(1) Nisipeanu,Liviu Dieter (2661) - Reinderman,Dimitri (2576) [B04]
EU-ch 11th Rijeka (3), 08.03.2010
[Marin]

Starting with CBM 132, I have been writing a series of articles dedicated to the Alekhine Defence. Being used to defend this type of positions from my large experience as a Pirc player, my focus has generally been from Black's point of view, in the way that I tried to prove the positions being playable. However, I did not try to ignore the dangers and practical problems; on the contrary, I have unearthed some that were not known before, in order to provide the reader (and myself), with an accurate general view. Using the engines is tricky in this kind of positions. Engines sometimes are optimistic in bad positions, just because of the material balance and sometimes pessimistic, because of Black's lack of space. In the following game, White used a rare line and Black reacted in a way that had received an "?!" in my comments from the first article.

1.e4 Sf6 2.e5 Sd5 3.d4 d6 4.Sf3 g6 5.Lc4 Sb6 6.Lb3 Lg7 7.Sg5 e6 8.Df3 0-0 9.Dh3 h6 10.Sf3 dxe5 11.dxe5 Sc6 12.Lxh6 Sxe5 13.Sg5!?
This is not too popular, but is not easy to meet. [13.Sxe5 Lxe5 14.Sc3 is the main line, with an acceptable position for Black.]

13...Sd3+
"A tempting continuation, warmly recommended by the computer." [My conclusion was, that the only playable move is the untested yet centralizing 13...Dd4 , although things are far from clear in this line, Black is alive and kicking.]

14.cxd3 Lxb2 15.Sd2 Lxa1 16.0-0
I ended my line here with the following comment: "Despite his extra-pawn and better structure, Black is in serious trouble. He cannot find a stable square for his bishop along the whole diagonal, which will provide White with several tempi for developing his attack."

16...Ld4 17.Sde4!?
Creating the well-masked threat of Bg7!, which did not work immediately because the f6-square was available for the king. [I remember that during my attempts to make this position holdable for Black I was mainly afraid of 17.Sdf3 , when Black has no useful move at his disposal. For instance, 17...Te8?! is met by 18.Sxf7 Kxf7 19.Lg5 with strong attack. For the purpose of this form of attack, the knight is more useful on f3 than on e4, because it keeps the d4-bishp attacked and could jump to e5 if the bishop gets under a self pin (Qh7+, ...Bg7).]

17...Te8
The only move.

18.Sxf7



18...Dd7?
At first sight, it is not easy to prove a forced win for White after the acceptance of the sacrifice. When playing the text move, Black must have overlooked or underestimated his opponent's answer.

19.Le3!
White has a winning attack.

19...Kxf7 20.Dh7+ Lg7 21.Sg5+ Kf6 22.Se4+ Kf7 23.Sg5+ Kf6 24.Sf3 Dd6 25.Lg5+ Kf7 26.Lh6 Df8 27.Se5+ Kf6 28.Dxg6+ Ke7 29.Lxg7 Df5 30.Dh6 Sd5 31.g4 1-0