Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Testposition King Safety ( or maybe something else)

Author: John Merlino

Date: 13:04:05 08/28/01

Go up one level in this thread


On August 27, 2001 at 19:19:13, Peter Berger wrote:

>Just came across this one:
>
>[D] 7r/Q2k1ppp/2b1p3/8/6q1/2B5/5PPP/2R3K1 b - - 0 1 am Ke8
>
>Here black has to play Kd6 and this should take not much time. Ke8 loses without
>any resistance.
>
>Very interesting differences between the engines . For example Fritz solves this
>in 0 seconds and Yace and many others will need several _minutes_. In general
>this one seems to be very tough for the amateurs . Shredder has a hard time,
>too.
>
>This is move 27 out of an ICC blitz game :
>
>[Event "ICS Match (Partie in 4 Minuten + 3 Sekunde(n) pro Zug)"]
>[Site "unbekannt"]
>[Date "2001.08.27"]
>[Round "1"]
>[White "Bringer1.9ß05"]
>[Black "Yace(C)"]
>[Result "1-0"]
>[WhiteElo "2812"]
>[BlackElo "2929"]
>
>1. d4  { 0.00 0:00:00.0 } d5  2. c4  { 0.00 0:00:00.0 } dxc4
>3. Nf3  { 0.00 0:00:00.0 } Nf6  4. e3  { 0.00 0:00:00.0 } e6
>5. Bxc4  { 0.00 0:00:00.0 } c5  6. O-O  { 0.00 0:00:00.0 } a6
>7. Qe2  { 0.00 0:00:00.0 } b5  8. Bb3  { 0.00 0:00:00.0 } Bb7
>9. a4  { 0.00 0:00:00.0 } Nbd7  10. axb5  { 0.00 0:00:00.0 } axb5
>11. Rxa8  { 0.00 0:00:00.0 } Qxa8  12. Nc3  { 0.00 0:00:00.0 }
>b4  13. Nb5  { 0.00 0:00:00.0 } Qb8  14. e4  { 0.00 0:00:00.0 }
>cxd4  15. Nbxd4  { 0.00 0:00:00.0 } Be7  16. Bg5  { 0.00 0:00:00.0 }
>Nxe4  17. Ba4  { 0.00 0:00:00.0 } Bd5  18. Bxd7+  { 0.00 0:00:00.0 }
>Kxd7  19. Ne5+  { 0.00 0:00:00.0 } Qxe5  20. Qb5+  { 0.00 0:00:00.0 }
>Kc7  21. Bxe7  { 0.00 0:00:00.0 } Qxd4  22. Rc1+  { 0.00 0:00:00.0 }
>Nc3  23. bxc3  { 0.00 0:00:00.0 } bxc3  24. Bb4  { 0.00 0:00:00.0 }
>Bc6  25. Qa5+  { 0.00 0:00:00.0 } Kd7  26. Bxc3  { 0.00 0:00:00.0 }
>Qg4  27. Qa7+  { 0.00/10 0:00:09.7 } Ke8  28. f3  { 3.62/11 0:01:09.8 (PB:
>0:01:09.7 ) }
>Bxf3  29. g3  { 4.11/10 0:00:01.7 } Qe4  30. Bxg7  { 4.43/10 0:00:13.7 (PB:
>0:00:13.6 ) }
>Qb7  31. Qa4+  { 4.49/11 0:00:11.3 } Ke7  32. Bxh8  { 4.55/11 0:00:12.8 }
>Bh1  33. Qc2  { 4.64/10 0:00:15.7 (PB: 0:00:02.2 ) } h5  34. Rb1  { 5.41/10
>0:00:07.2 }
>Qc6  35. Qf2  { 8.34/11 0:00:39.8 (PB: 0:00:39.6 ) } e5  36. Qa7+  { 9.08/11
>0:00:14.0 (PB: 0:00:13.8 ) }
>Qd7
>{Yace resigns}1-0

Chessmaster 8000, on a PIII-600, never considers anything other than Kd6:

Time	Depth	Score	Positions	Moves
0:00	1/4	0.00	9103		1...Kd6 2. Qa3+ Kd7 3. Qa7+
0:00	2/5	0.00	31186		1...Kd6 2. Qa3+ Kd7 3. Qa7+
0:01	2/6	0.00	120820		1...Kd6 2. Qa3+ Kd7 3. Qa7+
0:03	3/7	0.00	270882		1...Kd6 2. Qa3+ Kd7 3. Qa7+
0:10	3/8	0.00	905100		1...Kd6 2. Qa3+ Kd7 3. Qa7+
1:02	4/9	0.11	5217414		1...Kd6 2. f3 Bxf3 3. Qb6+ Kd7
					4. Qf2 Bxg2 5. Qxg2 Qxg2+ 6. Kxg2
					Rc8 7. Rd1+ Ke7 8. Rd3 f6 9. Kf3
					Rc4 10. Ke2
3:20	5/10	0.10	16979866	1...Kd6 2. f3 Bxf3 3. Qb6+ Kd7
					4. Qf2 Bxg2 5. Qxg2 Qxg2+ 6. Kxg2
					Rc8 7. Rd1+ Ke7 8. Rd3 f6 9. Bb4+
					Ke8 10. Kf3 Rc2 11. Rd2



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.