Bonzo Benoni
Chess Theory Table

1 d4 c5 2 d5^(a) d6

	3	4	5	6	7	8	9	10	11	Evaluation
	Schmid Benoni Hempeater Variation
1	Nc3 g6	e4 Bg7	Nf3 Bc3!?	bc3 Nf6	Bb5 Bd7	Bd3 Bg4	0-0 Nbd7			=
	Three Pawn Attack Variation
2	e4 g6	f4 Bg7	Nf3 e6!	c4 ed5	cd5^(b) Ne7	Nc3 0-0	Be2 Bg4	0-0 Nd7		=
	Four Pawn Attack Variation
3	c4 g6	e4 Bg7	f4 f5!?	ef5 Bf5	Bd3 Qa5	Bd2 Qb6	Bf5 Qb2	Bc8 a5		∞
	Kings Indian Hempeater Variation
4	... ...	... ...	Nc3 Bc3	bc3 Qa5	Qb3 Nf6	Bd3 Nbd7	Nf3 Ng4	0-0 0-0	Be2 f6	∞
	Anti-Hempeater Variation
5			Nf3 Nd7	Qc2 Ne5	Nbd2 Nf3	Nf3 Bg4	Be2 Nf6	0-0 0-0	Be3 Nd7	=
	a) 2 dxc5 e6 is easy equality. White should avoid the trap 3 b4? a5 4 c3 axb4 5 cxb4 Qf6. b) 7 ed5 Ne7 8 Nc3 0-0 9 Bd3 Re8= is a solid alternative.

White: Akiba Rubinstein • Black: Rudolf Spielmann
Bad Pistyan 1912 A43 Old Benoni Defense

Notes by Dr. Savielly Tartakower.
The building up of an attack by the second player - especially in an opening both peculiar and difficult to handle - is a special art. We shall be able to follow some its guiding principles here.

1 d4 c5
2 d5 d6
3 c4 g6
4 e4 Bg7
5 Bd3 e6

It will be noticed that Black carefully refrains from blocking the long diagonal either by 5 ... e5 or, even temporarily, by ; 5 ... Nf6.

6 Nc3 Ne7
7 Nge2

Here 7 f4 , followed by Nf3, leads to more straightforward development.

7 ... exd5
8 exd5 Nd7
9 f4 Nf6
10 Ng3 h5

Sounding the general attack.

11 O-O h4
12 Nge4 Nxe4
13 Bxe4 Bd4+

14 Kh1 Nf5

Black's attack has quickly assumed a concrete form. The text move announces the well-known attack by 15...Ng3+.

15 Bxf5 Bxf5
16 Re1+ Kf8
17 Qf3

White seeks to avoid fresh weaknesses; e.g., if 17 Be3 Bxc3 18 bxc3 h3 19 g3 Be4+ 20 Kg1 f5 or (20 ... Bg2 , and White's position remains restricted. )

17 ... h3
18 g3

Evidently not 18 g4?? Qh4

18 ... Qd7
19 Bd2 Bg4
20 Qf1 Qf5
21 Rac1 Kg7
22 Be3 Bf6
23 b3 Rhe8
24 Bf2 Bf3+
25 Kg1 Bg2
26 Rxe8 Bxf1
27 Rxa8 Qd3
28 Re8 Qf3
29 Kxf1 Qh1+
30 Bg1 Qg2+
31 Ke1 Qxg1+
32 Kd2 Qxh2+ 0-1

For if 33 Ne2 Qg2 34 Rg1 Qxg1! 35 Nxg1 h2 0-1 , etc.

Bonzo Benoni Chess Theory Table

Bonzo Benoni
Chess Theory Table