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Subject: Re: Glaurung in Mainz: Part 1 (very long)

Author: Uri Blass

Date: 17:40:00 08/13/05

Go up one level in this thread


On August 13, 2005 at 18:28:25, Tord Romstad wrote:

>I came back from the FRC world championship earlier tonight.  In the
>hope that somebody will find it entertaining, I post this diary of my
>experiences from Mainz.  I hope that many of the other participants in
>Mainz and Reykjavík will do the same.
>
>This is part 1 of the diary, which covers the first four rounds.  I'll
>post part 2, covering the last three rounds, some time tomorrow.
>
>Day 0 (2005-08-10):
>
>After a long and tiring journey, I finally arrive in Mainz on
>Wednesday night, and manage to find the hotel and the playing hall
>without any particular adventures.  To my disappointment, the other
>programmers have already left, but Mark Vogelgesang (who did a
>flawless job in organising the tournament) is there to wish me welcome
>and give me one of the Windows XP computers supplied by the hardware
>sponsor.  I am relieved to see that the computer accepts my USB memory
>stick, and that installation of Glaurung and the Shredder Classic GUI
>is unproblematic.  After spending a couple of minutes scratching my
>head while trying to find out how to change the main engine in the
>Shredder GUI, I finally discover the trick and verify that Glaurung
>works correctly.  I was a bit worried that my total lack of experience
>with Windows in general and the Shredder GUI in particular would be
>a problem, but so far everything seems OK.
>
>Day 1 (2005-08-11):
>
>In the elevator on my way to breakfast, I finally meet the first
>programmer: Jaime (Ayito).  During breakfast we are joined by several
>others, including Anastasios (AICE), Franck (Pharaon) and Richard
>(Baron).  Everybody turns out to be even nicer in person than online.
>Breakfast is followed by a short player's meeting discussing the
>tournament rules, and shortly after the pairings for round 1 are
>presented.  Glaurung is seeded unexpectedly low (number 11 of 19), and
>is paired against second seeded List in the first round.  I don't
>complain, because white against one of the favorites is never a bad
>way to start a tournament.
>
>Round 1: Glaurung - List
>[D]bqnrkbnr/pppppppp/8/8/8/8/PPPPPPPP/BQNRKBNR w HDhd - 0 1
>
>List has always been a somewhat mysterious and enigmatic engine to me,
>because the author is not active in any of the online computer chess
>forums.  It was therefore a great pleasure to meet Fritz Reul in
>person and have the opportunity to ask a few questions about his
>engine.  Fritz is a modest, soft-spoken, friendly and intelligent
>young man.  For those who are interested in news about List, I can
>tell you that the program has been completely rewritten since version
>5.12.  Fritz is not sure how big the improvement in strength is.
>There are currently no plans of a new public version.
>
>Like most of the favorites, List did not use a PC from the hardware
>sponsor, but some fast Athlon computer (I don't remember exactly).
>List is absurdly fast, searching about 2.5 million nodes/second in the
>middle game, IIRC.
>
>1. e3 b5 2. b4 e6 3. Nf3 Bxf3 4. gxf3 Nge7 5. Rg1 Ng6 6. f4 f6 7. a3
>Nh4 9. Bh5+ Ke7 10. Ne2 Nf3+ 11. Bxf3 Qxf3 12. d3 Qh3 13. c4 Qxh2
>14. cxb5
>[D]2nr1b1r/p1ppk1pp/4pp2/1P6/1P3P2/P2PP3/4NP1q/BQ1RK1R1 b GD - 0 14
>Both programs are very happy about the outcome of the opening, and
>believe they have a clear advantage.  Glaurung is optimistic because
>of its superior mobility, List probably prefers black because of
>white's somewhat compromised pawn structure and lack of a good place
>for the king.  I suspect that List's evaluation is closer to the
>truth.
>
>14... Nb6 15. Rc1 Rc8 16. Qb3 Kf7 17. f5 Bd6 18. fxe6+ dxe6 19. e4 Qh3
>20. Rc3 Qh5 21. Rc6 Rce8 22. Qc3 Nd7 23. Nd4 Qh2 24. Nf3 Qh6 25. d4
>Nb6 26. Qc2 Bf4 27. a4 Re7 28. a5 Nc8 29. Rc5 Bd6 30. Rc4 Qh5 31. Qb3
>Bf4 32. Rc5 Qh6 33. Rg4 Bd6 34. Rc4 Rd7 35. e5 fxe5 36. Rh4 Qg6
>[D]2n4r/p1pr1kpp/3bp1q1/PP2p3/1PRP3R/1Q3N2/5P2/B3K3 w - - 0 37
>37. Kf1!?
>I expected 37. dxe5, which was Glaurung's preferred move until it
>changed its mind at the last moment.  At this stage of the game I was
>rather pessimistic.  It looks like black will soon be able to complete
>an artificial kingside castling, and white's king will be in great
>danger.  Glaurung, however, was happier than ever before.  The score
>after Kf1 was +0.89.  I didn't understand the move Kf1 at all, and I
>still don't.  In just a few moves white develops a deadly attack, but
>I have no idea whether this is because Kf1 is a strong move or because
>black makes some mistake at this stage.

