Computer Chess Club Archives




Subject: Neurosis's Dutch open, and new release.

Author: Stan Arts

Date: 07:15:10 10/25/04

First I would like to announce I've released a new version.

Version 1.81 .  (I will stay in the 1.8 range for now, because I'm thinking of
a big rewrite, and that would become 2.0) It's the version I used the second
weekend at Leiden.
Compared to 1.8 it's searching some 50% faster and has a better branching-
factor, and more knowledge. (most important change is that it knows more about
subtle starting attacks, so it can hopefully spot them earlyer, and create more
chances for itself, and that it has better understanding of passed pawns.)

Even though it's searching faster, it's nps have dropped a bit. I've changed
how some of it's important extentions work, and they are now more selective but
also slower. Also, instead of counting all the actual pseudolegal positions
created in the searchtree, now I count only fully legal chesspositions for

I've put my big, wide and unpredictable openingbook in the package again, for
interesting and entertaining chess, but if you would like to play with Neurosis
in a serious tournament, please tell me so I can send my new self-hand-written
opening book. It will hopefully leave Neurosis in more solid positions. Maybe I
will put it online soon too.

There is also a new 3D version, it has the same improvements as the winboard
version, but I did not work more on my GUI itself this time.

Available from my page.:

And hopefully also soon from Leo Dijksman's WBEC website.: (thanks Leo!)

Hope you will enjoy.

A description of my Dutch open in Leiden.

I enjoy reading tournamentreports from others, so this time I thought I would
write my own, for those that are interested in amateur computerchess.

Hmm, when the preliminairy participants list was up on
over a month ago, I wasn't so sure I was going to go. Because half the field
were professional competitors, and otherwise only top-amateurs. So that wasn't
encouraging. But well, I had made a lot of changes to my program, so I was
curious how it was going to do, and otherwise would still be a good learning-

I had competed at Leiden for the first time last April, so this time I already
knew most faces and had met many of the others already, and that made this
tournament more fun. There's a nice atmosphere, with only friendly people, and
everyone's very enthousiastic about computerchess and chess ofcourse.

I'm not unhappy about the results of the tournament, it has managed to score
a few points, and could show some nice chess in some games. The main problem
was that it was outsearched 1-2-3 ply by everyone. Because of having the
slowest hardware, and a slow program, not nescesarily in that order. That means
the opponents usually see everything Neurosis does, and a move earlyer. So in
tactical positions there's no chance, only in non-tactical positions where it
can shuffle around.

Saturdaymorning weekend 1, game 1, against Isichess.

[Event "24th DOCC"]
[Date "2004.10.16"]
[Round "01"]
[White "Neurosis"]
[Black "IsiChess MMX"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. Bg5 Nc6 6. dxc5 h6 7. Bd2 Bxc5
8. e3 d5 9. O-O-O dxc4 10. Qxc4 Qe7 11. Nf3 O-O 12. Ne4 Bb6 13. Nxf6+ Qxf6
14. Bd3 e5 15. Qe4 g6 16. Bc4 Bf5 17. Qh4 Qg7 18. Bd5 Rac8 19. e4 g5
20. Qg3 Ne7+ 21. Kb1 Bh7 22. Bxb7 Rc7 23. Ba6 Bxe4+ 24. Ka1 Bxf3 25. gxf3
Bd4 26. Rc1 Rb8 27. Bc3 Nf5 28. Qg4 e4 29. Bxd4 Qxd4 30. Rb1 Rc2 0-1

I wasn't unhappy about Neurosis's opening, although it was going to like a
long castle, and that's very risky against opponents like this. (This
tournament, I had written by hand a small shallow openingbook, (In panic,
because I had waited till the last day before the first weekend on friday to
start with that) that would hopefully always leave Neurosis in solid
With some interesting early-middlegame shuffling, where white had some play
and could cause some weaknesses at black's kingside, with black's dangerous
bishop on f5 and after 18 ..Rac8 the chances started to turn to black,
although not too serious yet. But after my program chose to recapture with 25.
gxf3, (maybe to keep pressure on e5 and have an open rookline to the black
king) it was over, and black had an unstoppable attack. The endposition
Neurosis saw mate in 7, and time for me to resign.

game 2, Pro deo.

