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Up Topic Rybka Support & Discussion / Rybka Discussion / Congratulatons to Rybka
- - By SR (****) Date 2007-07-22 22:15 Edited 2007-07-22 22:17
Another world championship under her belt! Rybka won the world championship in rapid chess with a near perfect score of 13/14.  Hiarcs8x (playing white) managed to win the individual game, but  where only able to reach 12/14 in the end.

Thanks to Henrik Dinesen for providing the link

http://64.68.157.89/forum/viewtopic.php?t=15295
Parent - - By Harvey Williamson (*****) Date 2007-07-22 22:21 Edited 2007-07-22 22:31
but  where only able to reach 12/14 in the end.

"ONLY" 12/14 yes we were only able to get 12/14 that is a terrible result?!

Well done vas on winning another title. rematch in October at Leiden. Shame it wont be in Mainz?!

Best Wishes,

Harvey
Parent - - By Banned for Life (Gold) Date 2007-07-23 01:48
12 of 14 is a fantastic result. Anyway, I would be really happy in any tournament where my engine won its game with Rybka, regardless of the rest of the results. :-)

Regards,
Alan
Parent - - By Harvey Williamson (*****) Date 2007-07-23 09:27
Thanks Alan,

A full crosstable and all the games are now available here http://www.taccl.org/2007PresResults.html

Best Wishes,

Harvey
Parent - - By M ANSARI (*****) Date 2007-07-23 12:23
Yes good result for Rybka ... not a single draw !!!  But I am looking at Rybka's lone loss to Hiarcs and we have this position

2r2k2/6Rp/p3pB2/rp1bPp1p/8/8/1n2BPP1/4R1K1 b - - 0 30


Here Rybka played Nd3 ??  I cannot reproduce this move at any time control.  I know this was rapid time control but still this seems like a one move loss.  White seems obviously better but Nd3 seems like some sort of bug.  I wonder what version of Rybka was played and what hardware?

Actually the wierdest thing happens ... as soon as white plays Be2 ... Rybka's nps goes to 0 Knps for almost 5 seconds!!!  Then it takes a while to get out of this sleep mode after a few seconds then it chooses Rc4.  Can anyone else reproduce this ... I am using 2.3.2a?
Parent - - By M ANSARI (*****) Date 2007-07-23 12:29 Edited 2007-07-23 12:31
Never mind ... looks like Rc4 also fails low at 17 ply, so it should not be a bug.  Maybe the 0 nps is because it sees a fail low ... still the behaviour seems very strange here.  Is it because the position just has many fail low situations or maybe is this some hash bug?  Or maybe Rybka is just smacking itself on the head for getting itself in a lost position ... man this thing is getting too human like!!!
Parent - - By Harvey Williamson (*****) Date 2007-07-23 12:37
Hi,

rapid but by no means blitz with 28 minutes each + a 1 second increment.

Hiarcs was on a QX6700 quad core. I believe Rybka was also on a QX6700.

I like the idea of Rybka smacking itself on the head maybe you should give it a talking to with your spear gun in hand ;-)

Best Wishes,

Harvey
Parent - By Vasik Rajlich (Silver) Date 2007-07-24 07:39
Yes, this game was played on my QX6700 at 3.2 GHz.

Vas
Parent - By Vasik Rajlich (Silver) Date 2007-07-24 07:38
Minimax can do weird-looking things in lost positions, it's just how that works. You have to step outside minimax to avoid it. Against an opponent like Hiarcs this anyway has no impact on the result.

