I suppose you mean "named" openings?
Which Opening Runs "Deepest"
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Move 11 is nothing for today's theory. I don't know how reliable Wikipiedia is, but it states on Marshall Attack in the Ruy:
Since Black's compensation is based on positional rather than tactical considerations, it is difficult or perhaps impossible to find a refutation, and variations have been analyzed very deeply (sometimes beyond move 30) without coming to a definite determination over the soundness of Black's gambit.
I have once played a novelty (as white) at move 46 in an Averbakh King's Indian. The move was a suggestion of GM Grivas, in the well-known Averbakh pawn-up endgame, which should be now considered as exhausted (draw).
@rooperi, yes named openings would be preferable, but even a list of moves would be nice, such as Marshall attack, main line, which continues...
@ajmeroski, yeah, I have read that on the ruy on wikipedia as well, but it gives no examples of a 30 move variation. That's what I'm looking for. The specific line that goes 30 moves without a novelty being introduced.
@IM pfren, what is this line in the Averbakh King's Indian? Can you supply it in a game below?
Grunfeld has a theoretical line that goes to the 30th move according to "Beating the King's Indian and Grunfeld."
@gundamv can you provide the notation of that theoretical line? I'm not looking for variations, but actual solid lines that GMs plow through in less than ten minutes of clock time because they are so route and the real thinking doesn't start until move 30. Everyone says they exisit but no one has given me a line.
pfren wrote:
I have once played a novelty (as white) at move 46 in an Averbakh King's Indian. The move was a suggestion of GM Grivas, in the well-known Averbakh pawn-up endgame, which should be now considered as exhausted (draw).
That just sounds insane.
For me the deepest opening is the Marinas Trench.
I know the soltice (I think thats how you say it) variation of the Sicilian Dragon is a long line...
13 moves long
One of the Sicilian variations is my guess.
Me and a friend set up the roy lopez and played from the end of the main line. Position was set up after 16 moves.
ChessCamper wrote:
@gundamv can you provide the notation of that theoretical line? I'm not looking for variations, but actual solid lines that GMs plow through in less than ten minutes of clock time because they are so route and the real thinking doesn't start until move 30. Everyone says they exisit but no one has given me a line.
The author of the book measured whether an opening is theoretical by how deep players play a particular line.
The Grunfeld line I mentioned lasted until the 30th move. That is, the players in different games played the exact same moves until move 31. This can been seen in the two games cited in the book:
Erdos-Sammalvuo (Budapest 2004): http://www.chess.com/games/view?id=1257585
Lobron-Koster (Amsterdam 2004): http://www.365chess.com/view_game.php?g=2975792. Move 31 Re1 is a theoretical novelty here according to the author of the book I mentioned.
Hope that helps.
What is the "deepest" opening line? I suspect its a variation of either the Lopez or Sicilian. The longest one I know with a specific name is the Marshall attack in the Lopez which runs past 11 moves, but are there other variations?