[Event "24th DOCC"]
[Date "2004.10.16"]
[Round "02"]
[White "Pro Deo"]
[Black "Neurosis"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8.
h3 Bb7 9. d3 d6 10. a3 Nb8 11. Nbd2 c5 12. Nf1 c4 13. dxc4 Nxe4 14. cxb5
Qb6 15. bxa6 Nxf2 16. Be3 Nxd1 17. Bxb6 Rxa6 18. Bd4 Bxf3 19. gxf3 exd4
20. Rxe7 Nxb2 21. Rb1 Na4 22. Bxf7+ Kh8 23. Re8 Rxe8 24. Bxe8 Rb6 25. Rxb6
Nxb6 26. Nd2 Na6 27. Nb3 Nc7 28. Bc6 Ne6 29. a4 Nc5 30. a5 Nc8 31. Nxd4 Na7
32. Bd5 Na6 33. c4 Nc7 34. Bb7 Kg8 35. Nc6 Nxc6 36. Bxc6 Kf7 37. Bb7 Ke7
38. Kf2 d5 39. cxd5 Kd6 40. Ke3 Nxd5+ 41. Bxd5 Kxd5 42. Kf4 Kc6 43. Ke5 1-0

My program started to calculate at 7 ..O-O. An interesting opening followed.
(Pro deo was out of book after 12 ..c4) One of the longest capturesequences
of the tournament (probably) followed. Me and Pro deo's operator couldn't
believe white was going to allow black to capture on f2, (The programs take
some 3 or more minutes per move at the start of the games so there's lots of
time for the operators to ponder.) but it was hard for the human eye to see
the whole combination. When it was all over, most of the material had gone
off the board, but black (with more luck then wisdom from white here? Hmm Pro
deo often has that luck.) was left with having to stop a white's passed pawn,
and black didn't do that too well. :( But I was not so unhappy with the game

game 3, Xinix.

[Event "24th DOCC"]
[Date "2004.10.16"]
[Round "03"]
[White "Neurosis"]
[Black "XiniX dubbel"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. e3 O-O 6. Be2 c5 7. dxc5 Qa5 8.
cxd5 Nxd5 9. Qxd5 Bxc3+ 10. Kf1 Bb4 11. a3 Bxc5 12. Bd2 Qb6 13. Rc1 Bd6 14.
Ne5 e6 15. Qd4 Qxd4 16. exd4 f6 17. Nc4 Bc7 18. Bb4 Bf4 19. Rc3 Rd8 20. Be7
Rxd4 21. Bxf6 Rd5 22. Ne3 Bxe3 23. Rxc8+ Kf7 24. Bc3 Rc5 25. Rxb8 Rxb8 26.
fxe3 Rbc8 27. Kf2 e5 28. Rd1 Kf6 29. e4 R8c7 30. Ke3 Ke6 31. Bb4 Rc2 32.
Rd6+ Kf7 33. Bc3 R7xc3+ 34. bxc3 Rxc3+ 35. Kd2 Rxa3 36. Rd7+ Kf6 37. Rxb7
h5 38. Bc4 h4 39. Rf7+ Kg5 40. Re7 Kf4 41. Bd5 Ra6 42. Ke2 Rb6 43. Rf7+ Kg4
44. Ke3 Rb2 45. Rg7 Kg5 46. Kf3 Rc2 47. Re7 Rc3+ 48. Ke2 Rc2+ 49. Ke3 Rxg2
50. Rxe5+ Kh6 51. Kf3 Rxh2 52. Kg4 a5 53. Re6 Rh1 54. Ra6 Ra1 55. Kxh4 a4
56. Bf7 Kg7 57. Be6 Kf6 58. Bf5+ Ke5 59. Bxg6 Kf4 60. Rf6+ Ke5 61. Ra6 Kf4
62. Rf6+ Ke5 63. Rf5+ Kd4 64. Ra5 a3 65. Kh3 Kc4 66. Bf7+ Kb4 67. Ra7 Re1
68. Bd5 Rg1 69. Kh4 Re1 70. Kg3 Rf1 71. Be6 Ra1 72. Kf4 Rd1 73. Bf7 Rf1+ 74.
Ke5 Kc5 75. Bh5 Ra1 76. Bg4 Kb6 77. Ra4 Kc5 78. Be6 Kc6 79. Kd4 Kb5 80. Bd7+
Kb6 81. Kc3 Kc7 82. Bf5 Kd6 83. Ra5 Rf1 84. Rxa3 Ke5 85. Kd2 Kf4 86. Ra7
Rf2+ 87. Kd3 Rf1 88. Re7 Rd1+ 89. Ke2 Rc1 90. Kd3 Ra1 91. Bg6 Ra3+ 92. Kd4
Ra4+ 93. Kd5 Ra5+ 94. Kd4 Ra4+ 95. Kd5 Ra5+ 96. Kc4 Kg5 97. Bf7 Kf6 98. Rb7
Ke5 99. Kd3 Kf4 100. Kd4 Ra1 101. Bb3 Ra5 102. Rf7+ Kg5 103. Rg7+ Kh6 104.
Rb7 1-0

