Why don't you try this opening yourself?

Recently I played some nice games against the Old Benoni Defense, 1 d4 c5 in tournaments. First, a couple of miniatures, and then two over-the-board games.

Zilbermints - burnin-bush (2102 ICC)
Internet Chess Club blitz
Game/3 minutes
17 May 2012

1 d4 c5 2 Nf3 cxd4 3 b4!

This move characterizes the Zilbermints Benoni. It is a hybrid of both the Orangutan, 1 b4, and the Benoni, 1 d4 c5, openings.

3...e5

The Tamarkin Counter Gambit, invented by NM Lawrence Tamarkin  of New York.

4 Nxe5

The only other line is 4 a3. However, the text move begins incredible complications, all of which favor White.

4...Bxb4+ 5 c3!

Sort of similar to the Evans Gambit, where the Queen also comes out on the Queenside.

5...dxc3 6 Qb3 c2+ 

Black could instead try 6...Qe7

7 Qxb4 cxb1=Q 8 Rxb1 9 Qc3

White has plenty of compensation for the pawn. 

9...Na6

In another game against the same opponent the same day, play concluded quickly with 9...Nc6? 10 Nxc6 bxc6 11 Qxg7 Qf6 12 Bb2! 1-0.

10 Ba3 Qe6 11 Nc4 Ne7 12 Nd6+ Kd8 13 e3 Qxa2 14 Ra1 1-0.

Now come the OTB games in serious tournaments.

Zilbermints - Kevin Dresher
Monmouth School and Club tournament
Red Bank, New Jersey
29 April 2012

1 Nf3 c5 2 d4 cxd4 3 b4 Nc6 4 a3 Nf6

Another possibility is 4...e5 5 c3 dxc3 6 Nxc3 with a version of the Smith-Morra Gambit Accepted.

5 Nxd4 Nxd4 6 Qxd4 e6 7 Bb2 Be7 8 e3 b6 9 Nd2 Bb7 10 Be2 00 11 00 Rc8 12 c4 d6 13 Rac1 Qc7

Both sides have developed sensibly. Now the real fun begins.

14 Bf3 Rfd8 15 Bb7 Qb7 16 Rfd1 d5 17 Qf4 dc 18 Nc4 Rd1 19 Rd1 Qc7 20 Qc7 Rc7 21 Rc1 b5 22 Ne5 Rc1 23 Bc1 Ne4 24 Nc6! Bd6 25 Nxa7 Nc3 26 Bb2 Bb8 27 Nc6 Nd1 28 Ba1 Bc7 29 Kf1 Bh2 30 Ke2 Black Resigns

Zilbermints - NM Mark Kernighan (2232 USCF)
Irving Ellner Memorial tournament
Kenilworth, New Jersey
17 May 2012

1 d4 c5

I had hoped my opponent would go into the Blackmar-Diemer, but he obviously did not want to take any chances.

2 Nf3 cxd4 3 b4

Here my opponent thought for 19 minutes before playing his next move. Time control was Game/75 minutes.

3...e6

A conservative approach. As the game unfolds, he seems to think I am playing the Orangutan, 1 b4!. That is not the case, however.

4 a3 Nf6 5 Nxd4 d5 6 e3 e5 7 Nf3 Bd6 8 Bb2 Qe7 9 Be2 00 10 Nbd2 Rd8

Okay, what have we here? Black obviously wants to open up the d-file and start attacking before White has Castled. For his part, White's c-pawn is the only weakness. It is best exchanged via a timely c4 - cxd5 maneuver.

11 Qc1 Bg4 12 c4 Nbd7 13 h3!

With the Nd7 now blocking the square for the Black Queen, White does not have to be afraid of the Qd7 - Bg4 battery.

13...Bf5 14 00 Rac8

15 Qd1 dxc4 16 Nxc4 Bb8 17 Rc1

The only way to challenge Black's dominance of open files. Now if Black plays 17...Nc5, then 18 Ncd2!

17...Ne4 18 Bd3 Bg6 19 Qe2

Now all possible Black cheap tricks have been avoided and the game becomes level.

19...Ng5 20 Bxg6 hxg6 21 Nxg5 Qxg5 22 Rfd1 Nf8 23 Rxd8 Rxd8 24 Rd1 draw