Discussion of anything and everything relating to chess playing software and machines.
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swami
Posts: 6662 Joined: Thu Mar 09, 2006 4:21 am
Post
by swami » Tue Oct 21, 2008 7:11 pm
JuLieN wrote: rlsuth wrote: Terry McCracken wrote:
Anand blundered! 41. Rxg7+! wins easily.
I'm probably being pedantic here, but I've always thought of a blunder as being a losing move and that this is just an inaccuracy.
It appears that the new definition of a blunder is "move that causes a severe score drop in engine analysis (more than 1 point drop)"
Ofcourse, someone said it "inaccuracy" - but english ain't my first language! (humble me, humble you!)
Uri Blass
Posts: 10895 Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel
Post
by Uri Blass » Tue Oct 21, 2008 7:12 pm
swami wrote: Anil wrote: Is Anand doing this deliberately ... to give Kramnik some hope?
Playing fxg7 instead of Rxg7.
I am sure after this game, Anand will re-work on his chess tactics.
.... Kg8 played.
Looks like both these Super-Grandmasters are making big big blunders almost every single move according to engines...
Terry, so you still think GM's are better in timed games?
I agree that engines are better than humans but white is always winning here and it is possible that anand could win against rybka here with white.
If you have a winning position then it is important to find moves that are good enough to win and it is not important to find the best move.
Uri
Anil
Posts: 540 Joined: Sat Nov 11, 2006 2:56 pm
Post
by Anil » Tue Oct 21, 2008 7:12 pm
Ted, any info on whats going on? Some snaps too, if you feel generous (as always).
swami
Posts: 6662 Joined: Thu Mar 09, 2006 4:21 am
Post
by swami » Tue Oct 21, 2008 7:14 pm
Uri Blass wrote: swami wrote: Anil wrote: Is Anand doing this deliberately ... to give Kramnik some hope?
Playing fxg7 instead of Rxg7.
I am sure after this game, Anand will re-work on his chess tactics.
.... Kg8 played.
Looks like both these Super-Grandmasters are making big big blunders almost every single move according to engines...
Terry, so you still think GM's are better in timed games?
I agree that engines are better than humans but white is always winning here and it is possible that anand could win against rybka here with white.
If you have a winning position then it is important to find moves that are good enough to win and it is not important to find the best move.
Uri
If Anand keeps finding 2nd - 3rd best candidate moves every single turn I think it may even backfire and end in draw who knows...
Last edited by swami on Tue Oct 21, 2008 7:14 pm, edited 1 time in total.
Terry McCracken
Posts: 16465 Joined: Wed Aug 01, 2007 4:16 am
Location: Canada
Post
by Terry McCracken » Tue Oct 21, 2008 7:14 pm
swami wrote: Anil wrote: Is Anand doing this deliberately ... to give Kramnik some hope?
Playing fxg7 instead of Rxg7.
I am sure after this game, Anand will re-work on his chess tactics.
.... Kg8 played.
Looks like both these Super-Grandmasters are making big big blunders almost every single move according to engines...
Terry, so you still think GM's are better in timed games?
In overall play while not under stress, yes! Kramnik played an unusually bad game and Anand for some reason didn't give his last move enough thought or looked at something else that is winning but not the most efficient way of course.
Terry McCracken
rlsuth
Posts: 322 Joined: Wed Mar 08, 2006 9:37 pm
Post
by rlsuth » Tue Oct 21, 2008 7:14 pm
Uri Blass wrote:
If you have a winning position then it is important to find moves that are good enough to win and it is not important to find the best move.
Uri