Xinix had been rewritten to a new programminglanguage for this tournament,
but was still having some problems. Never the less it was going to be a
very long and tiring (for the operators) fight. Neurosis had a won position
but could only slowly make progress in the endgame. Unfortunatly near the
end with my opponent just two minutes left on the clock desided Neurosis
wasn't playing on position (with as argument long time no pawnmoves, but
white can not just whack the e pawn forward here.) but on clock
(?! Computers/Neurosis can't do that.) and he called for the referee. Luckily I
had e5 in my PV for next move (when Neurosis had manouvred itself so that
finally became possible) and this argument had become invalid. So that was
an unfortunate end.

Day 2, game 4, Ant.

[Event "24th DOCC"]
[Date "2004.10.17"]
[Round "04"]
[White "Ant"]
[Black "Neurosis"]
[Result "1-0"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Bb4 5. e3 Ne7 6. Nf3 O-O 7. Bd3 Bf5
8. O-O Nbc6 9. Bxf5 Nxf5 10. Qd3 Nce7 11. Nxd5 Qxd5 12. e4 Qd7 13. exf5
Qxf5 14. Qb3 a5 15. a3 Bd6 16. Re1 Qd5 17. Qd3 Rfe8 18. Bd2 Nf5 19. Bc3
Rad8 20. Re2 Rxe2 21. Qxe2 b6 22. Re1 f6 23. Kh1 c6 24. Kg1 Qf7 25. Qd3 Ne7
26. Bd2 Nd5 27. Rc1 Qd7 28. Qc4 Rc8 29. a4 Kh8 30. g3 Be7 31. Re1 Re8 32.
Qe2 Nc7 33. Rc1 Qd5 34. Kg2 c5 35. Qc4 Qa8 36. Re1 Qc6 37. b3 Qa8 38. Rd1
Rd8 39. Qf7 Nd5 40. dxc5 Bxc5 41. Re1 Ne7 42. Be3 Bb4 43. Rc1 Nd5 44. Bd4
Re8 45. Qd7 Rd8 46. Qc6 Qb8 47. Qe6 b5 48. Ba7 Qb7 49. axb5 Qxb5 50. Rc8
Rf8 51. Rxf8+ Bxf8 52. Qf7 Qb4 53. Qxd5 a4 54. bxa4 Qxa4 55. Qf7 Bd6 56.
Nd4 h6 57. Ne6 Qe4+ 58. f3 Qh7 59. f4 Qg8 60. Qd7 Bb4 61. f5 Ba3 62. Kf3
Qa8+ 63. Ke3 Qg8 64. Kd4 h5 65. Kc3 Bc1 66. Bc5 Bh6 67. Bf8 1-0

