Manuscript VIII. To examine the association between time engaged in television viewing and/or playing with videogames and a clustered cardio-metabolic risk in adolescents
3. Materiales y Métodos [Materials and Methods]
3.3. Métodos de medida
I tried here a very seldom played move. Black usually continues with 6 ... e6 or 6 ... dxc4 and these moves are popular and solid. Naturally 6 ...
J.e6 seems to be rather strange, since the bishop is placed in front of the e7-pawn, therefore many players are quite skeptical towards that ap
proach.
For example, Mikhail Botvinnik considered that after 7.ii.x£6 gxf6 8.cS, or 7 ... exf6 8.cS, White was better, but tournament practice did not confirm that evaluation. In fact, strangely enough,) nobody has proved yet how White can obtain any serious advan
tage in that line. I chose 6 ... ie6 as a purely chess-weapon (that position is very complicated and it is not well an
alyzed yet) and also because of some psychological reasons. I had never played before the variation with 6 ...
J.e6 and I hoped that my opponent would not be well prepared for it.
In general, that is what happened.
I bad no problems in the opening and my adversary lost so much time on his opening moves that he was later in a time-trouble.
7.J.e2
That is a relatively calm line. There arise more complicated positions
87 with approximately equal chances af
ter: 7.hf6 gxf6 8.cS, or 7 . . . exf6 8.cS.
White would not achieve anything much with 7.llJf3, since after 7 ... llJe4!?, Black's counterplay is quite sufficient as contemporary tournament prac
tice shows. It deserves attention for White to try 7.a3!? and that it a move preferred by V.Topalov and M.Adams.
In his game against me at the tourna
ment "Kremlin Stars" Moscow (rapid) 1996, Garry Kasparov played like that against me. There, I did not check the well familiar theoretical line 7 ...
�d7, (which is presently considered to be quite reliable) against the world
champion, but I tried instead a novelty - 7 ... ig4 and after: 8.f3 ie6!? 9.cS g6 1O.ibS ig7 1l.llJge2 0-0, I obtained a quite reliable and satisfactory posi
tion.
7 ... �a5!
That is the best move for Black. Its idea is in case of the standard reaction for White in similar positions - 8.cS, to answer 8 ... llJe4!?, with a counter
play, which would be quite sufficient to equalize completely.
8.llJf3
It is not dangerous for Black if White plays 8.ii.x£6 and I believe
Black's simplest method to counter that is 8 ... exf6!?, with an excellent counterplay. Here, in case of: 9.cxds .b:ds 1O.�f3 �b4 11 . .b:dS (or 11.�e2+
It>f8! and Black's position is even slightly better) 11...�xdS, or 1O.lLlf3 O-O-O!? and Black's prospects are not worse at all.
8
• . •dxc4
I did not like the move 8 ... lLle4, be
cause of: 9.0-0!? lLlxc3 1O.bxc3 dxc4 (In case of: 1O ... �xc3 11.gbl, Black lags in development considerably and White has a very dangerous initiative for the pawn.) 11.1f4 and although objectively Black should not be worse, I did not wish to play a position like that. White would have the initiative, despite being a pawn down.
9. 0 - 0
9 ..
.gd8!
It was too risky for Black to try 9 ... 0-0-0, due to 10.�cl! and White's compensation for the pawn would be more than sufficient. Here, in case of:
1O ... lLlxd4 11.lLlxd4 �d4, it is quite strong for White to follow with 12.b4!
with a powerful initiative. That varia
tion illustrates the danger of Black's lag in development. After 1O ... lt>b8, it
seems very good for White to continue with 1l.b3!? and White's initiative is again threatening.
10
.�cl
It deserved attention for White to try 1O.gel!? with a complicated dou
ble edged position. Now, it is bad for Black to play 10 ... lLlxd4?, because of:
1l.lLlxd4 �xgS 12.lLlxe6 fxe6 13.�a4+
and his position would be hardly de
fensible. Still, after 1O ... h6!, the situa
tion would have remained rather un
clear.
1 0 ... h6 1l.1d2
In case of: 1l.1e3 gS! Black has a good game.
1l
... lLlxd4!
That is the most precise move. Fol
lowing 11...gS, White can enter the variation (It is practically forced for Black.): 12.dS ! lLlxdS 13.lLlxdS �xdS 14.�c3 f6 IS. �e3! and his initiative is quite sufficient to compensate his two-pawn deficit.
12.�xd4 gxd4 13.b4! �d8 14.
1e3 gd7 15.1dl
That is a mistake after which White must still prove that his compensation is worth a couple of pawns. He had better play IS . .b:a7! and that would
Rogers-Dreev, Biel 1993
have led to a very complicated posi
tion in which I thought that after IS ...
gS, or IS ... g6, Black's prospects would not have been worse.
15
. • .a6
16.b5?!
This is another imprecision and this time it is quite serious, because White already does not have enough compensation for the sacrificed mate
rial for sure. It was stronger for him to continue with 16.lLla4! and he would have preserved good chances to main
tain the balance.
16 ... axb5 17.gbl g5 1S.
gxb5
1J.g
719.�a4!
My opponent creates maximal problems for me to materialize my ad
vantage by playing that move.
19 ... �e4 2 0.1J.b6!? WfbS 21.gel
�d6?
Here, it was my tum to make a mis
take and my position becomes sud
denly dangerous ... I had to continue instead with: 21...�f4! 22.ie3 �f6, preserving a considerable advantage.
22.
gb4!
gc
7?!
It is not better for Black to play here 22 ... iik8?!, because of: 23.gxe6! fxe6 24.ihS+ \!;>f8 2S.�xc4 and his
posi-89 tion remains nearly hopeless... The best chance was 22 ... 1J.fS!?, obtain
ing after: 23.lLlc5 gc7 24.1J.a4+ �f8 a slightly worse, but still quite defen
sible position.
23.�c5?!
White returns the favour ... After:
23.gxe6 ! ! fxe6 24.1J.hS+ �f8 2S.�c5 gxcS 26.1J.xc5, my position would have been tremendously difficult ...
23 ... gxc5 24.ixc5
Now, the move 24.gxe6 is not so dangerous, because Black is not Obliged to enter the variation: 24 ...
fxe6?! 2S.1J.hS+, in which his posi
tion is clearly worse, but he can play instead: 24 ... geS!? with an approxi
mately equal game. The variation:
2S.1J.a4+ \!;>f8 26.gxd6 �xd6 27.gxc4 1J.f6 28.1J.c7 is not dangerous, because of 28 ... �a3! and White has nothing better than: 29.1J.xeS �xcl+ 30.gxc1 1J.xeS 310gbl �g7 32.gxb7, transfer
ring into an equal endgame.
24 ... 0 - 0 25.m
Now, Black has two pawns for the exchange and they are a quite suf
ficient compensation. The prospects are about equal.
25 .. ,!'kS
26.ixd6?!
Here, my opponent overestimated his position and he decided to play for a win relying on his extra exchange.
He had obviously ignored the power of Black's c-pawn ... Instead, he had better give back the exchange with the move 26.l''lxe6, entering after: 26 ...
fxe6 27.ixd6! 'lWxd6 (or 27 ... exd6?
2SJ!xb7+-) 2SJ!xc4 gxc4 29.'lWxc4 a drawish endgame.
26 ... 'lWxd6 27.fucb7 c3
Now, my reliably protected and far
advanced c3-pawn provides me with a stable positional advantage. White's extra exchange is practically immate
rial in that position. In fact, his defence is already very difficult and addition
ally he did not have enough time ...