+ Ka2-b1 10.Qf7-f5 Kb1-a1 11.Qf5-a5+ Ka1-b1 > = (0.00) Depth: 7 00:00:02 88kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-g6 Kb1-a2 7.Qg6-a6+ Ka2-b1 8.Qa6-g6 >Kb1-a2 9.Qg6-a6+ Ka2-b1 > = (0.00) Depth: 8 00:00:03 143kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-g6 Kb1-a2 7.Qg6-a6+ Ka2-b1 8.Qa6-g6 >Kb1-a2 9.Qg6-a6+ Ka2-b1 > = (0.00) Depth: 9 00:00:03 229kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-g6 Kb1-a2 7.Qg6-a6+ Ka2-b1 8.Qa6-g6 >Kb1-a2 9.Qg6-a6+ Ka2-b1 > = (0.00) Depth: 10 00:00:03 434kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-g6 Kb1-a2 7.Qg6-a6+ Ka2-b1 8.Qa6-g6 >Kb1-a2 9.Qg6-a6+ Ka2-b1 > = (0.00) Depth: 11 00:00:04 948kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-g6 Kb1-a2 7.Qg6-a6+ Ka2-b1 > = (0.00) Depth: 12 00:00:07 1816kN >4.Qe4-d3 Kb1-a1 5.Qd3-a6+ Ka1-b1 6.Qa6-d3 > = (0.00) Depth: 14 00:00:35 12790kN >4.Qe4-d3 Qb2-e5 5.h3-h4 Kb1-b2 6.Qd3-d2 Qe5-c3 7.Qd2-e2 Kb2-a2 > = (-0.01) Depth: 16 00:05:21 119886kN >4.Qe4-f5 Qb2-d4 5.Kh2-g2 Kb1-b2 6.Qf5-b5+ Kb2-a3 7.Qb5-a5+ Ka3-b3 8.Qa5-b5+ >Kb3-c3 9.Qb5-a5+ Kc3-d3 10.Qa5-a6+ Qd4-c4 11.Qa6-a3+ Kd3-d2 12.Qa3-d6+ Kd2-e2 >13.Qd6-e7+ Ke2-d1 14.Qe7-d7+ Kd1-e1 15.Qd7-e7+ Ke1-d2 16.Qe7-e3+ Kd2-d1 >17.Qe3-f3+ Qc4-e2 18.Qf3-b3 Kd1-d2 19.Qb3-b4+ > = (0.00) Depth: 16 00:07:35 171272kN >4.Qe4-f5 Qb2-d4 5.Kh2-g2 > = (0.00) Depth: 16 00:07:39 172785kN > >(Blass, Tel-aviv 25.11.2002) > >Can you convince yace by going backward that Qxe7+ is losing? >If you can then what is your tree? > >Uri You figure it out Uri.
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.