CAPÍTULO 3 RESULTADOS DE LA INVESTIGACIÓN
3.8 INFORME FINAL
16.Bxg5 Kf7, and the fork on d3 will
follow anyway. This might transpose
into the main line of the featured
game.)
16.Bxd3 Nxd3+ 17.Ke2 Nxcl+18.Rxcl fxe6 19.Bxg5 Kf7:
White has two pawns for the sacri ficed exchange, and is hoping to play for a win without any risk. It is up to ·you if you want to enter this position; not everyone is able to patiently defend, especially if they are KID players!
Anyway, the situation is not as dangerous for Black as it seems. After all, there is an open file for the rooks, so they will not be worthless.
n important thing for you to here is that we usually want to trade our bishop for the opponent's knight.
We continue from the diagram: cl) 20.Be3:
ell) Black's best is trading right away with 20 ... Bxc3! 2l.Rxc3 e5.
c12) But 20 ... Bd4 is not bad either: 2l.Ndl Rac8 22.Nf2 e5 23.Nd3 Bxe3
24.Kxe3
(not 24.Nxe5+? Ke6 25.Kxe3
Kxe5-+)
24 ... Kf6 25.Rfl Rc6 26.f4 exf4+ 27.Nxf4 Kg7 28.e5 Ra6 29.Ke4 Rd2, and the position was unclear in Khairullin-Gallagher, Aix-les-Bains 2011.c2) 20.Ndl Bd4 Creating the threat Rd8-g8. As explained above, Black wants to get rid of the white knight. 2l.g3 Rd7 22.Nf2 Bxf2! Chapter 2: The Siimisch Variation 141
23.Kxf2 e5! Once the White knight is off the board this move can and should be played. This is also the reason why we need to exchange the bishop for the knight; it can no longer torture us on the d5 square. Next, Black places his pawns on the color of the bishop and levels the chances. 24.Ke2 Ke6 25.Be3 b6!=, in Atalik Berg, Eretria 2011.
Compared to the line 11.Bc5-e3,
after
ll.Bf2
the bishop is seeminglynot in danger. However, Black still finds enough counterplay with 11...Nde5. Once again, the d3 square is the ultimate temptation for the black knights. 12.Nf4:
a) It is important to know that without the bishop on e3, the move 12 ... Nb4?! is just a shot in the dark. Black did well in the following game, but only thanks to some mistakes by his opponent: 13.RdH Rxd1+ 14.Kxd1 g5 15.Nfd5 Ned3 16.Bxd3
Nxd3 17.Bg1
(better was 17.Ke2 Nxf2
18.Kxf2 Bd4+ 19.Ke2 K{B 20. h4±)
17 ... Nxb2+ 18.Kc2 Nxc4 19.Nc7 Bh30
20.gxh3 ReS 21.N3d5
(better was
21.N7d5 K{B 22.Ne2 Ne5+ 23.Ndc3±)
21...Kh8= 22.Bxa7 e6 23.Kd3 exd5 24.Nxd5 Ne5+ 25.Ke3 Ra8 26.Bc5 142 Chapter 2: The Siimisch Variation
Rxa2 27.Nb6? Rb2+ with an eventual draw, in Gordon-Williams, Liverpool 2008.
b) 12 ... b6! Simple and good. Black finishes his development and makes the most of his lively pieces. White has tried:
b1) 13.Be2 White manages to castle, but this is the only benefit of the move. Black creates strong counterplay after 13 ... Ba6 14.Nb5 Nb4 15.0-0 Bxb5 16.cxb5:
bll) And now the rook dream is completed after 16 ... Rd2 17.Rab1 Bh6 18.Bg3 Bxf4 19.Bxf4 Rxe2 20.Bxe5 f6
(not 20 ... Nxa2?! 21.Ral Nb4 22.Rfdl±
maintaining
pressureon a7)
21.Bd4 ReB?, or 21...Nxa2 22.Ra1 Rd2 23.Bxf6 exf6 24.Rxa2 ReB=.b12) This is better than 16 ... Bh6 17.Bg3 Ned3 18.Nxd3 Nxd3 19.Bxd3 Rxd3 20.Rfd1 Rad8 21.Rxd3 Rxd3 22.BeH, Akesson-Huschenbeth, Stock holm2009.
b2) 13.Nfd5 e6 14.Nc7 RbB: b21) Exchanging rooks at the moment seems sensible for the first player. Still, after 15.Rd1 Rxd1+
16.Kxd1 Nb4
Black already has two strong threats, either to trap the white horse after
a7-a6 and Rb8-b7, or to transfer the rook to the open file with Rb8-b7-d7 (or Bc8-b7 and Rb8-d8) at once. Possible continuations are:
b211) 17.Bg3 Bb7 18.a3 Rd8+ 19.Kcl Nbd3+: b2111) 20.Bxd3 Rxd3 2l.Kc2
(2l.Rdl Rxdl+ 22.Nxdl Nxc4+)
2l...Rd7 22.Ne8(22.N7b5
a6)
22 ... Nxc4 23.Nxg7 Kxg7=. b2112) 20.Kc2 White is seemingly doing fine, but the following tactical strike clarifies the situation · in Black's favor: 20 ... Nxc4! 2l.Bxd3 Ne3+ 22.Kd2 Nc4+= and the first player should settle for a draw, as the line: 23.Ke2 Nxb2 24.Bb5 Bxc3+ is favorable for Black only.b212) 17.N7b5 Rb7 This time the rook is transferred via the seventh rank. The advantage of the rook lift is the fact that the queen's flank is now secured, which is not the case with White's. 18.Be3 Or else the bishop from g7 might like to appear on the cl-h6 diagonal. 18 ... Rd7+ 19.Kcl Nbd3+ 20.Bxd3
Rxd3 2l.Bd4 Bh6+ 22.Kbl
(or 22.Kc2
Rd
2
++)
22 ... Nxc4=.I
know that this position is now veryfar from the opening, but it makes
sense to continue the analysis in order to make the reader feel the potential of Black's position.
b2121) The pawn is taboo:
23.Nxa7? Rxd4 24.Nxc8 Rd2-+. b2122) 2 3 . Rd l is, obj ectively speaking, White's safest move, and after 23 ... Rxdl+ 24.Nxdl a6 25.Na7
Bb7 26.b3 e5
(or 26 ... Nd2+ 27.Kc2
Nfl=)
27.Bgl Nd6 28.Bxb6 f5! 29.Bc5 Nxe4! ! I would love to rely on the pawns, for example: 30.fxe4 Bxe4+ 3l.Kb2 Bxg2 32.Ne3 Bxe3 33.Bxe3 f4 34.Bd2 g5 35.Kc2 Kf7+.b22) 15.Bh4 has had good results and was tried by GM Rowson.
Nevertheless, it should not pose any real problems for Black after ... Nd3+ or ... Rd7:
b221) 15 ... Nd3+ 16.Bxd3 Rxd3:
b2211) 17.Ke2 Rd7 18.Ne8
(better
is 18.Bg3�)
18 ... Ba6 19.Nf6+ Bxf6 20.Bxf6 Bxc4+ 2l.Ke3 Rd3+ 22.Kf4 e5+ 23.Kg3 Rd6 24.Bg5 f6 25.Be3 Rbd8 26.Kf2 Nb4+ Zaja-Saric, Sibenik 2008. b2212) 17.Bg3 might be better, when Black cannot get his initiative going the way he would like:b22121) 17 .. . Rb7 18.Ke2 Rd4
19.Ne8 Rxc4 20.Nxg7
(20.Nd6?
Rb4 + 21.Nxc8? Rxb2+ 22. Kd3 Rd7+
23.Kc4 Na5#)
20 . . . Kxg7 2l.Rhd1 Rd7 22.Rxd7 Bxd7 23.Kd3 Rb4 24.b3 f5oo. b22 122) 17 ... Bxc3+ 18.bxc3 Rb7(18 .. . e5 19.Rcl f5�).
b222) If you want calm equality, you can choose the continuation 15 ... Rd7 16.Ne8 Nd3+ 17.Bxd3 Bxc3+ 18.bxc3 Rxd3 19.Ke2 Rxc3 20.Rhc1 Ra3 2l.Bf6 e5= followed by Bc8-e6.
ll.Ba3 Bb7
Radjabov follows this move with a logical novelty. Two more contin uations deserve serious investiga tion.
White managed to get something
from the opening after
ll
...e6
12.Rd1Ba6 13.Nb5 Rxd1+ 14.Kxd1 Rd8+ 15.Kc2 Bh6 16.Nec3 Nh5 17.Kb1 Bxb5 18.cxb5
(18.Nxb5? Rdl+ 19.Kc2
Rcl+ 20.Kb3 Na5+ 21.Ka4 Nxc4+)
18 ... Ne5 19.Be7! Rd7 20.Bh4;t;, in Khenkin-Hausrath, Saarbruecken 2009.144 Chapter 2: The Siimisch Variation
However, the bishop might as well first visit the a6 square. An other recent top GM encounter saw
U •••
Ba6
12.Nb5 Rd713.Nec3