Author: Eelco de Groot
Date: 07:59:53 02/22/01
Hi people,
This is one for the test-suites. Difficult but not impossible I think. Young
Vladimir Kramnik writes in the latest issue of New In Chess magazine 2001 Nr.1
an extensive report of his Brain Games match against Gary Kasparov. It's not a
cheap magazine but if you want first hand analysis and insights of the Champ
himself... This is just one position of game three I used for tinkering with Q5T
personality, to find some settings that work well in Century 3.0. Maybe there
are programs (Betas?) that find 39.Bd2-c3! much faster?
[Event "Braingames WCC"]
[Site "London ENG"]
[Date "2000.10.12"]
[Round "3"]
[White "Kasparov,G"]
[Black "Kramnik,V"]
[Result "1/2-1/2"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6
6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 9.Nc3 Bd7 10.b3 h6
11.Bb2 Kc8 12.Rad1 b6 13.Ne2 c5 14.c4 Bc6 15.Nf4 Kb7
16.Nd5 Ne7 17.Rfe1 Rg8 18.Nf4 g5 19.Nh5 Rg6 20.Nf6 Bg7
21.Rd3 Bxf3 22.Rxf3 Bxf6 23.exf6 Nc6 24.Rd3 Rf8 25.Re4 Kc8
26.f4 gxf4 27.Rxf4 Re8 28.Bc3 Re2 29.Rf2 Re4 30.Rh3 a5
31.Rh5 a4 32.bxa4 Rxc4 33.Bd2 Rxa4 34.Rxh6 Rg8 35.Rh7 Rxa2
36.Rxf7 Ne5 37.Rg7 Rf8 38.h3 c4 39.Re7 Nd3 40.f7 Nxf2
41.Re8+ Kd7 42.Rxf8 Ke7 43.Rc8 Kxf7 44.Rxc7+ Ke6 45.Be3 Nd1
46.Bxb6 c3 47.h4 Ra6 48.Bd4 Ra4 49.Bxc3 Nxc3 50.Rxc3 Rxh4
51.Rf3 Rh5 52.Kf2 Rg5 53.Rf8 Ke5 1/2-1/2
After 38. ..c4?!
[D]2k2r2/2p3R1/1p3P2/4n3/2p5/7P/r2B1RP1/6K1 w - -
Kramnik writes about this:
"39.Re7?! This moment was missed by many of the commentators. Of course, to find
39.Bc3! in time trouble and to calculate the subsequent raid by the king was not
easy. Black's position is very unpleasant: 39. ..Rxf2 40.Kxf2 (40.Bxe5 R2xf6
41.Rxc7 Kd8 42.Rxc4 Re6=) 40. ..Rxf6 41.Ke3 Re6 42.Kd4!+- {This move the
computer doesn't yet find in its PV for 39.Bc3 by the way. Eelco} (weaker is
42.Ke4 Nd3 43.Kd5 Nf4 44.Kc4 Re2 with a draw) {this is the line computer
chooses, see log Q5T3W5 and Q5T}. Now however a draw is arrived at by force."
This is the output of some variant settings of Q5T for Century 3.0, [Q3 but
ATTRACTIVENESS = 250, CHESS KNOWLEDGE = 130, MOBILITY = 50, SELECTIVE SEARCH =
120.]
Well don't pin me down on this, it's just the very first position I tried out
with these settings...
Thinking....
+---+---+---+---+---+---+---+---+ Kasparov,G - Kramnik,V
8 | | | *K| | | *R| | |
+---+---+---+---+---+---+---+---+ 00:00:00 00:00:00
7 | | | *p| | | | R | |
+---+---+---+---+---+---+---+---+
6 | | *p| | | | p | | | Time infinite
+---+---+---+---+---+---+---+---+ Hash 13 Mb
5 | | | | | *N| | | | Engine Rebel Century 3.0
+---+---+---+---+---+---+---+---+ Personality Q5T3W5.ENG
4 | | | *p| | | | | | anti-GM Off
+---+---+---+---+---+---+---+---+ Tactics Off
3 | | | | | | | | p | Bluff Chess Off
+---+---+---+---+---+---+---+---+ Style Normal
2 | *R| | | B | | R | p | | Strength Strongest
+---+---+---+---+---+---+---+---+ Search Deeper Search
1 | | | | | | | K | |
+---+---+---+---+---+---+---+---+ 37.. Rf7-g7 Rg8-f8
a b c d e f g h 38.. h2-h3 c5-c4
2k2r2/2p3R1/1p3P2/4n3/2p5/7P/r2B1RP1/6K1 w - -
[Event "Braingames WCC"]
[Site "London ENG"]
[Date "2000.10.12"]
[Round "?"]
