1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.0-0 0-0 6.Bxc6 The idea of this variation comes from Aaron Nimzowitsch. After d3 White intends the pawn move f4 together with the opening of the f-line, f5-Nf5 and a king-side attack.
6...dxc6 7.d3 Bd6 8.Bg5?! This line does not follow the Nimzowitsch plan for which the correct consequence of the white plan would be: a) h2-h3 together with g2-g4 and queen knight journey to f5 (e.g. Nc3-Ne2-Ng3-Nf5!) b) The white monarch mostly goes to g2 (/\ Rh1) or to h1 (/\ Rg1). c) After this preparation white will play f2-f4 and create a knigside attack. d) The play very often gets a positional character after exchange of several pieces. [>=8.h3 ]
8...h6 9.Bh4 c5 avoids d3-d4.
10.Nd5? [>=10.Nd2= Together with Nc4-Ne3]
10...g5! Now the trap is sprung
11.Nxf6+ [11.Nxg5 Nxd5!-+ Costs a piece.]
11...Qxf6 12.Bg3 Bg4 13.h3 Bxf3 14.Qxf3 Qxf3 15.gxf3-/+ note! A very instructive classical position. White is in effect playing without a piece. The bishop on g3 is locked up and can free itself only after a pawn sacrifice (e.g. Kg2, Bh2, f4 and after ef4, white plays f3 together with Bg1) to release it but with time and material costs. The correct plan for black to take advantage of the positional advantage is simple: attack on the queen-side, where after creating a space advantage, black can open that wing and have a piece moreB (d6). It is interesting to note that black has a bad bishop (black pawns stand on black squares with the black-colored bishop !!!) but nevertheless white can only save the position if the f2 pawn were missing.
15...f6 16.Kg2 a5 /\a4
17.a4 Kf7 18.Rh1 Ke6 Centralization.
19.h4 Rfb8 The positional exploitation ignores the king-side because nothing can be achieved there. The opening of the h-line is useless. The main theatre is the queen-side.
20.hxg5 hxg5 21.b3 c6 No need to rush! Black comfortably prepares the push b5. [21...b5? 22.axb5 Rxb5 23.Ra4 Rb4 24.Rha1~~ ]
22.Ra2 b5 23.Rha1 c4! The crucial move, after which the d6 bishop breathes.
24.axb5 [24.dxc4 bxc4 25.bxc4 Rb4 together with Rab8,Rc4 -+]
24...cxb3 25.cxb3 [25.Rxa5? Rxa5 26.Rxa5 b2-+ ]
25...Rxb5 The Bg3 and Kg2 are just spectators. They only watch as the black pieces conquer on the queen-side!
26.Ra4 Rxb3 27.d4 Rb5 28.Rc4 Rb4 29.Rxc6 Rxd4 A beautiful game demonstrationg isolation of a piece! 0-1