Here is fruit's opinion:

before Kf1
It does not find that move even after long time so it seems that white is better
with 37.dxe5

It seems that Kf1 also gives advantage for white based on fruit analysis

New game,
[D]2n4r/p1pr1kpp/3bp1q1/PP2p3/1PRP3R/1Q3N2/5P2/B3K3 w - - 0 1

Analysis by Fruit 2.1:

1.dxe5
  ²  (0.36)   Depth: 1/1   00:00:00
1.dxe5 Be7 2.Rcg4 Rd3
  ²  (0.56)   Depth: 5/15   00:00:00
1.dxe5 Be7 2.Rcg4 Rd3
  ²  (0.56)   Depth: 5/15   00:00:00
1.dxe5 Be7 2.Rcg4 Rd3
  ²  (0.56)   Depth: 5/15   00:00:00
1.dxe5 Be7 2.Rhd4 Rhd8 3.Rc6
  ²  (0.58)   Depth: 5/19   00:00:00
1.dxe5 Be7 2.Rhf4+ Ke8 3.Kf1 Rf8 4.Rfd4
  ²  (0.64)   Depth: 6/20   00:00:00  62kN
1.dxe5 Be7 2.Rhf4+ Ke8 3.Rc6 Qg2 4.Bd4 g5
  ±  (0.78)   Depth: 7/23   00:00:00  154kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rc6 Rf8 4.Bd4 Kg8 5.Rxe6
  ±  (0.80)   Depth: 8/23   00:00:00  335kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rcd4 Rxd4 4.Bxd4 Qc1+ 5.Ke2 Rd8 6.Rg1
  ±  (0.79)   Depth: 9/29   00:00:01  792kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Bc3 Rhd8 4.Bd2 Qh5 5.Rcf4+ Kg8 6.Qxe6+ Kh8
  ±  (0.78)   Depth: 10/34   00:00:02  2135kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Bc3 Rhd8 4.Bd2 Qh1+ 5.Rg1 Qh5 6.Rc6 Kg8 7.Qxe6+ Kh8
  ±  (1.04)   Depth: 11/37   00:00:05  4546kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Bc3 Rhd8 4.Bd2 Rxd2 5.Rcf4+ Kg8 6.Nxd2 Bg5 7.Rxg5 Qxg5
8.Qxe6+ Kh8
  ±  (0.92)   Depth: 12/39   00:00:10  8530kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rc6 Rhd8 4.Bd4 Rd5 5.Rxc7 Kg8 6.Qd3 Qh3 7.Rg1 Bxb4+
8.Ke2
  ±  (0.88)   Depth: 13/44   00:00:24  20380kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rgf4+ Ke8 4.Rfd4 Rf8 5.Rxd7 Kxd7 6.Qd3+ Ke8 7.Rxc7 Kf7
8.b6 Qh1+ 9.Ke2 Qxa1 10.bxa7
  ±  (1.16)   Depth: 14/44   00:01:21  67484kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rgf4+ Ke8 4.Rfd4 Rf8 5.Rxd7 Kxd7 6.Qd3+ Ke8 7.Rxc7 Kf7
8.Ke2 Qh1 9.Bd4 Kg8 10.Bxa7 Bxb4
  +-  (1.55)   Depth: 15/49   00:02:20  119346kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rgf4+ Ke8 4.Rfd4 Rf8 5.Rxd7 Kxd7 6.Qd3+ Ke8 7.Rxc7 Kf7
8.Ke2 Qh1 9.b6 axb6 10.Bd4 bxa5 11.bxa5
  +-  (1.60)   Depth: 16/49   00:03:49  199019kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rgf4+ Ke8 4.Rfd4 Rxd4 5.Bxd4 Bd8 6.Rc6 Kd7 7.Be3 Qh3
8.Qd3+ Ke8 9.Nd4 Be7 10.Rxe6 Rf8
  +-  (1.72)   Depth: 17/55   00:07:11  372674kN
1.dxe5 Be7 2.Rhg4 Qh6 3.Rgf4+ Ke8 4.Rfd4 Rxd4 5.Bxd4 Bd8 6.Rc6 Kf7 7.Be3 Qh1+
8.Ke2 Re8 9.Bg5 Bxg5 10.Nxg5+ Kg8 11.Rxc7 Qh5+ 12.Nf3
  +-  (1.68)   Depth: 18/60   00:15:33  807184kN

(,  14.08.2005)


After Kf1 fruit needs a long time to find List's move and also gives it a score
of 1.4 for white.

