Hello.
thojan wrote on 05/13/22 at 17:38:12:
I'm using Jones' new books to switch back to the KID. I'm a little confused about Jones' pet line with Nbd7. It looks interesting and avoids some of my old lines, which I don't like too much. But which lines does it actually replace?
6...Nbd7 (or 6...e5 and 7...Nbd7) is a complementary recommendation. The main recommendation is still 6...e5 and if 7.0-0 Nc6.
thojan wrote on 05/13/22 at 17:38:12:
He writes that it replaces the Mar del Plata and that by playing 6. ... Nbd7, "we bypass various set-ups including the dull Exchange Variation". What are these "various set-ups"?
I would think he means things that can happen between
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5
and
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
so...
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.dxe5
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.dxe5
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.Be3
or even...
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 8.Bg5
because
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Nbd7 7.0-0 e5 8.d5 Nc5
Is unlikely to go into this line.
thojan wrote on 05/13/22 at 17:38:12:
In the Makogonov and Saemisch, white deviates on move 6. So, these seem still possible.
What about the Petrosian and the Gligoric? In both of them, black plays 6. ... e5. Can I ignore them, if I learn the 6. ... Nbd7 lines?
With 6...Nbd7 move order:
Gligoric will not really be avoidable for black.
Petrosian I guess you avoid the line above at least.
With any move order:
Fianchetto doesn't seem super avoidable.
If you go 1.d4 d6 and prepare either 1.d4 d6 2.c4 e5 or 1.d4 d6 2.e4 Nf6 you should be able to avoid the Saemisch though. Black can also go for some early e5 in many lines e.g. 1.d4 d6 2.e4 g6 3.c4 e5. Apart from doing some other stuff though, white can go 4.Ne2 (or 4.Nc3 Bg7 5.Ne2) and still aim for f3. It becomes a Saemisch versus black who has played early e5 and has a little bit more flexibility than usual.
Have a nice day.