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andersdanielsson 84 ( +1 | -1 )
Sicilian Scheveningen Consider the positions after these two opening sequences:

A) 1.e4, c5 2.Nf3, e6 3.d4, cxd4 4.Nxd4, Nf6 5.Nc3, d6 6.Be2, Be7 7.0-0, 0-0 8.f4, Nc6 9. Be3, Bd7

B) 1.e4, c5 2.Nf3, e6 3.d4, cxd4 4.Nxd4, Nf6 5.Nc3, d6 6. Be2, Be7 7.0-0, Nc6 8.Kh1, 0-0 9.f4, Bd7

These are positions taken from two different games analyzed in a book by Danny Kopec. The only difference between the positions is white's Be3 in game A vs white's Kh1 in game B. In both games the next move was 10.Nb3. The author's comment to 10.Nb3 in game A was "This move is primarily aimed at avoiding exchanges which generally favour black's strategic goals in the Sicilian". A few pages later in the book the author's comment to 10.Nb3 in game B was "This move is rather passive and the source of white's later troubles.

My conclusion is that the author considers 10.Nb3 an OK move if Be3 is played instead of Kh1, and considers it a bad move if Kh1 is played instead. Can somebody explain the logic behind this? Also, what would your comment be to 10.Nb3 in the two games?
sualksnh 54 ( +1 | -1 )
Bd7 I guess in this case the author's comments were depending on the results of the games. 10.Nb3 is of course a good move in both games. The main idea of this move is to make the Bishop on d7 look stupid. That guy was heading for c6. The Bishop is badly placed on d7 because it blocks the best retreat square of the Nf6. This one will probably be hit by either e5 or g5. In both cases d7 would be the best square to retreat to. In case of e5 the Knight would attack this very pawn and in case of g5 it would be ready to jump to e5 if f5 follows.
anaxagoras 50 ( +1 | -1 )
We can think for ourselves here. In line B the a7-b1 does look weak for White, and Black might try to exploit it with Qb6, but the attempt would fail because Be3 can be played after Re1 and Bf3 (chessbase agrees with this plan). Sualksnh is also correct that Bd7 takes away the square for the knight. I would like to see the complete games you are writing about. Otherwise your author is just one of those laconic chesswriters who lists strings of moves and says "white has an edge."
andersdanielsson 89 ( +1 | -1 )
Line A

[Event "Halle DSV"]
[Site "Halle"]
[Date "1974.09.13"]
[Round "0"]
[White "Fichtl,Jiri"]
[Black "Malich,Burkhard"]
[Result "0-1"]
[Eco "B85"]
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.0-0 Nc6 8.Be3 0-0
9.f4 Bd7 10.Nb3 a6 11.a4 b6 12.Bf3 Qc7 13.Qe2 Rfc8 14.g4 Be8 15.Rad1 Nd7 16.g5 Nc5
17.Nxc5 bxc5 18.h4 Rab8 19.Qxa6 Nd4 20.Rd2 Rxb2 21.Bd1 Bc6 22.Qd3 Bb7 23.Bxd4 cxd4 24.Nb5 Qc5
25.f5 Qe5 26.Qxd4 Bxe4 27.Qxe5 dxe5 28.fxe6 fxe6 29.Nd6 Bxd6 30.Rxd6 Bf5 31.Re1 Rb1 32.Kf2 Bxc2
33.Bxc2 Rxc2+ 34.Re2 Rxe2+ 35.Kxe2 Ra1 36.Rxe6 Rxa4 37.Rxe5 Rxh4 38.Kf3 Kf7 39.Kg3 Ra4 40.Rb5 Kg6
41.Rc5 Kh5 42.Kf3 Ra1 43.Rc7 Kg6 44.Rc5 Rg1 45.Kf4 Kh5 0-1

Line B

[Event "SCO-ch"]
[Site "St Andrews"]
[Date "1981.07.??"]
[Round "7"]
[White "McKay,Roderick M"]
[Black "Kopec,Danny"]
[Result "0-1"]
[Eco "B85"]
1.e4 e6 2.d4 c5 3.Nf3 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.0-0 Nc6 8.Kh1 0-0
9.f4 Bd7 10.Nb3 a6 11.a4 Rc8 12.Be3 Nb4 13.Bd3 e5 14.a5 Be6 15.Nd2 exf4 16.Bb6 Qe8
17.Rxf4 Nd7 18.Bd4 Ne5 19.Be2 Bd8 20.Rf1 Nec6 21.Bb6 Bxb6 22.axb6 Nd4 23.Nf3 Ndxc2 24.Rc1 Ne3
25.Qxd6 Nxf1 26.Qxb4 Ne3 27.Qd4 Nc4 28.e5 Qd8 29.Qe4 Nd2 30.Qxb7 Nxf3 31.Bxf3 Rb8 32.Qxa6 Qxb6
33.Qxb6 Rxb6 34.Na4 Rb4 35.Nc5 Rxb2 36.Nxe6 fxe6 37.h3 Rb5 38.Re1 Rf5 39.Bg4 Rbxe5 40.Ra1 Rf6
41.Ra8+ Kf7 42.Kh2 Kg6 43.Ra6 Re1 44.Bf3 Rf5 45.Kg3 Kf6 46.Kf2 Rc1 47.Kg3 Rc3 48.Ra4 g5
49.h4 h6 50.hxg5+ hxg5 51.Ra6 Rf4 52.Rb6 Kf5 53.Rb8 e5 54.Rf8+ Kg6 55.Rg8+ Kf6 56.Rf8+ Kg7
57.Rxf4 gxf4+ 0-1

I would most probably play Nb3 in both games.

gibo 23 ( +1 | -1 )
Much more popular than 6.Be2 is 6.g4!, which is why many players who play the scheveningen dont play it through its pure form. Most players now days play it through either the najdorf or taimanov to avoid 6.g4
andersdanielsson 47 ( +1 | -1 )
gibo I play the scheveningen and I don't mind facing 6.g4. The reason for that is since I play the "pure" scheveningen I have become familiar with the positions which can arise after 6.g4, for example patterns, strong and weak points, strategic goals etc.

Perhaps I can score a point or two from the fact that opponents usually don't get the chance to play 6.g4 that often and therefore aren't familiar with the opening. That's what I hope for anyway :)

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