I have played a couple of games as black with this line. It is a simple plan: to put presure on the weak c3 and c4 pawns.

This line is mainly known as the Dzindzi-Indian Opening, according to the comments and this video. It. also called the Modern Defense: Pterodactyl, Beefeater Variation according to chess.com.

[FEN ""]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3 5. bxc3 f5

I have tried it while playing correspondance, so I have followed the move sugested by databases: 5. f5. This has had good results after quickly playing Qa5, trying to attack the weak pawns along with other minor pieces.

5...f5 347 2018 2403/2426/2709 30.3% 25.6% 44.1%

5...Qa5 22 2017 2359/2306/2586 50% 22.7% 27.3%

5...e5 5 2014 2370/2338/2418 40% 20% 40%

5...d6 1 2010 Steadman vs. Bosboom 0-1

*Chesstempo database for the position

I wonder what the reason is for taking away a tempo to play f5 while the plan is clear, at least as I play it: to profit from the doubled pawns by attacking on the queenside.

Is f5 played to avoid e4?

  • Hello! Did I accidentally omit anything from your question by editing it? I read your profile, and I’m here to help! – Rewan Demontay May 16 at 18:05
  • @Rewan Demontay No it is ok, same sense. Thank you for making my text more clear and btw giving me the oportunity of learning a bit of english wich I like to do. – Universal_learner May 16 at 18:12
  • Alrighty. You’re very welcome, and I’m just making sure! – Rewan Demontay May 16 at 18:13
  • 1
    Ahhh ok. I see now. – Rewan Demontay May 16 at 19:05
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    @Universal_learner Beefeater is the ECO name, but Dzindzi-Indian is the name this variation is called normally. It's the same thing. Here's an Introduction video explaining this. f5 is mandatory to make e4 a bit more expensive for White (it's still a good move). – fuxia May 16 at 19:24

You don't want a White pawn getting to e5, especially with a friend at f4. White can let you have a c-pawn if he can achieve such a central dominance.

Also, without f5 it is awkward to develop the Ng8 -- you notice none of the variations you show have Nf6. But now after f5, Nf6 will grip the e4 square. Thus White often plays e4 anyway!


By playing ...f5 you're trying to weaken the e4 push. This is the most important immediate thing to attend to. It's not like White's doubled pawns are going to run away anytime soon.

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