Author: Brian Richardson
Date: 06:13:23 11/05/00
Go up one level in this thread
On November 04, 2000 at 22:51:34, Uri Blass wrote:
>[D]Q3b3/3k1p2/4p2P/3pP3/1q6/8/Q5K1/8 b - - 0 1
>
>I believe that in this position black can force perpetual check by Qe4+
>
>How much time do chess programs need to see the perpetual check(I did not prove
>that there is a perpetual check but comp-comp games from this position ended in
>a draw).
><snip>
Not sure if this is suboptimal for black or not, but Tinker thinks the following
is a draw, given the assumed line shown:
force
qe4 {your suggestion, and then Tinker's preferred moves when only searched to
fairly shallow depths, e.g., less than 1 minute each}
kf1
qh1
ke2
qh2
{and then}
go
ply score time nodes pv
6 611 0.83 225534 3. e2d1 h2h1 4. d1c2 h1e4 5. c2d2 e4f4
6. d2d1 f4f1 7. d1c2 f1f5 8. c2c3 d7e7
6-> 611 1.69 465902 3. e2d1 h2h1 4. d1c2 h1e4 5. c2d2 e4f4
6. d2d1 f4f1 7. d1c2 f1f5 8. c2c3 d7e7
7 611 1.81 500816 3. e2d1 h2h1
7-> 611 2.28 625518 3. e2d1 h2h1
8 472 6.92 1980594 3. e2d1 h2h1 4. d1c2 h1e4 5. c2d2 e4f4
6. d2d1 f4f1 7. d1c2 f1f2 8. c2c3 f2e3
9. c3b4 e3e1 10. b4c5
8-> 472 35.28 10308022 3. e2d1 h2h1 4. d1c2 d1c2 5. c2d2 e4f4
6. d2d1 f4f1 7. d1c2 f1f2 8. c2c3 f2e3
9. c3b4 e3e1 10. b4c5
9 472 37.24 10870972 3. e2d1 h2h1
9-> 472 37.25 10870982 3. e2d1 h2h1
10 0 1:46 34084265 3. e2d1 h2h1 4. d1c2 h1e4 5. c2d2 e4f4
6. d2d1 f4f1 7. d1c2 f1f2 8. c2c3 f2e3
9. c3b4 e3b6 10. b4c3 b6e3
10-> 0 2:54 56649987 3. e2d1 h2h1 4. d1c2 h1e4 5. c2d2 e4f4
6. d2d1 f4f1 7. d1c2 f1f2 8. c2c3 d5d4
9. e3g5 e3b6 10. b4c3 b6e3
11 0 3:30 68681697 3. e2d1 h2h1
11-> 0 3:30 68681707 3. e2d1 h2h1
Brian
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.