Understand that question ?
Lets say two players play a 47 move game or 50 move or 36 move game ,
has that game ever been played by two other people ?
In all the recorded games that you have in a computer data basse has
there ever been two games with the same moves for the whole game?
I've done Fool's Mate on different people. So as long as people think
along similar lines, it is possible, although improbable as the game
progresses, and the evidence would be almost negligable when you have
to prove it by record. I do believe that more repetitive games can be
found playing computer programs that evaluate the move with no attempt
of randomization.
Yeah, novices may depend on certain openings, so the games they play
against each other will show many similarities, but you gotta think
that the loser will pick a certain point and say, not gonna go there
again.
Yes, plenty of them. All the ones I'm aware of have been `grandmaster
draws' of under twenty moves. A while ago (probably a few years,
now), I posted some examples from Karpov's play in the Ruy Lopez but I
can't find them with Google and I don't have my copy of Fritz to hand.
Dave.
--
David Richerby Gigantic Expensive Watch (TM): it's
www.chiark.greenend.org.uk/~davidr/ like a precision chronometer but it'll
break the bank and it's huge!
There certainly are games that are the same. In my database there are 48
cases of this game 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
b5 7.Bb3 d6 8.c3 O-O 9.h3 Re8 10.Ng5 Rf8 11.Nf3 Re8 12.Ng5 1/2-1/2 and
I'm sure there would be other cases of drawing lines.
There are also games where one player has fallen into an opening trap and
then resigned, such as 1.d4 d5 2.c4 e5 3.dxe5 d4 4.e3 Bb4+ 5.Bd2 dxe3
6.Bxb4 exf2+ 7.Ke2 fxg1=N+ 8.Rxg1 Bg4+ 0-1 which has appeared 4 times in
my database.
Longer games, especially ones that go some distance from the opening
would be much less likely to be duplicated, but I do remember hearing of
cases when it has happened.
> You would think there have been but i have no idea how to look that
> up..
Each game is classified by opening-- start with that.
The line I was thinking of is the one that has subsequently been
mentioned in
http://groups.google.com/group/rec.games.chess.misc/msg/ae4a16e59865e941
Dave.
--
David Richerby Slimy Chair (TM): it's like a chair
www.chiark.greenend.org.uk/~davidr/ but it's covered in goo!
Many instances of duplicate games are known, and many other unknown
duplicates have surely occurred. One known instance is described here:
http://www.chesshistory.com/winter/index.html#5465._Early_uses_of_world_chess
Scan down to CN #5466, which describes a 1939 game duplicating one
from 1860. I have read of others, but unfortunately can't recall
specifics offhand.
The example Winter gives is a 17-move game. Naturally, the chance of
duplication lessens with the length of the game. Duplicates of 50
moves would be highly improbable.
At the scholastic level, there are many duplicate decisive games.
I've only been involved in scholastics a short time and have seen
1. e4 e5 2. Qh5 d6 3. Bc4 Nf6 4. Qxf7++ twice. I'd guess that
the short games with mates on f7 or f2 have occurred hundreds
and hundreds of times.