Chess Opening Theory/1. d4/1...Nf6/2. c4/2...e6/3. Nc3/3...Bb4/4. a3

From Wikibooks, open books for an open world
< Chess Opening Theory‎ | 1. d4‎ | 1...Nf6‎ | 2. c4‎ | 2...e6‎ | 3. Nc3‎ | 3...Bb4
Jump to: navigation, search
Sämisch Variation
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

rnbqk2r/pppp1ppp/4pn2/8/1bPP4/P1N5/1P2PPPP/R1BQKBNR

Moves: 1.d4 Nf6 2. c4 e6 3. Nc3 Bb4 4.a3
ECO code: E24-E29
Parent: Nimzo-Indian Defence

Nimzo-Indian Defence, Sämisch Variation[edit]

Sämisch Variation[edit]

With 4.a3, the Sämisch named after the German Grandmaster Friedrich Sämisch, White immediately questions the placement of the bishop. This has the benefit of seizing the bishop pair early (if Black takes the knight), and resolving central tension. White will play for an eventual e4 push after f3.

Taking the Knight is pretty much an automatic response at master level as the alternative lose a tempo or lose a piece.

4...Bxc3+ inflict the doubled pawns on White.
4...Ba5?? Maintaining the pin is an error as it just loses the bishop after 5.b4 Bb6 6.c5.
Playing 4...Be7?! is better, but it defeats the point of the Nimzo-Indian since White gets to play 5.e4 for free. (The point of the 3...Bb4 pin was to prevent White from doing this easily.)

Theory table[edit]

For explanation of theory tables see theory table and for notation see algebraic notation

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4.a3

4 5 6
a3
Bxc3+
bxc3
O-O
e3
c5
=
...
Be7?!
e4

+/=
...
Ba5??
b4
Bb6
c5

+/-

When contributing to this Wikibook, please follow the Conventions for organization.

References[edit]

  • Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
  • Batsford Chess Openings 2 (1989, 1994). Garry Kasparov, Raymond Keene. ISBN 0-8050-3409-9.