Plus, in two lines that lead to identical wins, the computer might have much higher scores on the line that gathers material as it goes.
swami
Posts: 6662 Joined: Thu Mar 09, 2006 4:21 am
Post
by swami » Tue Oct 21, 2008 7:15 pm
Anil wrote: Ted, any info on whats going on? Some snaps too, if you feel generous (as always).
Anand,V - Kramnik,V, WCC 2008 Bonn 2008
[d] 2r3k1/6Pp/1n6/4P3/p1n1N3/P2R3P/3B4/4K3 w - - 0 1
Analysis by bright-0.3a:
Code: Select all
43.e6 Ne5 44.Rd6 Nf3+ 45.Kd1 Nxd2 46.Rxd2 Kxg7 47.Nd6 Kf6 48.Nxc8 Nxc8 49.Re2 Ke7 50.Kd2 Nd6 51.Kd3 Nb5 52.Re4 Nxa3 53.Rxa4
+- (4.25) Depth: 17/49 00:00:09 62943kN
43.e6 Ne5 44.Rd6 Nf3+ 45.Kd1 Nxd2 46.Nxd2 Na8 47.Ne4 Rc4 48.Ng3 Rc5 49.Rd8+ Kxg7 50.Rxa8 Rd5+ 51.Ke2 Kf6 52.Rxa4 Kxe6 53.Ke3 Rd1 54.h4
+- (4.45) Depth: 18/65 00:00:36 239mN
Anil
Posts: 540 Joined: Sat Nov 11, 2006 2:56 pm
Post
by Anil » Tue Oct 21, 2008 7:17 pm
Anand,V - Kramnik,V
WCC 2008 Bonn (6), 2008
[Robot 2]
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 Qxd5 6.Nf3 Qf5 7.Qb3 Nc6 8.Bd2 0-0 9.h3 b6 10.g4 Qa5 11.Rc1 Bb7 12.a3 Bxc3 13.Bxc3 Qd5 14.Qxd5 Nxd5 15.Bd2 Nf6 16.Rg1 Rac8 17.Bg2 Ne7 18.Bb4 c5 19.dxc5 Rfd8 20.Ne5 Bxg2 21.Rxg2 bxc5 22.Rxc5 Ne4 23.Rxc8 Rxc8 24.Nd3 Nd5 25.Bd2 Rc2 26.Bc1 f5 27.Kd1 Rc8 28.f3 Nd6 29.Ke1 a5 30.e3 e5 31.gxf5 e4 32.fxe4 Nxe4 33.Bd2 a4 34.Nf2 Nd6 35.Rg4 Nc4 36.e4 Nf6 37.Rg3 Nxb2 38.e5 Nd5 39.f6 Kf7 40.Ne4 Nc4 41.fxg7 Kg8 42.Rd3 Ndb6 43.Bh6 Nxe5 44.Nf6+ Kf7 45.Rc3 Rxc3 46.g8Q+ Kxf6 47.Bg7+ Line
swami
Posts: 6662 Joined: Thu Mar 09, 2006 4:21 am
Post
by swami » Tue Oct 21, 2008 7:17 pm
Anand,V - Kramnik,V, WCC 2008 Bonn 2008
[d] 6Q1/6Bp/1n3k2/4n3/p7/P1r4P/8/4K3 b - - 0 1
Analysis by bright-0.3a:
Code: Select all
47...Ke7 48.Qxh7 Nf3+ 49.Kd1 Rb3 50.Bd4+ Kd6 51.Bxb6 Rxb6 52.Qd3+ Kc5 53.Qxf3
+- (5.35) Depth: 7/17 00:00:00 53kN
47...Ke7 48.Qxh7 Nf3+ 49.Kd1 Rb3 50.Bd4+ Kd6 51.Bxb6 Rxb6 52.Qd3+ Kc5 53.Qc3+ Kd5 54.Qxf3+ Ke5
+- (5.44) Depth: 8/19 00:00:00 53kN
47...Ke7 48.Qxh7 Nf3+ 49.Kd1 Rb3 50.Bd4+ Kd6 51.Bxb6 Rxb6 52.Qd3+ Kc5 53.Qc3+ Kd5 54.Qxf3+ Ke5
+- (5.44) Depth: 9/20 00:00:00 53kN
47...Ke7 48.Qxh7 Nf3+ 49.Kd1 Rb3 50.Bd4+ Kd6 51.Bxb6 Rxb6 52.Qd3+ Kc5 53.Qc3+ Kd6 54.Qxf3 Rb3 55.Qf4+ Kd5 56.Qxa4 Rxh3
+- (5.45) Depth: 10/31 00:00:00 301kN
47...Ke7 48.Qxh7 Nf3+ 49.Kd1 Rb3 50.Bd4+ Kd6 51.Bxb6 Rxb6 52.Qd3+ Kc7 53.Qxf3 Rb3 54.Qf4+ Kd8 55.Qxa4 Rxh3
+- (5.51) Depth: 11/34 00:00:00 2617kN
47...Ke7 48.Qxh7 Nf3+ 49.Kd1 Rb3 50.Bd4+ Kd6 51.Bxb6 Rxb6 52.Qd3+ Kc5 53.Qxf3 Rd6+ 54.Ke2 Rd4 55.Qf5+ Kc4 56.Qe6+ Kc3 57.Qc6+ Kb2
+- (5.61) Depth: 12/35 00:00:01 10144kN
47...Ke7 48.Qxh7 Re3+ 49.Kf2 Rf3+ 50.Kg2 Rf7 51.Qh4+ Ke6 52.Qh6+ Kd5 53.Bxe5 Nc4 54.Bc3 Rf5 55.Qg6 Ne3+ 56.Kg3
+- (5.80) Depth: 13/44 00:00:05 34660kN
AdminX
Posts: 6363 Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA
Post
by AdminX » Tue Oct 21, 2008 7:17 pm
[Event "World Chess Championship 2008"]
[Site "Bonn"]
[Date "2008.10.21"]
[Round "6"]
[White "Anand, Viswanathan"]
[Black "Kramnik, Vladimir"]
[Result "*"]
[WhiteElo "2783"]
[BlackElo "2772"]
[PlyCount "89"]
[EventDate "2008.10.21"]
[EventRounds "6"]
[EventCountry "GER"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 Qxd5 6. Nf3 Qf5 7. Qb3 Nc6 8.
Bd2 O-O 9. h3 b6 10. g4 Qa5 11. Rc1 Bb7 12. a3 Bxc3 13. Bxc3 Qd5 14. Qxd5 Nxd5
15. Bd2 Nf6 16. Rg1 Rac8 17. Bg2 Ne7 18. Bb4 c5 19. dxc5 Rfd8 20. Ne5 Bxg2 21.
Rxg2 bxc5 22. Rxc5 Ne4 23. Rxc8 Rxc8 24. Nd3 Nd5 25. Bd2 Rc2 26. Bc1 f5 27. Kd1
Rc8 28. f3 Nd6 29. Ke1 a5 30. e3 e5 31. gxf5 e4 32. fxe4 Nxe4 33. Bd2 a4 34.
Nf2 Nd6 35. Rg4 Nc4 36. e4 Nf6 37. Rg3 Nxb2 38. e5 Nd5 39. f6 Kf7 40. Ne4 Nc4
41. fxg7 Kg8 42. Rd3 Ndb6 43. Bh6 Nxe5 44. Nf6+ Kf7 45. Rc3 *
[d]2r5/5kPp/1n3N1B/4n3/p7/P1R4P/8/4K3 b - - 0 45
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers