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Subject: Yudasin vs Junior 5.0 [Conclusion]

Author: Shay Bushinsky

Date: 15:35:13 08/29/98


Yudasin vs Junior 5.0
=================

We have completed three interesting and exciting days of a match against
international grandmaster Leonid Yudasin. The event took place in the luxurious
Hyatt Regency hotel, Ein Bokek, the dead sea, Israel.

The conclusion of the match was as follows:

1. Standard time control part (120/40 and 60/rest) 1.5 - 0.5 in favor of Yudasin
2. Rapid time control part (30/all) 2 - 2 draw
3. Unofficial blitz match (5/all) 4.5-1.5 in favor of Junior 5.0

We have only but appreciation to grandmaster Yudasin for taking the
challenge and playing great chess against Junior. Yudasin,  is not
only an all round first class positional expert and tactician, but is
a very spiritual person as well. He had taken the challenge beyond
just another chess match to really try and investigate the differences
between the human thought process in chess and the way computers
play the game.

Along the match, Yudasin seemed to have changed his mind in his
effort to classify Junior as a chess playing entity.
Indeed he reckoned that Junior 5.0 is of  above 2500 playing strength.
Though after the standard time control part, Yudasin felt that Junior
is an improved tactical "brother" of his predecessor. It was after game 3
of the rapid match, Yudasin had recognized Junior's positional strengths
as well.

In his summation of the match, Yudasin felt that the result was justified.
He believed that he is still slightly superior in the slower time controls.
Yudasin tried to explain the difference in what he termed human's "second order
of chess understanding" - the ability to appreciate when positional features
are good and when the same features are bad - giving the example of Junior's
central pawns in game 1 which were a disadvantage due to their relative
weaknesses.
Yudasin also thought that if computers would be given  a "relative sense" e.g.
would be
able to adopt their game to the opponent's or to "bluff" sometimes, they would
become
extremely strong.

All of the games were transmitted live over the ICC. The winning internet
comment was from one of the observers who disagreed with us when we claimed
that the dead sea is the lowest point on earth. He insisted that it is rather
Washington D.C!

From our point of view, as programmers, we felt that the match was very
valuable. It exposed some obvious problems such as: Qb8, Bh8 and
Bb7 in STC game 2 etc. but we felt that still the games were of high quality.
Personally I liked game 3 of the rapid part where Yudasin tried a "sit and
wait policy" and was positionally punished by Junior. I also
can't stop admiring how Yudasin handled rapid game 4 where I'm
sure that not many humans would of escaped Junior alive.

A technical detail:
Junior 5.0, soon to be released by Chessbase gmbh, ran on a Pentium
333Mhz utilizing 80MB of RAM.  Thanks to everybody who helped us
have this event. Special thanks to:

Matthias Wuellenweber of Chessbase, Rinat Zukerman of Hyatt,
Guy Zadik of Packared Bell and Andy McFarland of ICC

and of course to grandmaster Leonid Yudasin and to Amir Ban my partner.

We hope you enjoyed the event. For your convenience the match
games are enclosed. The next event on Junior's agenda will take
place Tuesday, September 8th. IGM Dov Zifroni will play a two game
match against Junior.

Meanwhile, best regards,

-- Shay Bushinsky


STC part


[Event "ICC u 120 0 08/26/1998"]
[Site "Internet Chess Club"]
[Date "1998.08.26"]
[Round "1.1"]
[White "*Junior50"]
[Black "*GMYudasin"]
[Result "1/2-1/2"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "A47"]
[NIC "QP.06"]
[LongECO "Queen's Indian defense"]

 1. d4 Nf6       2. Nf3 b6       3. e3 Bb7       4. c4 e6        5. Bd3 d5
 6. b3 Bb4+      7. Bd2 dxc4     8. bxc4 Bxd2+   9. Nbxd2 c5    10. Nb3 cxd4
11. exd4 O-O    12. O-O Nc6     13. Re1 a5      14. a4 Nb4      15. Ne5 Nxd3
16. Qxd3 Nd7    17. Nd2 Nxe5    18. Rxe5 Qc7    19. Rh5 g6      20. Rh4 Rfd8
21. Rb1 Bc6     22. Ne4 Bxe4    23. Rxe4 Qc6    24. Qc2 Rac8    25. Rc1 f5
26. Rh4 g5      27. Rh5 Rxd4    28. Rxg5+ Kf8   29. Re1 Rxc4    30. Qb2 Rc3
31. g4 Qxa4     32. Qxb6 Qf4    33. h4 Rg3+     34. fxg3 Qxg3+  35. Kf1 Qh3+
36. Kg1 Qg3+
{Game drawn by mutual agreement} 1/2-1/2

[Event "ICC 120 0 08/27/1998"]
[Site "Internet Chess Club"]
[Date "1998.08.27"]
[Round "1.2"]
[White "*Yudasin"]
[Black "*Junior"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "B30"]
[NIC "SI.31"]
[LongECO "Sicilian: Nimzovich-Rossolimo attack (without ...d6)"]

 1. e4 c5       2. Nf3 Nc6     3. Bb5 e6      4. O-O Nge7    5. Re1 a6
 6. Bxc6 Nxc6   7. Nc3 Qc7     8. d4 cxd4     9. Nxd4 Bd6   10. Nxc6 bxc6
11. Qh5 Be5    12. Re3 Rb8    13. b3 g6      14. Qh4 d6     15. Rf3 Qa5
16. Bd2 Qa3    17. Rb1 h6     18. Rd3 a5     19. Qg4 h5     20. Qg5 h4
21. h3 Ba6     22. Rf3 Rh5    23. Qe3 Rb7    24. Qe1 d5     25. Bf4 Bh8
26. e5 Qb4     27. Na4 Bb5    28. c3 Qe7     29. Nb2 c5     30. c4 Bc6
31. Re3 d4     32. Re2 Ra7    33. Nd3 Ra8    34. f3 Bg7     35. a3 Bf8
36. Kh1 Qb7    37. Kh2 Qa6    38. Rc2 Qc8    39. Kh1 Qc7    40. Qf2 Rb8
41. Rcb2 Bb7   42. b4 cxb4    43. axb4 Qxc4  44. bxa5 Qxd3  45. Rxb7 Rxb7
46. Rxb7 Be7   47. Rb8+ Bd8   48. Qb2 Qf1+   49. Kh2 Qa6    50. Bd2
{Black resigns} 1-0

Rapid part

[Event "ICC u 30 0 08/28/1998"]
[Site "Internet Chess Club"]
[Date "1998.08.28"]
[Round "2.1 "]
[White "*Junior50"]
[Black "*Yudasin"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "B42"]
[NIC "SI.42"]
[LongECO "Sicilian: Kan, Polugaievsky variation"]

 1. e4 c5       2. Nf3 e6      3. d4 cxd4     4. Nxd4 a6     5. Bd3 Bc5
 6. Nb3 Be7     7. Qg4 Bf6     8. O-O d6      9. Nc3 Nc6    10. Qg3 Nge7
11. Be2 O-O    12. Bf4 Bxc3   13. Qxc3 e5    14. Bg5 h6     15. Bh4 Qc7
16. Rad1 Be6   17. Rfe1 Rac8  18. Qd2 Ng6    19. Bg3 Rfd8   20. c4 a5
21. Bf1 a4     22. Nc1 Qb6    23. Re3 Nd4    24. Rc3 Rd7    25. Ne2 Bg4
26. Kh1 Qb4    27. f3 Nxe2    28. Bxe2 Be6   29. Ra3 Qxd2   30. Rxd2 Bxc4
31. Rc3 Rdc7   32. Rdc2 b5    33. b3 axb3    34. axb3 Bxe2  35. Rxc7 Rxc7
36. Rxc7 Bd1   37. b4 f6      38. Rc6 Be2    39. Rxd6 Kf7   40. Rd7+ Ne7
41. Bf2
{Black resigns} 1-0


[Event "ICC u 30 0 08/28/1998"]
[Site "Internet Chess Club"]
[Date "1998.08.28"]
[Round "2.2"]
[White "*Yudasin"]
[Black "*Junior50"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "C55"]
[NIC "IG.01"]
[LongECO "Two knights defense (Modern bishop's opening)"]