Neurosis was out of book after 3. cxd5. Then, one of the nicest games (I
think. For me anyway.) of the tournament followed. Black probably shouldn't
play 34 ..c5. White was having more play with his queen on f7 with 39. Qf7,
but this was still ok for black. But it went wrong with 47 ..b5 and black
could not recapture the pawn with 49 ..Qxb5. Ant was searching 12-14 ply
and already saw that, but Neurosis came 1 ply short of seeing that before
capturing. White then fnished it off in a pretty way with black in
zugzwang at the end. A good position for me to resign.

game 5, Kallisto.

[Event "24th DOCC"]
[Date "2004.10.17"]
[Round "05"]
[White "Kallisto II"]
[Black "Neurosis"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 Nb6 8.
c5 Nbd7 9. Bd3 h6 10. Bf4 Nh5 11. Be5 Kh8 12. Nb5 Nxe5 13. dxe5 c6 14. Nd6
f5 15. exf6 Nxf6 16. Ne5 Kg8 17. Ng6 Bxd6 18. cxd6 Qa5+ 19. Qd2 Qxd2+ 20.
Kxd2 Rd8 21. Ne5 Rxd6 22. Bg6 b6 23. Rhd1 Bb7 24. Nf7 Rd7 25. Ne5 Rc7 26.
f4 c5 27. g3 a5 28. Rac1 a4 29. a3 Ne8 30. Bxe8 Rxe8 31. Kc3 g5 32. Rg1 Kg7
33. h4 Kf6 34. Ng4+ Kg7 35. Ne5 Kf6 36. Ng4+ Kg7 1/2-1/2

And here I found a bug. (Bugs only come out at important tournaments at
important moments, never at testing.) Neurosis at the end did not think it
was a 3x rep because after 33. h4 Neurosis had stored a possible ep-field
at h3 in his position-code. This is a bug from the very beginning, and has
never come out before, at the time when coding it I had never realised I
shouldn't do that when there's not an actual pawn there to capture en
passant. What are the odds of that comming forward in such a tournament
huh. And so it ended in a draw without black realising it, and wanted to
play something else (black's a pawn up) next time white would rep with the
knight. But I was not unhappy about the result ofcourse, black could not of
done anything with his extra pawn anyway, actually white had some threats
here too.

game 6, Nexus.

[Event "24th DOCC"]
[Date "2004.10.17"]
[Round "06"]
[White "Neurosis"]
[Black "Nexus"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. Bg5 Nc6 6. dxc5 h6 7. Bd2 O-O 8.
O-O-O Bxc5 9. e3 b6 10. Nf3 Bb7 11. Bd3 Rc8 12. Na4 Be7 13. Rhf1 Qc7 14. h4
d5 15. Kb1 Na5 16. Bxa5 dxc4 17. Qb5 cxd3 18. Bc3 Rfd8 19. Rc1 Bc6 20. Qa6
Ne4 21. Rfd1 Qd7 22. Ne5 Bb5 23. Nxd7 Bxa6 24. Ne5 Nxf2 25. Be1 Nxd1 26.
Rxd1 d2 27. Rxd2 Rxd2 28. Bxd2 Bf6 0-1

That was the worst game of my program of the tournament. :( I think I was
outsearched by Nexus by atleast 4 ply everywhere.  12. Na4 is horrible.

Saturday weekend 2. game 7, Goldbar.

