Author: Mark Young
Date: 10:34:46 10/25/98
Go up one level in this thread
On October 25, 1998 at 13:20:28, Dann Corbit wrote:
>On October 25, 1998 at 11:47:36, Reynolds Takata wrote:
>>Can you make your own EOC with Reb10?
>Pardon my blazing ignorance, but what is an EOC?
Here is what EOC is. as explained on the www.rebel.nl site.
REBEL10 comes with a chess tree with so much information on a position that we
will call this feature the Encyclopedia of Chess or simply EOC.
The EOC chess tree on the Rebel10 cdrom is created from the standard 300,000
game database that also comes with Rebel10.
The Rebel10 EOC chess tree contains 16,000,000 (16 million) unique chess
positions.
Apart from REBEL10 a special EOC cdrom (REBEL EOC) is available with a chess
tree of 50,000,000 (50 million!) unique chess positions. As far as we know this
(by far) is the biggest commercial chess tree available.
REBEL EOC is created from a highly improved version of Million Base. This new
improved database contains over 1,000,000 (1 million) chess games and is a part
of REBEL EOC too provided in REBEL and CBF database format.
REBEL EOC is a separate chess product on Cdrom sold for $59.95 or DM 99 or HFL
99.
Goals of EOC
Help you to make the right moves based on the statistics of Grandmasters and the
chess history of 150 years.
If you need help in a position just ask the EOC of 50,000,000 (50 million)
unique positions and then make up your mind which move to play.
An unique reference for opening preparation because all the major games of the
last 150 years are in EOC.
Alternative goals of EOC
Allow REBEL to make use of EOC.
REBEL is able to use EOC as a normal opening book! Ever seen an opening book of
50,000,000 (50 million) unique opening positions?
Allow REBEL to consult EOC and depending what is found REBEL will adjust its
play playing the good moves and avoiding the bad moves found in the 50,000,000
chess tree. We believe it makes REBEL a stronger player.
Especially the last option is a total new development in computer chess as the
chess engine within a second is able to consult the complete human chess
history, draw its conclusions, filter the bad moves and stimulate the good
moves.
It's really nice to see REBEL playing pawn sacrifices of Grandmasters on its own
because of EOC. Or simply playing 2.c4 after 1.d4 d5 on its own without the need
of an opening book. Another nice example of EOC comes from the recent match
Rebel-Anand. In the last tournament game the following position was reached.
REBEL10 - Vishy Anand
Position after 10.. Qc8!?
After this move Rebel10 was out of book and played 11. Bb5 a good move as Anand
later confirmed. After the game there was a huge discussion in several Internet
chess groups. Rebel should have played the interesting pawn sacrifice 11. d5?!
No doubt this is an interesting alternative for a computer to play against a top
grandmaster like Anand as the EOC reports 2 won games after 11. d5?! both won
for white and therefore REBEL10 (when EOC is active) will play the move 11. d5?!
on the 10th ply because of the help of EOC.
Which move is better? 11. Bb5 or 11. d5?! Rebel played without EOC against
Anand. Should Rebel have played with EOC? We don't know the answer. Both moves
look good. Let's say the last word is up to the better analists amomg us. In the
meantime we consider this option as very useful for further investigation to
improve Rebel's playing strength even more the coming years.
The information from EOC
Below is an example from the REBEL10 (16 million) EOC chess tree. The chosen
position for the example is the start-position.
MOVE + = - PERC TOTAL ELO PERF SCORE ECO SHORT NAME
e2e4 47289 47159 36779 (54.0%) 131227 2375 2404 0.10 B00 Kings pawn
d2d4 40099 42980 27572 (55.7%) 110651 2396 2432 0.10 A40 Queens pawn
g1f3 9894 12610 6795 (55.3%) 29299 2408 2444 0.10 A04 Reti
c2c4 9051 10375 6070 (55.8%) 25496 2402 2438 0.04 A10 English
g2g3 964 1062 677 (55.3%) 2703 2390 2426 -0.05 A00 Benko
f2f4 274 229 345 (45.8%) 848 2307 2271 -0.11 A02 Bird
b2b3 279 253 272 (50.4%) 804 2371 2371 -0.04 A01 Nimzovich
b1c3 132 103 176 (44.6%) 411 2304 2261 0.06 A00 Dunst
b2b4 79 56 87 (48.2%) 222 2309 2295 -0.08 A00 Polish
d2d3 44 36 47 (48.8%) 127 2316 2302 0.00 A00 Mieses
e2e3 29 30 60 (37.0%) 119 2314 2212 0.05 A00 Kruijs
c2c3 18 12 30 (40.0%) 60 2313 2241 -0.05 A00 Saragossa
TOT 108214 114943 78969 (54.8%) 302126 2387 2416 | |
| |_ ECO code
| | | | | | | | |
| | | | | | | | |______ Rebel score
| | | |
| Won Draw Lost Score | | |__ ELO performance
| Games Games Games in % | |
| | |_______ Average ELO
| |
|_ Moves in the EOC tree |_____________ Total positions
With all these information it is not so difficult to find out if a move is good
or bad. For example: If a move scores more than 55% and the move is played more
than 100 times and the average elo is greather than 2500, then it looks very
safe to play this move. As an extra you can also rely on the Rebel score.
But the REBEL concept of EOC goes a few steps further. A second part of valuable
information (more text related) is also available . Again the chosen example is
the start-position.
e2e4 Kasparov (293),Karpov (413),Anand (532),Kramnik (63),Tal (465)
d2d4 Kasparov (412),Karpov (538),Anand (35),Kramnik (90),Tal (85)
g1f3 Kasparov (57),Karpov (90),Anand (26),Kramnik (226),Salov (59)
c2c4 Kasparov (112),Karpov (115),Anand (12),Kramnik (14),Salov (30)
g2g3 Anand (1),Ivanchuk (3),Kortchnoi (23),Timman (7),Tal (5)
f2f4 Timman (1),Fischer (1),Benjamin (1),Smyslov (1),Bronstein (3)
b2b3 Anand (1),Kramnik (1),Timman (5),Fischer (4),Adams (4)
b1c3 Ivanchuk (1),Christiansen (1),Benjamin (2),Miles (1)
b2b4 Fischer (2),Petrosian (1),Miles (2),Smyslov (1)
d2d3 Kasparov (1)
e2e3 Kasparov (3),Gunsberg (2),Zukertort (1)
c2c3 Benjamin (1)
Explanations
This overview from the chess tree gives you a list of TOP rated Grandmasters who
ever played the move and what is more important the number of times the
Grandmaster has played that move. Very useful to make up your mind if a move is
good enough to play.
The REBEL tree keeps track of the world's famous 60 chess players. You will find
the names of the super old goodies like Steinitz, Tarrasch, Morphy and so on
back in the REBEL chess tree.
Also the statistic is interesting for book preparation. Looking at the above
output one may conclude Anand doesn't like to open with 1.d4, 1.c4 or 1.Nf3 but
clearly prefers 1.e4
Rebel10 will display all these information on your screen within a second for
every new position. By clicking on the moves you in the most convenient way can
scroll through the whole EOC of 50 million unique chess positions.
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