Vas
Parent - - By Peter Grayson (****) Date 2007-07-23 17:01
Repeated at first attempt with 2.3.2a mp w32 512Mb hash on AMD 4800x2:
New game
2r2k2/6Rp/p3pB2/rp1bPp1p/8/8/1n2BPP1/4R1K1 b - - 0 1


Analysis by Rybka 2.3.2a mp 32-bit :

1...Rc2 2.Rxh7
  =  (0.11)   Depth: 5   00:00:00
1...Rc2 2.Bxh5 Rxf2 3.Rc1
  +-  (1.59)   Depth: 6   00:00:00  13kN
1...Rc4 2.Bxh5 h6 3.Rh7
  ²  (0.55)   Depth: 6   00:00:00  29kN
1...Rc4 2.Bxh5 h6 3.Rh7
  ²  (0.55)   Depth: 7   00:00:00  30kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2 5.Rc1
  ±  (0.74)   Depth: 8   00:00:00  45kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2 5.Rc1 Nc4
  ±  (0.82)   Depth: 9   00:00:00  57kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2 5.Rc1 Nc4 6.Rg7
  ²  (0.69)   Depth: 10   00:00:00  81kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rg7 Ra2 6.Rxh7 b4
  ±  (0.82)   Depth: 11   00:00:01  168kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 h5 5.Rg7 Nd3 6.Rd1 Nf4 7.Ra7
  ±  (0.80)   Depth: 12   00:00:01  271kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 h5 5.Rh4 Ra2 6.Re2 Ra1+ 7.Kh2 Nc4 8.Kg3
  ±  (0.75)   Depth: 13   00:00:02  441kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 h5 5.Rh4 Ra2 6.Re2 Ra1+ 7.Kh2 Nc4 8.Kg3
  ±  (0.74)   Depth: 14   00:00:05  833kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rc1 Ra2 6.Rc3 Re2 7.Kf1 Re4 8.Rxe4
  ±  (0.77)   Depth: 15   00:00:09  1638kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rb1 Ra2 6.Rg7 h5 7.Rg5 Be4 8.Rd1
  ±  (0.77)   Depth: 16   00:00:14  2384kN
1...Rc4 2.Bxh5 Rg4 3.Rc1 Ra1 4.Rf7+ Kg8 5.Rxa1 Rxg2+ 6.Kf1 Nd3 7.f3 Rh2 8.Rg7+
  +-  (2.47)   Depth: 17   00:00:22  3631kN
1...Rc4 2.Bxh5 Rg4 3.Rc1 Ra1 4.Rf7+ Kg8 5.Rxa1 Rxg2+ 6.Kf1 Nd3 7.f3 Nf4 8.Rc7
  +-  (3.64)   Depth: 18   00:00:43  6196kN
1...Nd3 2.Rxh7 Nf4 3.Rh8+ Kf7 4.Rxc8 Nxe2+ 5.Rxe2 Ra3 6.Rc7+ Kg6 7.Rg7+ Kh6 8.Rb2
  +-  (3.00)   Depth: 18   00:01:27  11862kN

(Grayson, Newport, South Wales 23.07.2007)

64 bit version the same:
New game
2r2k2/6Rp/p3pB2/rp1bPp1p/8/8/1n2BPP1/4R1K1 b - - 0 1


Analysis by Rybka 2.3.2a mp :