[Event "24th DOCC"]
[Site "Leiden NED"]
[Date "2004.10.23"]
[Round "07"]
[White "GoldBar"]
[Black "Neurosis"]
[Result "1/2-1/2"]
[ECO "C92/26"]
[Opening "Ruy Lopez"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Nf6 6. O-O Be7 7. Re1 O-O 8.
c3 d6 9. h3 Bb7 10. d4 Re8 11. Nbd2 exd4 12. cxd4 Rc8 13. Ng5 Rf8 14. e5
dxe5 15. dxe5 Nd5 16. Nde4 Nxe5 17. Nxh7 Kxh7 18. Qh5+ Kg8 19. Qxe5 Qd7 20.
Qg3 Qf5 21. Bh6 Qg6 22. Qxg6 fxg6 23. Bd2 Rf5 24. Re2 Kf8 25. Rae1 Nf4 26.
Bxf4 Rxf4 27. Bc2 g5 28. g3 Bxe4 29. gxf4 Bxc2 30. Rxc2 gxf4 31. Re6 a5 32.
Re5 c5 33. Rf5+ Kg8 34. Rxf4 Rd8 35. Re4 Kf7 36. Re5 Bd6 37. Re3 a4 38. Kg2
Rb8 39. Rd2 Rb6 40. Rd5 Kf6 41. Rf3+ Kg6 42. Rfd3 Be7 43. Re3 Rb7 44. Rde5
Kf7 45. b3 a3 46. h4 b4 47. h5 Rc7 48. Rf3+ Bf6 49. Re4 Rc6 50. Rf5 Kg8 51.
Kg3 Kh7 52. Rd5 c4 53. Rxc4 Rxc4 54. bxc4 b3 55. axb3 a2 56. Ra5 a1=Q 57.
Rxa1 Bxa1 58. c5 Kg8 59. Kf4 Kf7 60. Ke4 Bc3 61. Kd5 Kf6 62. Kc4 Be1 63. f4
Bg3 64. b4 Bxf4 65. b5 Ke6 66. b6 Kd7 67. Kd5 Bh2 68. c6+ Kd8 69. Kc4 Bg1
70. Kb5 Kc8 71. Ka5 Kb8 72. Ka6 Bh2 73. Kb5 Bg1 74. Ka5 Bc5 75. b7 Kc7 76.
Ka6 Bd4 77. Ka5 Be5 78. Kb5 Bd6 79. h6 gxh6 80. Kc4 h5 81. Kd5 h4 82. b8=R
Kxb8 83. c7+ Kxc7 84. Ke4 1/2-1/2

This game shows the top-interesting chess is played by the amateurs.
Neurosis was out of book at move 7 again. Neurosis wasn't so happy in this
opening at all, and played a few bad ones, 8 ..d6 isn't so handy, but
11 ..exd4 is bad. At 14. e5 black was entirely tied down. Even enough for
my program to prefer to take away that e5 pawn and giving up a kingshield
pawn for it. White then having great attackingchances, but luckily black
could defend somehow, and white even agreed to exchange queens. Neurosis
knew a pawn was going to fall at move 28, and chose to sacrifice a quality
instead, for a drawish endgame. It was looking bad for black non the less,
but my only advantage was a pawn-majority on the queenside. After white 52.
Rd5 Neurosis suddenly noticed a pawnbreak, and that it could promote. Then,
it got exiting and me and Bart Goldhoorn got quite nervous. Was the bishop
going to be able to stop the connected passed pawns? It turned out black
could indeed get there fast enough with his king and defend. Goldbar uses
endgametablebases and explains the weird pawnsacrifice on h6 transposing to
a drawn outside passer and bad bishop.

game 8, The King.