New game,
2n4r/p1pr1kpp/3bp1q1/PP2p3/1PRP3R/1Q3N2/5P2/B4K2 b - - 0 1

Analysis by Fruit 2.1:

1...exd4 2.Bxd4
  =  (-0.03)   Depth: 1/2   00:00:00
1...e4 2.Ne5+ Bxe5 3.dxe5
  ³  (-0.32)   Depth: 1/4   00:00:00
1...e4 2.Ne5+ Bxe5 3.dxe5
  ³  (-0.32)   Depth: 2/20   00:00:00
1...e4 2.Ne5+ Bxe5 3.dxe5 Ne7 4.Rcxe4
  =  (0.09)   Depth: 3/20   00:00:00
1...exd4 2.Bxd4 Qf5 3.Rc2 Qxb5+ 4.Re2 Bxb4 5.Qxe6+ Kf8
  =  (0.02)   Depth: 3/20   00:00:00
1...exd4 2.Bxd4 Qf5 3.Rc2 Qxb5+ 4.Re2 Bxb4 5.Qxe6+ Kf8
  =  (0.02)   Depth: 4/20   00:00:00
1...exd4 2.Bxd4 Ke8 3.Be5 Rf8 4.Rhg4
  =  (0.10)   Depth: 5/21   00:00:00
1...exd4 2.Rcxd4 Qf5 3.Rdg4 Qxb5+ 4.Kg1 Ke8 5.Qxe6+ Kf8
  ±  (0.76)   Depth: 6/23   00:00:00  144kN
1...e4 2.d5 exd5 3.Rcxe4 Ne7 4.Rhg4
  ²  (0.29)   Depth: 6/26   00:00:00  199kN
1...Rhd8 2.d5 exd5 3.Rcg4 Qf5 4.Qxd5+ Kf8 5.Nxe5 Bxe5 6.Qxe5 Qxe5 7.Bxe5
  ²  (0.27)   Depth: 6/26   00:00:00  268kN
1...Rhd8 2.d5 exd5 3.Rcg4 Qf5 4.Rg5 Qe6 5.Bxe5
  ²  (0.36)   Depth: 7/26   00:00:00  394kN
1...Rhd8 2.d5 exd5 3.Rcg4 Qf5 4.Rg5 Qe6 5.Bxe5
  ²  (0.36)   Depth: 8/26   00:00:01  665kN
1...Rhd8 2.d5 Kg8 3.Rcg4 Qf6 4.dxe6 Re7 5.Qd3 g6
  ±  (0.92)   Depth: 9/26   00:00:02  1193kN
1...Rhd8 2.d5 Kg8 3.Rcg4 Qf6 4.dxe6 Re7 5.Qd3 g6 6.Ng5
  ±  (1.12)   Depth: 10/30   00:00:03  2866kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rfd8 4.Rc6 Qh6 5.Bb2 Kg8 6.Qxe6+ Qxe6 7.Rxe6 Rxd4
8.Bxd4 Bxb4
  ±  (0.83)   Depth: 10/32   00:00:05  4274kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rfd8 4.Rc6 Qh6 5.Bb2 Kg8 6.Qxe6+ Qxe6 7.Rxe6 Rxd4
8.Bxd4 Bxb4
  ±  (0.83)   Depth: 11/32   00:00:07  6237kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rfd8 4.Rc6 Rxd4 5.Nxd4 Qh5 6.Qxe6+ Kf8 7.Kg2 Qg5+
8.Kh2 Qh5+ 9.Kg3
  ±  (0.99)   Depth: 12/35   00:00:13  11127kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rfd8 4.Rc6 Rxd4 5.Nxd4 Qh5 6.Qxe6+ Kf8 7.Qb3 Qh1+
8.Ke2 Qxa1 9.Ne6+ Ke8 10.Nxg7+ Kf8 11.Ne6+ Ke8 12.Nxc7+ Kf8
  ±  (1.01)   Depth: 13/40   00:00:27  22663kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rfd8 4.Rc6 Rxd4 5.Nxd4 Qh5 6.Qxe6+ Kf8 7.Qb3 Qh1+
8.Ke2 Qxa1 9.Ne6+ Ke8 10.Nxg7+ Kf8 11.Ne6+ Ke8 12.Nxc7+ Kf8
  ±  (1.01)   Depth: 14/40   00:01:02  52486kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rfd8 4.Rc6 h6 5.Rxd7 Rxd7 6.Nd4 Qh5 7.Qxe6+ Ke8 8.Kg2
Qg5+ 9.Kf3 Qh5+ 10.Ke3 Qh2 11.Qg8+ Bf8
  ±  (1.38)   Depth: 15/43   00:02:05  107530kN
1...Rf8 2.dxe5 Be7 3.Rhd4 Rxd4 4.Nxd4 Qh5 5.Rxc7 Qxe5 6.Qc3 Qd5 7.Nf3 Rg8 8.Ne5+
Kf6 9.Kg1 Qd1+ 10.Kg2 g5 11.Nc6+ Kf7 12.Nxe7 Nxe7 13.Rxa7
  +-  (1.48)   Depth: 16/53   00:05:27  281782kN
1...Rhd8 2.d5 Kg8 3.Rcg4 Qf5 4.Rg5 Qf6 5.dxe6 Re7 6.Rhg4 Rf8 7.Rxg7+ Kh8 8.Rxe7
Nxe7 9.Kg2 Qf5 10.Rg5
  ±  (1.40)   Depth: 16/54   00:07:01  361978kN

(,  14.08.2005)



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