Author: Thorsten Czub
Date: 08:36:49 05/24/98
Go up one level in this thread
On May 24, 1998 at 04:06:56, Georg Langrath wrote:
>>>Now and then I read about Chess Tiger. But what peogram is it? Have I
>>>misssed something important?
>>1.Nimzo98 5 points
>>2.Clever+smart 5 points
>>3.ChessTiger 4.5 points
>>4.PConners 4.5 points
>>5.Gandalf 4.5 points
>>6.Zugzwang 4.5 points
>>7.comet 4.0 points
>>8.diep 4.0 points
>>9.ant 3.5
>>10.amy3 3.5
>>11.sos 3.0
>>12.xxxx2 3.0
>>13.0patzer 2.0
>>14.breakthrough 2.0 points
>>15.neurologic 1.5 points
>>16. diogenes 1.5 points
>Thank you. Very interesting. I think that many members here would be
>intersted to see some games. Perhaps you could post some of them here
>as pgn-files?
>Georg
Ok - game number ONE:
In the first game ChessTiger (Pentium2, 266 Mhz) had a very strong
opponent. The parallel-hardware Zugzwang
uses was very strong (44 x Mac 604/500 makes 200.000 NPS) and zugzwang
itself is the proud of the paderborner-
university.
The opening Zugzwang chose was prepared. They have strong chess players
in their team who try to guide the
program into positions that are very useful for programs. But - as
always in life, idea and reality go different ways.
And human-chess and computerchess are 2 different kind of shoes.
[Event "7th IPCCC"]
[Site "Paderborn(Germany)"]
[Date "11.2.98"]
[Round "1"]
[White "Chess Tiger"]
[Black "Zugzwang"]
[Result "1-0"]
[ECO ""]
[Opening ""]
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.0-0
0-0 9.Qe2 Nbd7 10.e4 Bg6
11.Bd3 Bh5 12.e5 Nd5 13.Ne4 Be7 14.Ng3 Bg6 {first computed move of
zugzwang} 15.Bxg6 fxg6 16.Ne4 {here
tiger had to think for the first time} Qb6 {one of the first not forced
moves for Zugzwang, and the result a is typical
computer-move: theory was h6 or c5. But computers, unable to understand
positional stuff, concentrate on attacking
b-pawns and "developing" the queen. Later we discussed about this move
and I think Rainer Feldmann said
something alike they do not anymore penalize the queen for these easy
attacks and too early "developments". They
have done it in older versions of zugzwang, but they thought ...
whatever they thought, murphys law shows: if you
make a mistake, it will be found by the program in the next tournament.}
17.a5 {Tiger was irritated about this
move. It had to consider 877" about a5 ! It really looked as if tiger
has seen the queen move was bullshit.} Qb3
18.a6 {very aggressive - but it works again} b5 {why not bxa6 or b6 and
anything would be ok.But this moves
brings the white queen into trouble.} 19.Rd1 {! here Tiger says +0.75 !!
very high and speculative. But why not,
maybe it saw the disaster in forward ? Hiarcs idea of 19.Qd1 is really
anti-positional since exchange of queens is
only in interest of black ! So maybe +0.75 is really ok - if you want to
tease the queen further. How many programs
plan Rd1-d3 here and evaluate positive ??? try out with your programs}
h6 {square g5 was too strong for white.}
20.Rd3 Qb4 21.Qd1 {even normal programs like hiarcs evaluate +1.31 at
this stage, ChessTiger said +2.18 !! I
guess at this part of the tournament nobody believed that these high
evaluations should be taken serious. After the
tournament some people maybe thought about them. How can this happen so
early. I mean, zugzwang only made a
few moves and thats it. One major mistake in misplacing the queen,
because it had no penalty for too early-queen-
movenments, and you are in a problem.} Bd8 22.Nd6 {Tiger said +2.98 !!
Really a tiger !! The whole game has
now the trapped queen as topic. Hiarcs6 says +2.27 here} Rxf3 23.Rxf3
Bb6 24.Rd3 {puh - tiger considered 1303"
on this move. For a long time I was really unsure if it has crashed or
if a bug in the time-control-algorithm. But
anything was ok. Christophe had done a good job...+2.18 said tiger} c5
25.Kf1 {again 837" consideration for this
karpov-like king-move. +2.76. The idea was to overprotect e1 to make the
white queen moveable} c4 26.Rg3 Nf8
27.b3 {Tiger evaluated very high 3.72 pawns !!} c3 28.Rd3 Bd8
29.Ne4 {+3.84} Rc8 30.Ba3 {+4.16} Qa5 31.Bc5 c2 32.Qc1 Qc7 33.Rd2 Qc6
34.Qxc2 b4 35.Qd3 Rc7 36.Bd6 Rf7
37.Re1 Qd7
38.Bc5 {+4.38} Rf5 39.Qc4 Be7 40.Nd6 Rh5 41.h3 {+4.60} g5 42.f3 Rh4
43.Nb5 Rf4 44.Nxa7 g4 45.hxg4 Bh4
46.Ree2 Bg3
47.Nc6 Qxc6 48.Bxf8 Qa8 49.Bd6 Kh7 50.Qd3+ Kg8 51.Rc2 {5.24} Nc3 52.Qc4
Kh7 53.Bxb4 {+6.00} Nxe2
54.Kxe2 {+6.74} Qe8
55.Qd3+ Kh8 56.a7 {+8.66} 1-0
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