[White "Kasparov,G"]
[Black "Kramnik,V"]
[Result "1/2-1/2"]
[WhiteElo "2849"]
[BlackElo "2770"]
[ECO "C67"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5
Nf5 8.Qxd8 Kxd8 9.Nc3 Bd7 10.b3 h6 11.Bb2 Kc8 12.Rad1 b6 13.Ne2 c5
14.c4 Bc6 15.Nf4 Kb7 16.Nd5 Ne7 17.Rfe1 Rg8 18.Nf4 g5 19.Nh5 Rg6 20.Nf6
Bg7 21.Rd3 Bxf3 22.Rxf3 Bxf6 23.exf6 Nc6 24.Rd3 Rf8 25.Re4 Kc8 26.f4
gxf4 27.Rxf4 Re8 28.Bc3 Re2 29.Rf2 Re4 30.Rh3 a5 31.Rh5 a4 32.bxa4
Rxc4 33.Bd2 Rxa4 34.Rxh6 Rg8 35.Rh7 Rxa2 36.Rxf7 Ne5 37.Rg7 Rf8 38.h3
c4 1/2-1/2
00:00:00 1.00 -1.60 39.Rxc7+ Kxc7
00:00:00 1.01 2.74 39.Kh2
00:00:00 1.02 2.87 39.f7
00:00:00 2.00 -0.44 39.f7 Rxf7 40.Rgxf7 Nxf7 41.Kh2
00:00:00 2.01 -0.33 39.Kh2 Rxf6
00:00:00 2.04 1.23 39.Re7 Rxf6 40.Rxf6 Rxd2 41.Rxe5
00:00:01 3.00 1.23 39.Re7 Rxf6 40.Rxf6 Rxd2 41.Rxe5
00:00:03 4.00 0.23 39.Re7 Nd3 40.g4 Nxf2
00:00:03 4.03 0.70 39.Bc3 Rxf2 40.Rxc7 Kxc7 41.Bxe5
00:00:03 5.00 0.70 39.Bc3 Rxf2 40.Rxc7 Kxc7 41.Bxe5
Kc6 (3)
00:00:03 6.00 0.44 39.Bc3 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 (3)
00:00:03 6.02 0.70 39.Bf4 Rxf2 40.Rxc7 Kxc7 41.Bxe5
Kc6 42.Kxf2 (3)
00:00:03 7.00 0.58 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 (3)
00:00:04 8.00 0.36 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 Rg6 (4)
00:00:05 9.00 -0.05 39.Bf4 Rxf2 40.Bxe5 Rf5 41.Rxc7
Kb8 42.Rxc4 Rxe5 43.Rf4 Rf7 (5)
00:00:09 10.00 0.57 39.Bf4 Rxf2 40.Bxe5 Re2 41.Rxc7
Kd8 42.Rxc4 Rxe5 43.Rd4 Kc7 44.Rf4 (9)
00:00:16 11.00 0.62 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 Rg6 43.Bf4 Rh8 44.Kh2 (13)
00:00:31 12.00 0.59 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 Rg6 43.Rd4 Ke7 44.Re4
Kd7 45.h4 (24)
00:01:21 13.00 0.70 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 Rg6 43.g4 b5 (53)
00:03:44 14.00 0.72 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7
Kd8 42.Rxc4 Re6 43.Bf4 (141)
00:16:28 15.00 -0.39 39.Bf4 Rxf2 40.Bxe5 Re2 41.Rxc7
Kd8 42.Rxc4 Rxe5 43.Rc6 Rf5 (602)
00:24:54 15.01 -0.25 39.Bc3 Rxf2 40.Kxf2 Rxf6 41.Ke3
Re6 42.Ke4 Nd3 43.Kd5 Nf4 44.Kxc4 (988)
02:27:01 16.00 -0.25 39.Bc3 Rxf2 40.Kxf2 Rxf6 41.Ke3
Re6 42.Ke4 Nd3 43.Kd5 Nf4 44.Kxc4
Re4 (6996)
07:02:20 17.00 0.06 39.Bc3 Rxf2 40.Kxf2 Rxf6 41.Ke3
Re6 42.Ke4 Nd3 43.Kd5 Nf4 44.Kxc4 (18036)
This is the output from Q5T Experimental in Century 2.0, [Q3 but ATTRACTIVENES =
250, MOBILITY = 45 (original MOBILITY = 40 also works well) SELECTIVE SEARCH =
120 (exactly the same, in Century 2.0 and Century 3.0, as original 140 though)],
it also plays 39.Bc3 but only after a pretty long search. Before that it prefers
Kasparov's 39.Rg7-e7 over 39.Bd2-f4 that the experimental Q5T3W5 wants to play.