 1. e4 e5       2. Nf3 Nc6     3. Bc4 Nf6     4. d3 Be7      5. O-O O-O
 6. Re1 d6      7. Bb3 a5      8. c3 Bg4      9. Nbd2 Qb8   10. a4 Qa7
11. h3 Bc8     12. Nf1 b6     13. Ng3 Kh8    14. d4 Qb7     15. Bg5 exd4
16. cxd4 h6    17. Bxf6 Bxf6  18. Bd5 Bd7    19. Rc1 b5     20. Qc2 Ra6
21. axb5 Qxb5  22. Bc4 Qb7    23. Bxa6 Qxa6  24. e5 Bd8     25. Qe2 Qxe2
26. Rxe2 d5    27. Rec2 Nb4   28. Rd2 c6     29. Ne2 Bf5    30. Ne1 Bg5
31. f4 Bd8     32. g4 Bh7     33. Kh2 Re8    34. Kg3 Bc7    35. h4 Kg8
36. h5 Kf8     37. Nc3 Rb8    38. Na4 Ke7    39. Nc5 Na2    40. Ra1 Nb4
41. f5 Rb5     42. Kf4 Bb6    43. Na4 Bd8    44. Nf3 Bg8    45. Rg1 Kf8
46. g5 hxg5+   47. Nxg5 Be7   48. Nf3 Bh7    49. Ng5 Bg8    50. Rg3 Na6
51. Nf3 Rb3    52. Rdg2 Nb4   53. Ne1 Rxg3   54. Rxg3 Bh4   55. Nc5 Bxg3+
56. Kxg3 Na2   57. Ned3 Bh7   58. Kf4 Ke7    59. Nb7 Nb4    60. Nxb4 axb4
61. Nc5 Bg8    62. Na6 b3     63. Nc5 Bh7    64. Nxb3 f6    65. e6 Bg8
66. Nc5 Bh7    67. Nd3 Kd6    68. Nf2 Bg8    69. Ng4 Ke7    70. Ne3 Ke8
{Black resigns} 1-0



[Event "ICC u 30 0 08/28/1998"]
[Site "Internet Chess Club"]
[Date "1998.08.28"]
[Round "2.3"]
[White "*Junior50"]
[Black "*Yudasin"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "A00"]
[NIC "VO.10"]
[LongECO "Polish (Sokolsky) opening"]

 1. b4 Nf6      2. Bb2 e6      3. Bc3 Nd5     4. b5 Nxc3     5. Nxc3 a6
 6. a4 Be7      7. e4 O-O      8. Bd3 d5      9. Nf3 c5     10. bxc6 Nxc6
11. exd5 exd5  12. O-O Bf6    13. Qb1 Rb8    14. Re1 Be6    15. h3 g6
16. Qb2 Qc7    17. Qa3 Na5    18. Qb4 Nc6    19. Qa3 Rfd8   20. Rab1 Qd6
21. Qxd6 Rxd6  22. Ne2 Bd7    23. c3 Nd8     24. Bc2 Ne6    25. d4 Nd8
26. Bb3 Rc8    27. Ne5 Be6    28. Ba2 Rc7    29. Rb2 Kg7    30. Nd3 b6
31. Nb4 a5     32. Nd3 h5     33. Ne5 h4     34. Rb5 Be7    35. Reb1 f6
36. Ng4 Bf5    37. R1b2 Bd3   38. Rxd5 Rxd5  39. Bxd5 Ba3   40. Rb3 Bxe2
41. Rxa3 Nf7   42. Ne3 f5     43. Rb3 f4     44. Ng4 Bxg4   45. hxg4 Ng5
46. Kf1 Rd7    47. Bc6 Rd6    48. Rxb6 Kh6   49. Ra6 Ne4    50. d5 Nxc3
51. Rxa5 Ne4   52. f3 Nd2+    53. Kf2 Nb3    54. Rb5 Nd4    55. Rb6 Rf6
56. a5 Rf7     57. Be8 Re7    58. Bxg6 Re2+  59. Kf1 Ra2
{Black resigns} 1-0


[Event "ICC u 30 0 08/28/1998"]
[Site "Internet Chess Club"]
[Date "1998.08.28"]
[Round "2.4"]
[White "*Yudasin"]
[Black "*Junior50"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "B01"]
[NIC "SD.01"]
[LongECO "Scandinavian (center counter) defense"]

 1. e4 d5        2. exd5 Qxd5    3. Nc3 Qa5      4. d4 Nf6       5. Bc4 Bf5
 6. Nf3 e6       7. O-O c6       8. Bd2 Qb6      9. a4 Bd6      10. a5 Qc7
11. Re1 O-O     12. h3 Rd8      13. Nh4 Bh2+    14. Kh1 Rxd4    15. Nxf5 exf5
16. Qe2 Nbd7    17. Be3 Rh4     18. Bg5 Rd4     19. a6 Be5      20. axb7 Qxb7
21. Bb3 h6      22. Be3 Rb4     23. Qf3 c5      24. Nd5 Rxb3    25. Nxf6+ Bxf6
26. cxb3 Qxf3   27. gxf3 Ne5    28. f4 Nd3      29. Re2 Rb8     30. Rd2 Rxb3
31. Ra3 Rxa3    32. bxa3 c4     33. Bxa7 Nxf4   34. Rd7 Nxh3    35. Rc7 c3
36. a4 Nf4      37. a5 Kh7      38. Rc4 Nd5     39. a6 f4       40. Bd4 Bxd4
41. Rxd4 Nb6    42. Rd6 Na8     43. Rc6
{Black resigns} 1-0





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