The Corus 2009 Bayonet games are the focus of attention for this update. But, to begin with, as some other lines should also be presented, I will use the possibility to annotate one of my own KID games.
After 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bd3 0-0 6.Nge2 c5 7.d5 e6 8.h3 exd5 9.exd5 Nfd7:
10.f4 as in Topalov-Radjabov, Linares 2006 seems to be thematic. After 10.0-0 Ne5 Black is OK, Vovk - Golubev.
The Classical: 7.0-0 Na6 8.Be3 (7.Be3 Na6 8.0-0)
And here is a game by my great predecessor at ChessPublishing, Victor Mikhalevski, which started 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 0-0 6.Nf3 e5 7.0-0 Na6 8.Be3 Ng4 9.Bg5 Qe8 10.c5!?:
10...exd4 11.Nd5 Qxe4 12.Ne7+ Kh8 13.Bc4!? Did Victor forget his own analysis? (Not an impossible thing, as all us chess annotators know). Or maybe he prepared something new? One way or another, see Mikhalevski - Bennett.
The Bayonet Attack
Now to the main point, 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.b4:
With three alternatives:
9...a5 10.bxa5 Rxa5 11.a4 and here I do not like 11...b6 for Black, see Carlsen - Socko. But it is remarkable that Carlsen played 10.bxa5 and not 10.Ba3, which is known to be the main move.
9...Ne8!?. To some extent, I advocated this line in recent years:
So, before it is finally refuted, here is some food for thought:
10.a4!? f5 11.a5 - Ivanchuk - Radjabov.
10.a4 f5 11.Nd2 - Werle - Vallejo.
10.Nd2 f5 11.c5 Nf6 - Ulibin - Ramakrishna (the actual move order was 9.Nd2 Nd7 10.b4 f5 11.c5 Nf6 - yes, the line can be used against 9.Nd2 as well.)
9...Nh5 (still the main move) 10.Re1 f5 11.Ng5 Nf6 (thematic, but really hard to prepare for Black) 12.f3 Kh8 13.Rb1!?. The Van Wely-Radjabov saga continued at Corus with this Ruslan Ponomariov move. No, it does not win by force!
Finally, 9...Nh5 10.Re1 f5 11.Ng5 Nf6 12.f3 Kh8 13.Ne6 (Van Wely's 'old' move) 13...Bxe6 14.dxe6 Re8!? is a novelty from Grischuk - Radjabov, December:
As of now, I will allow the white players to look for a refutation of Radjabov's home prep themselves!
Till next month, Mikhail