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Subject: Re: Undaunted, Q5T tackles yet another position..

Author: Eelco de Groot

Date: 05:13:13 08/15/00

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I can hardly call Q5T my own creation, Ed. I am trying a bit to see if Eric
Campos' incredible Q3 personality can be modified and mollified to play under
Rebel Century 2.0 for ECTool. You posted the amazing result for the Morphy
position which Q3 found in 6 seconds. It was not entirely clear to me but I
think that was played with Q3 in the regular Century 1.0 from the CD-Rom?

I made just one change so far, as a first try I increased Attractiveness by 50
points to 250 in Q3. More or less at random and then tested it with my favourite
test-position, the position after 22. Rb5 in Rebel - Michael Rohde.

[D]1r2r2k/1p4pp/1q1p4/1R1B1p2/1pPp4/4P1Pb/1P3P1P/Q3R1K1 b - -

I really think Rebel should play 22.Qd8 here, not Qa6!

I would really love to know if this personality can also play games, Ed, that's
a bit cumbersome to organize under ECTool, there is no timing algorithm etc. But
it is just one change, one would think some more testing is in order, just 11
positions tested so far. Q5T may fail miserably in other positions.. To be
continued!

Eelco


Logs:

Morphy's move Ng3, Q5T needs 25 seconds on the Celeron 500MHz.:

[D]r1bq1rk1/ppp3p1/7p/3P2n1/2PQ1p2/1N5P/PPP2PPK/R1B2R2 b - -

Rebel Engine for ECTool. (c) Ed Schröder

Engine version   :  REBEL CENTURY 2
Rebel personality :  q5t.eng
Opening book file :  REBEL.MVS
Hash table size  :  28 MB
Analysis mode   :  Analyzing next move
Refresh interval : 500 ms

Game begin

00:00  03.25  -1.36  1..Qd7
00:00  04.00  0.09  1..Bxh3 2.Rd1 Qc8 3.Bxf4 Qg4 4.Bg3
00:01  05.02  0.66  1..Nf3+ 2.gxf3 Qh4 3.c5 Bxh3 4.Rh1 Rae8
00:02  06.00  -0.42  1..Nf3+ 2.gxf3 Qh4 3.Re1 Bxh3 4.c5 Bf1+ 5.Kg1 Bb5
00:03  06.02  0.05  1..Nxh3 2.gxh3 Qh4 3.Bxf4 Rxf4 4.Qe3 Rf6 5.Qg3 Qxc4 6.Rg1
00:08  07.00  0.60  1..Nxh3 2.d6 Qh4 3.Qd5+ Kh7 4.g3 Qg4 5.Kh1 fxg3
00:22  08.00  0.50  1..Nxh3 2.gxh3 Qh4 3.Bxf4 Rxf4 4.Qe3 Rxc4 5.Qg3 Rg4 6.Qxh4
Rxh4 7.c4 Bxh3
00:25  08.01  0.63  1..Nf3+ 2.gxf3 Qh4 3.Re1 Bxh3 4.Nd2 Rae8 5.Ne4 Qh5 6.Qxa7
Qxf3
00:32  09.00  0.58  1..Nf3+ 2.gxf3 Qh4 3.Rh1 Bxh3 4.Bd2 Rae8 5.Bc3 Bf5+ 6.Kg1
Qg5+ 7.Kf1 Rf6+ 8.Qxa7
01:05  10.00  1.05  1..Nf3+ 2.gxf3 Qh4 3.Rh1 Bxh3 4.Bd2 Rae8+ 5.Nc5 Bf5+ 6.Kg1
Qg5+ 7.Kf1 Bxc2+ 8.Nxb7
03:26  11.00  2.59  1..Nf3+ 2.gxf3 Qh4 3.Rh1 Bxh3 4.d6 Rf5+ 5.Bxf4
06:33  12.00  2.81  1..Nf3+ 2.gxf3 Qh4 3.Rh1 Bxh3 4.d6 Rf5+ 5.Bxf4 Rxf4 6.Qd5
Be6+ 7.Kg1 Qxh1+ 8.Kxh1 Bxd5 9.cxd5 cxd6 10.Re1
38:55  13.00  3.81  1..Nf3+ 2.gxf3 Qh4 3.Rh1 Bxh3 4.d6 Rad8+ 5.c5 Rf6 6.Bxf4
Rxf4 7.Qe3

What I also wanted to mention, Rebel Century 1.2 has some problems just with
this position in the regular DOSstyle interface on my computer Ed, it crashes
reproducibly at 15 ply. Maybe its the same known interface problem , I believe
Q3 also crashed. I run No Vesa with a Velocity 100 fom 3DFX, I don't know if
that makes any difference. My notes say it crashes after 02:52:02 15.00 (+)
Ng5-f3 (142813) 1.474.121.167, second time after 1.474.039.789 positions.

Log Q5T about Rebel-Rohde:

Rebel Engine for ECTool. (c) Ed Schröder

Engine version   :  REBEL CENTURY 2
Rebel personality :  q5t.eng
Opening book file :  REBEL.MVS
Hash table size  :  28 MB
Analysis mode   :  Analyzing next move
Refresh interval : 500 ms

Last Move : 22.Rb5 (Black to play)


00:00  05.00  -0.77  22..Qc7 23.exd4 b6 24.Rxe8+ Rxe8 25.Rxb4
00:00  07.03  -0.47  22..Qd8 23.exd4 Ra8 24.Rxe8+ Qxe8 25.Qd1
00:01  08.00  -0.62  22..Qd8 23.exd4 Ra8 24.Qd1 Rxe1+ 25.Qxe1 Qe7+
00:01  09.00  -0.52  22..Qd8 23.exd4 Ra8 24.Qd1 Rxe1+ 25.Qxe1 Qe7+ 26.Qd1
00:03  10.00  -0.38  22..Qd8 23.exd4 Ra8 24.Rxe8+ Qxe8 25.Qc1 Qe2 26.Rxb7 b3
00:07  11.00  -0.43  22..Qd8 23.exd4 Ra8 24.Rxe8+ Qxe8 25.Qc1 Qe2 26.Rxb7 Re8
27.Ra7
00:10  11.01  -0.43  22..Qa6
00:10  11.01  -0.30  22..Qa6 23.Qxa6 bxa6 24.Rxb8 Rxb8 25.exd4 f4 26.Re7 g6
27.f3 Rc8
00:15  12.00  -0.36  22..Qa6 23.Qxa6 bxa6 24.Rxb8 Rxb8 25.exd4 f4 26.Re7 fxg3
27.fxg3 Rf8 28.Bg2 Bxg2 29.Kxg2
00:28  12.01  -0.36  22..Qd8
01:04  12.01  -0.20  22..Qd8 23.b3 dxe3 24.Rxe3 Rxe3 25.fxe3 Qe8 26.Qd4 Qe7
27.Rxb4
02:16  13.00  -0.07  22..Qd8 23.b3 dxe3 24.Rxe3 Ra8 25.Qd4 Re7 26.Kh1 Rxe3
09:51  14.00  0.18  22..Qd8 23.Rxb7 Rxb7 24.Bxb7 dxe3 25.Rxe3 Rxe3 26.fxe3
27:42  15.00  0.00  22..Qd8 23.b3 dxe3 24.Rxe3 Rxe3 25.fxe3 Qe8 26.Qd4 Qh5
33:33  16.00  0.07  22..Qd8 23.Rxb7 Rxb7 24.Bxb7 dxe3 25.Rxe3 Rxe3 26.fxe3

(This was with Internet use during higher plies.) I have really no idea how good
the moves 23. b3 and 23. Rxb7 are in these variations..



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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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