Notice that in its last line with 39.Re7, where the eval of Q5T for 39.Re7 goes
down to -1.00, it plays 40. ..Kb7 where Kramnik played 40. ..Nxf2 in the game.
In his analysis he mentions that by then he had only some 15 seconds left on the
clock for this last move before the timecontrol. He doesn't mention any other
moves here or if there is something better than 40. ..Nxf2
Last Move : 38... c4 (White to play)
00:00 03.00 -0.19 39.Re7 Nd3 40.Rfe2 Rxf6 41.Kh2
00:00 04.03 0.70 39.Bf4 Rxf2 40.Rxc7+ Kxc7 41.Bxe5+ Kc6 42.Kxf2
00:01 05.00 0.58 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7+ Kd8 42.Rxc4
00:02 06.00 0.36 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7+ Kd8 42.Rxc4 Rg6
00:04 07.00 -0.04 39.Bf4 Rxf2 40.Bxe5 Rf5 41.Rxc7+ Kb8 42.Rxc4+ Rxe5 43.Rf4+
Rf7
00:07 07.03 0.39 39.Re7 Nd3 40.f7 Ra1+ 41.Rf1 Rxf1+ 42.Kxf1 Kd8 43.Bg5 c3
44.Re8+ Kd7 45.Rxf8+
00:13 08.00 -0.46 39.Re7 Nd3 40.f7 Kb7 41.Rf5 Rxd2 42.g4
00:14 08.01 -0.46 39.Bf4
00:15 08.01 0.59 39.Bf4 Rxf2 40.Bxe5 Re2 41.Rxc7+ Kd8 42.Rxc4 Rxe5 43.Rd4
00:21 09.00 0.62 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7+ Kd8 42.Rxc4 Rg6 43.Bf4
Rh8 44.Kh2
00:40 10.00 0.71 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7+ Kd8 42.Rxc4 Re6 43.Bf4
Rh8
01:40 11.00 0.71 39.Bf4 Rxf2 40.Bxe5 R2xf6 41.Rxc7+ Kd8 42.Rxc4 Re6 43.Bf4
Rh8
04:37 12.00 -0.40 39.Bf4 Rxf2 40.Bxe5 Re2 41.Rxc7+ Kd8 42.Rxc4 Rxe5 43.Rc6
Rf5
09:30 12.01 0.03 39.Re7 Nd3 40.f7 Nxf2 41.Re8+ Kd7 42.Rxf8 Ke6 43.Bb4 b5
28:00 13.00 0.00 39.Re7 Nd3 40.f7 Nxf2 41.Re8+ Kd7 42.Rxf8 Ke6 43.Rc8 Kxf7
44.Rxc7+
26:36 14.00 0.01 39.Re7 Nd3 40.f7 Nxf2 41.Re8+ Kd7 42.Rxf8 Ke6 43.Rc8 Kxf7
44.Rxc7+
44:42 15.00 -1.00 39.Re7 Nd3 40.f7 Kb7 41.Re8 Rxf7 42.Rxf7 Rxd2 43.Ree7 b5
01:12 15.01 -0.49 39.Bf4 Rxf2 40.Bxe5 Re2 41.Rxc7+ Kd8
39:19 15.06 -0.28 39.Bc3 Rxf2 40.Kxf2 Rxf6+ 41.Ke3 Re6 42.Ke4 Nd3+ 43.Kd5
Nf4+ 44.Kxc4
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