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Benoni Defense: let White push d5 for an unbalanced fight

Black plays c5 to make White push d5, getting a queenside pawn majority and active pieces in return. A very fighting defense.

Also called：Benoni Defense、Benoni Defence、Modern Benoni、Benko Gambit

The Benoni Defense is 1. d4 Nf6 2. c4 c5 3. d5. On move two Black hits d4 with the c-pawn, and White pushes on to d5 to grab space. From here on the pawn structures are completely unbalanced, and it often becomes a fight where each side attacks on its own wing. If you want a lively game when you play free chess, it's a great fit.

Moves and position

The first three moves already decide what the position looks like:

  1. 1. d4 Nf6 White takes the center, and the black knight watches e4.
  2. 2. c4 c5 Instead of e6 or g6, Black hits d4 right away with the c-pawn.
  3. 3. d5 White doesn't trade. The d-pawn pushes on and takes space in Black's half of the board.

The d5 pawn cramps Black, but it is also far from home. Black can hit it next with e6, or simply open fire from the other side with b5.

What White wants

  • A central pawn majority: White often has an extra pawn in the center, and the big goal is to push e5 and tear Black's position open.
  • More space: The d5 pawn cramps Black, so Black's pieces are a bit squeezed.
  • Keep e4 protected: Black's knight and rook often gang up on e4, so White always has to watch this pawn.

What Black wants

  • A queenside pawn majority: Black has an extra pawn on the queenside, and the goal is to push b5 and open things up there.
  • The long diagonal: The bishop goes to g7 and watches the center and White's queenside from afar.
  • Press on e4: A rook on e8 and a knight on f6 team up against e4, making it hard for White to push e5.

Main lines

Modern Benoni: 3... e6

Black trades off White's c-pawn with e6, puts the bishop on g7 and the rook on e8 to press on e4. White protects e4 with Nd2.

This is the main Benoni picture. After the trade, White has two center pawns on d5 and e4, and Black has an extra pawn on the queenside. Black's rook on e8 eyes e4, so White plays Nd2 to protect it, while also getting ready to jump the knight to c4 and attack Black's d6.

Benko Gambit: 3... b5

Black gives up a pawn and gets two open files, the a-file and the b-file, and the bishop lands on a6.

Black gives up a pawn on purpose to open the a- and b-files, then puts rooks on them and, together with the g7 bishop, presses White's queenside all game long. Black is a pawn down, but the pressure often lasts a long time, even into the endgame. Many players who like long-term initiative love it.

Taimanov Attack: 7. f4 Bg7 8. Bb5+

White pushes f4 to prepare e5, then gives a bishop check to upset Black's development.

This is one of White's most aggressive lines. The f- and e-pawns get ready to charge together, and Bb5+ makes Black's knight drop back to d7, so the knight that was watching e4 has left f6. Black must be very careful, or once e5 comes, it's very hard to stop.

A common trap: forgetting to guard e4

In the Modern Benoni, once the black rook is on e8, the e4 pawn is attacked by both the f6 knight and the e8 rook but protected only by the c3 knight. If White forgets this and plays some other move:

The black knight takes e4, the white knight takes back, and the black rook takes the white knight. Two attackers, one defender: White is a pawn down.

Just count: two attackers (knight and rook), only one defender (the c3 knight). After the trades, Black is a pawn up, and White's center is gone too.

What White should do: play 10. Nd2 first so the knight adds another guard on e4, or play Qc2. Remember: when your opponent's rook and knight both target a pawn, count whether you have enough defenders.

Who it suits

  • Black players who want to play actively: The Benoni is unbalanced from the start and rarely turns into a dull draw.
  • Players who don't mind a little risk: Black gives White space and has to make up for it with activity.
  • Players who like long-term pressure: Try the Benko Gambit: give a pawn, get the initiative for the whole game.

It's very similar to the King's Indian Defense: the bishop goes to g7 and d6 is played in both. The difference is that the Benoni hits with c5 from the start, so the position becomes unbalanced sooner.

FAQ

Are the Benoni and the Benko Gambit the same opening?

The first three moves are the same: 1. d4 Nf6 2. c4 c5 3. d5. After that, e6 gives the Modern Benoni and b5 gives the Benko Gambit. One trades pawns in the center, the other gives a pawn on the queenside. The ideas are very different, but both belong to the big Benoni family.

Can Black play e5 on move three?

Yes. 1. d4 Nf6 2. c4 c5 3. d5 e5 is called the Czech Benoni. Black locks the center up tight, the position gets very closed, and both sides have to maneuver slowly. It's more solid than the Modern Benoni, but also more passive.

How can White avoid the Benoni?

Don't push d5 on move three. Play 3. Nf3 instead, or take the c5 pawn with dxc5, and the game turns into a different opening. Still, pushing d5 to gain space is the most natural move, and most people play it.

Try it yourself

Use the button below to start a game against the computer from the Benoni Defense. With Black, keep an eye on e4 and look for a chance to push b5. For other openings, go back to the openings guide. For something different, head back to the chess against the computer home page.

Play this opening against the computer

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