[Event "24th DOCC"]
[Date "2004.10.23"]
[Round "08"]
[White "The King"]
[Black "Neurosis"]
[Result "1-0"]

1. Nf3 Nf6 2. c4 e6 3. d4 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 O-O 6. g3 d5 7. Bg2
dxc4 8. Na3 Qd5 9. O-O c5 10. Rfd1 Nc6 11. e3 Qh5 12. Nxc4 Rd8 13. Qc2 cxd4
14. Nxd4 Nxd4 15. Rxd4 Rf8 16. Nd6 e5 17. Rh4 Qg5 18. Rb4 a5 19. Rb5 Ng4
20. Rc1 Be6 21. h3 Nf6 22. Qc3 a4 23. Rxe5 Qh6 24. Nf5 Bxf5 25. Rxf5 Rab8
26. Rb5 Ne8 27. Qb4 Qe6 28. Qxa4 Nf6 29. a3 Qd6 30. Rxb7 Rxb7 31. Bxb7 1-0

That didn't go good. For some reason my program saw/thought capturing the
rook at move 15 wouldn't be a good idea, and probably because of white being
able to infiltrate on the 7th rank (with queen and knight) and then cause
some problems, so it played his rook back to f8. Then it was quickly over.
This time luckily Johan wasn't unfriendly and he is a fun person with lots
of great anecdotes about computerchess.

game 9, The Baron.

[Event "24th DOCC"]
[Date "2004.10.23"]
[Round "09"]
[White "Neurosis"]
[Black "The Baron"]
[Result "0-1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. e3 c6 5. Bd3 Nbd7 6. O-O Bd6 7. Nc3 O-O 8.
Bd2 dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. Qc2 b4 12. Ne2 c5 13. Ng5 Rc8 14. Bxh7+
Kh8 15. h3 cxd4 16. Qb1 dxe3 17. Bxe3 Bc5 18. Be4 Nxe4 19. Nxe4 Bxe3 20.
fxe3 Nb6 21. Rd1 Nd5 22. Qd3 f5 23. N4g3 Qg5 24. Qb5 Bc6 25. Qa6 Qxe3+ 26.
Kh2 f4 27. Nf1 Qf2 28. Nd4 Ne3 29. Nxe3 Qg3+ 30. Kh1 Qxh3+ 31. Kg1 Qxe3+
32. Kf1 f3 33. g4 Be4 34. Qb5 e5 35. a3 f2 0-1

A complicated game. 14. Bxh7+ looks more dangerous then it is. Black could
return the favour anyway, with Bxh2+, Kxh2, Ng4+ Kg1 and Qxg5. Or choose to
roll up a centre-pawn from white. Neurosis prefered to give his centre pawn
in return, but that didn't work out well. (I got a fail-low for move 15,
where he wasn't happy about Qd3 anymore, and finally (after about 10 minutes)
played h3.) Then after a couple more moves, it was becomming clear the e3
pawn was eventually going to fall, and worse, black could now also start to
crush white with his f pawn. :( The endposition Neurosis saw a mate in 7.

Sunday of the second weekend, game 10, Diep.

[Event "24th DOCC"]
[Date "2004.10.24"]
[Round "10"]
[White "Diep"]
[Black "Neurosis"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Bxc5 6. Nf3 Nc6 7. Bg5 h6
8. Bh4 g5 9. Bg3 Nh5 10. e3 Nxg3 11. hxg3 b6 12. Be2 Bb7 13. O-O-O g4 14.
Ne1 f5 15. Nd3 Nb4 16. Nxc5 bxc5 17. Qd2 Bxg2 18. Rh2 Bc6 19. a3 Na6 20. e4
Qf6 21. Nb5 Bxb5 22. cxb5 Nb8 23. Qd6 Kd8 24. b6 axb6 25. Qxb6+ Ke7 26.
Qxc5+ Kd8 27. e5 Qg5+ 28. Kb1 Ke8 29. Bb5 Qd8 30. Rdh1 Ra5 31. Rxh6 Rxh6
32. Rxh6 Rxb5 33. Qxb5 Kf7 34. Qf1 Qc7 35. Rh7+ Ke8 36. Qb5 Nc6 37. Rh8+
Kf7 38. Qc5 1-0

When my program started to suggest chasing and capturing the bishop with 7.
h6 and 8. g5 I knew it wouldn't go well. Because then Neurosis will need a lot
of time to castle on the other side, and often won't have the time and then
just doesn't bother anymore, and then his king is left in the centre.
And exactly that was going to happen.   Anyway, interesting is after 15 ..Nb4.

