@Ludo2001 said in #15:
... in e5 as I said, a player who owns White may find this position comfortable because when the pattern resembles that of caro-kann, he may be used to playing this structure ...
@kindaspongey said in #16:
... You have talked about 1 e4 d5 2 e5 c5 3 c3 Bf5 4 d4 e6, but that is the same position as the one that results from 1 e4 c6 2 d3 d5 3 e5 Bf5 4 d4 e6 5 c3 c5. With experience playing against the Caro-Kann, White is quite likely to want something better than the sort of position that results from 1 e4 c6 2 d3 d5 3 e5 Bf5 4 d4 etc. ...
@Ludo2001 said in #19:
... I must have missed something
because 2 d3 is a bad move in the caro-kann opening
For that reason, if white has previous experience playing against the Caro-Kann, White is unlikely to want to reach the position resulting from 1 e4 c6 2 d3 d5 3 e5 Bf5 4 d4 e6 5 c3 c5.
@Ludo2001 said in #19:
in what I said, I just wanted to say that the white structure resembles that of the caro-kann when playing e5
I didn't mean the identical sequence of 1 e4 d5 2 e5 c5 3 c3 Bf5 4 d4 e6 and 1 e4 c6 2 d3 d5 3 e5 Bf5 4 d4 e6 5 c3 c5. ...
YOU gave the line1 e4 d5 2 e5 c5 3 c3 Bf5 4 d4 e6
( https://lichess.org/forum/general-chess-discussion/why-doesnt-the-opening-noun-sandinavian-defense-advance-variation-does-it-not-exist- #10)
that results in a position that IS identical to the position after 1 e4 c6 2 d3 d5 3 e5 Bf5 4 d4 e6 5 c3 c5. Since White is unlikely to want to reach the position resulting from
1 e4 c6 2 d3 d5 3 e5 Bf5 4 d4 e6 5 c3 c5,
White is also unlikely to want to reach the position resulting from 1 e4 d5 2 e5 c5 3 c3 Bf5 4 d4 e6 (the line given by YOU).
@ColossusChess said in #14 ( https://lichess.org/forum/general-chess-discussion/why-doesnt-the-opening-noun-sandinavian-defense-advance-variation-does-it-not-exist-?page=2 ):
... 2.exd5 is a much better move and therefore 2.e5 is a mistake ... Even if the position is still equal afterwards. ...
@Ludo2001 said in #1:
... basically [ColossusChess] says that the opening is an error while Stockfish itself judges that the opening is concretely equal to 0.0 ...
@kindaspongey said in #16:
... I think that it is fairly common for a “0.0” option like 1 e4 d5 2 e5 to be regarded as an error by White when there is an alternative (2 exd5) that is good for perhaps a 0.3 advantage.
@Ludo2001 said in #19:
... ColosseChess did not specify at the beginning that it is because of the alternative exd5, that therefore the move e5 is an error, in the first lines one could believe from this first saying that pushing e5 is concretely a error
as if the evaluation gave a white disadvantage, ...
A move can be an error without giving a disadvantage. After 1 g4 e5 2 f4, 2...exf4 would not give Black a disadvantage.
@Ludo2001 said in #19:
... I could have understood better, but hey..., on the other hand ColassusChess could have been more precise, ...
... if the player chooses to play e5, and it is done on purpose, one cannot deny that it is an error on his part since he did it on purpose ...
I suspect that there are many who would consider it acceptable to characterize 1 e4 d5 2 e5 as an error regardless of the purpose.
@Ludo2001 said in #19:
... it's only because when we play exd5, it increases the risk for white to have a good position and often win that e5 is a mistake, that's all
I would suggest that you accept that some may consider "error" to be a reasonable alternative to "mistake" as a description.
@Ludo2001 said in #19:
in e5 there can be interesting lines,1. e4 d5 2. e5 c5 3. c3 d4 4. Bb5+ Bd7 5. e6 Bxb5 6. exf7+ Rxf7 7. Qb3+ e6 8. Qxb5 ...
If Black plays 3...Bf5 instead of 3...d4, one does not get this line.