1...Rc2 2.Rxh7
  =  (0.11)   Depth: 5   00:00:00
1...Rc2 2.Bxh5 Rxf2 3.Kxf2 Nd3+ 4.Kf1
  +-  (2.04)   Depth: 6   00:00:00  20kN
1...f4 2.Bxh5 Be4
  ±  (1.40)   Depth: 6   00:00:00  37kN
1...Rc4 2.Bxh5 Rg4
  ±  (0.83)   Depth: 6   00:00:00  62kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2
  ²  (0.70)   Depth: 7   00:00:00  68kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2 5.Rc1
  ±  (0.80)   Depth: 8   00:00:00  73kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2 5.Rc1 Nc4
  ±  (0.77)   Depth: 9   00:00:00  82kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Ra2 5.Rc1 Nc4 6.Rg7
  ±  (0.81)   Depth: 10   00:00:00  100kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rg7 b4 6.Rb1 Rb5
  ±  (0.78)   Depth: 11   00:00:00  178kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 h5 5.Rh4 Ra2 6.f3 Nc4 7.Rxh5
  ±  (0.74)   Depth: 12   00:00:01  254kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rh4 b4 6.Rb1 Rb5 7.Rb3 a5
  ±  (0.72)   Depth: 13   00:00:02  590kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rb1 Ra2 6.Rg7 h5 7.Rg5 Be4 8.Rd1
  ±  (0.84)   Depth: 14   00:00:03  992kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rb1 Ra2 6.Rg7 h5 7.Rg5 Be4 8.Rd1
  ±  (0.88)   Depth: 15   00:00:05  1372kN
1...Rc4 2.Bxh5 Rg4 3.Bxg4 fxg4 4.Rxg4 Nc4 5.Rb1 Ra2 6.Rg7 h5 7.Rg5 Be4 8.Rd1
  ±  (0.87)   Depth: 16   00:00:07  1984kN
1...Rc4 2.Bxh5 Rg4 3.Rc1 Ra1 4.Rf7+ Kg8 5.Rxa1 Rxg2+ 6.Kf1 Nd3 7.f3 Rh2 8.Rg7+
  +-  (2.47)   Depth: 17   00:00:15  3972kN
1...Rc4 2.Bxh5 Rg4 3.Rc1 Ra1 4.Rf7+ Kg8 5.Rxa1 Rxg2+ 6.Kf1 Nd3 7.f3 Nf4 8.Rc7
  +-  (3.64)   Depth: 18   00:00:29  6715kN
1...Nd3 2.Rxh7 Nf4 3.Rh8+ Kf7 4.Rxc8 Nxe2+ 5.Rxe2 Ra3 6.Rb8 Bc4 7.Rd2 Bd5 8.Rc2
  +-  (3.16)   Depth: 18   00:01:05  15352kN

(Grayson, Newport, South Wales 23.07.2007)

regards,
PeterG
Parent - By SR (****) Date 2007-07-23 18:40
Actually Nd3 did not surprise me! The position is completely lost. Black is trying to tempt white to waste time taking the knight. Instead White went for the black king.

We have to go further back in the game if we are to improve blacks play.
Parent - By Vasik Rajlich (Silver) Date 2007-07-24 07:41
Thanks Harvey. Good luck in Leiden :)

Vas
Parent - - By RFK (Gold) Date 2007-07-23 17:50
Rybka is a tribute to your genius, Vas, and a hallmark to computer chess in general.

Congratulations,

Robert
Parent - - By FWCC (***) Date 2007-07-23 18:32
We need Vas's input here.Vas why did Rybka play Nd3?I was shocked to see this move.What hardware was used?Rybka truly is remarkable to achieve such a score in spite of losing one game.I know we have not checked all the nuances of this move.
Parent - - By Fulcrum2000 (****) Date 2007-07-23 18:40
As M ANSARI already said, Rybka had a totally losing position at that time (Nd3 is not a real bad move in this position as all other moves are losing also). The bad move has been made earlier.
Parent - - By Fulcrum2000 (****) Date 2007-07-23 18:48 Edited 2007-07-23 19:04
Probably Nb2 or the move before that one. It's a real nice game for the bookmakers ;)
Parent - By Fulcrum2000 (****) Date 2007-07-23 22:31
I did some more analysing and the bad move was made much earlier in the game. I'm even wondering if it was a book move?.
Parent - By Lee Ma Hong (**) Date 2007-07-24 00:55
IMO 15 ... g6 and 16 ... Bxc3 left black's kingside with dark square weaknesses, so these are strategic blunders
Parent - By theoak (**) Date 2007-07-24 04:24
Correct!
Parent - - By BigBen (****) Date 2007-07-23 18:35
Congrats to Vas and the Hiarcs chaps .... Hiarcs chaps always seem willing to play Rybka unlike certain Fritz and Junior prorammers

Regards
Parent - By RFK (Gold) Date 2007-07-23 18:59
That's the truth! I give Hiarcs a lot of credit.

How can ChessBase continue to eulogies Fritz and Junior when they don't play tournaments-it starts to ring hollow after a while!

Best Wishes,

Sidserious
Parent - By Vasik Rajlich (Silver) Date 2007-07-24 07:37
Thanks.

This one was really a photo finish, it was dead even going into the last round. I have to admit that Hiarcs would also have been a worthy winner here.

Vas
Up Topic Rybka Support & Discussion / Rybka Discussion / Congratulatons to Rybka

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