[D] r2qk2r/pb1p4/1p2p2p/2b2p2/1nP3p1/2NNP1P1/PPQ1BPP1/2KR3R w kq - 0 16

Where Diep chose to play Nxc5, and leaving black to capture the white queen.
Neurosis then also figured it would be a bad idea to capture the queen, and
that by declining that trade, it could even eat the pawn on g2..Which made
him very happy. Okay, but now with the open b line from black, it now
certainly wasn't going to castle long anymore either. And then the end was

game 11, Tao.

[Event "24th DOCC"]
[Date "2004.10.24"]
[Round "11"]
[White "Neurosis"]
[Black "Tao"]
[Result "0-1"]

1. c4 d6 2. Nc3 Nf6 3. d4 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nf3 Nbd7 7. Ng5
Ke7 8. e4 h6 9. Nf3 Ke6 10. Bd3 b6 11. Nb5 Bd6 12. Nd2 Nc5 13. Bc2 Rd8 14.
O-O Bb7 15. f3 Na6 16. Nxd6 Rxd6 17. Nb1 Nb4 18. Bb3 Rd7 19. Bd2 Nd3 20.
Bc3 Nc5 21. Bc2 Rad8 22. b4 Nd3 23. Nd2 c5 24. bxc5 Nxc5 25. Rfd1 Ba6 26.
a4 Nb7 27. Kf2 Rc8 28. Bb3 Nc5 29. Bc2 Rcd8 30. Ke1 Nd3+ 31. Ke2 Nf4+ 32.
Kf2 Nd3+ 33. Ke3 Nc5 34. Ke2 Ne8 35. Rab1 Nd6 36. Rb4 Nxc4 37. Nxc4 Rxd1
38. Bxd1 Nd3 39. Rb1 Bxc4 40. Ke3 g6 41. Bc2 f5 42. Ra1 f4+ 43. Kd2 g5 44.
Bb1 g4 45. a5 b5 46. Kc2 gxf3 47. gxf3 Rg8 48. Bd2 Rg1 49. Ra3 Rf1 50. Rc3
Rxf3 51. a6 Kd6 52. Ra3 b4 53. Ra5 Rf2 54. Ba2 Bxa2 55. Rxa2 Nc5 56. Rb2
b3+ 57. Kd1 f3 58. Bc3 Rg2 0-1

The queens went of the board right away. So some chances to draw for white,
especially after black also gave up his bishop-pair. Unfortunatly after 24.
bxc5 white has a very difficult to defend isolated c pawn. Hmm, then Tao
wanted to repeat moves at 30 ..Nd4, but stupid Neurosis thought he had a
very slight edge, and declined the repetition... :| hmm. So, for some
reason then all of a sudden after 33. Ke3 Tao got exited and got a plan.
(Aim for the c pawn. So it played back the f-knight to e8-d6, etc.) With
white having only Rab1 and Rb4 left to try to defend.. That didn't work out
well. :(

All in all I wasn't so lucky to get a draw against any of the top-programs,
but it was a nice tournament anyway. Neurosis is a young program anyway and
I've lots and lots of ideas so there's some hope for the future.

What else, hmm ohyeah, some other spectacles were to be seen.
For instance Pro deo's operator Hans van der Zijden had thought he was
going to be bored during the games, and has brought rubix-cubes of various
sizes to pass time. It was impressive to see he could solve a normal size
cube in under a minute blindfolded. (first looking and remembering where the
colours are ofcourse.)
Then it's fun to see Jeroen Noomen battling it out in quick blitz games
against the strong programs, and having more then his fair share of draws
and wins. So people saying computers are stronger then people are wrong, the
people just need to know how the computers play.

Hope more people will join the Leiden tournaments next time. Thanks to CSVN
and everyone else.


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Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.