1. d4. Nf6.... 2. d5!?

this is an opening move that always gets me, although it's rarely played and isn't in any chess opening books i know of. how do u play this move as black? and whats your oppinion on the move

I don't know.  I have never played Nf6 for long.  I probably should start though.  I usually play d5 and go into a Semi-Slav.  I would think about hitting his d5 pawn with a c6 or e6 in the future.

I've never acctually seen that. I'm clueless on what to do. Maybe c6?

hmm yea c6 e6 e5 all seem ok to me but since the move isn't in chess books black should be able to capitalise on this strange move!

Well 2..c6 3.dxc6 Nxc6 seems like a good line for black...

We need some better players than I to unravel this mystrey.

yes! thats what i thought but what about 3... Nc3 or c4, i dont think black will take the pawn

I like ...e6

Of course, reached also by transposition: d4 Nf6 c4 e6 d5?!

In this case, black has a pretty pleasant game. e.g. he can play ...Bb4+ or ...Bc5, castle, and overall has a pretty easy game. The two advantages of d5 for white are cramping of black's queenside knight and space gaining. The thing is, black often tries to get white to play d5, and can respond with a d6/e5 pawn structure, once the f8 bishop is outside of the pawn chain. So, here is my recommendation:

d4 Nf6 d5?! e6 c4 Bb4+ Nc3 Bxc3+ bxc3 d6 e3 e5 which I evaluate as better for black. Of course, white doesn't have to play Nc3.

I guess it could be confusing to a black player (oh my gosh can white just play d5? does this totally bust the ...Nf6 side of the queen's pawn defense?! What the heck??)

hmmm yea wow thanks ozzie, that does seem like a good line to play. thanks for solving the problem!

y not e5 instead of e6? if you are just going to do it anyway?

e5 doesn't put any pressure on the d5 pawn, which is the goal of e6. In a lot of these variations, black doesn't mind taking 2 tempi to go from e7 to e5. Check out some lines of the Bogo-Indian (d4 Nf6 c4 e6 Nf3 Bb4) where black exchanges the "going to be bad" f8 bishop, and then puts his pawns on d6 and e5.

I'd post the explorer variation but I'm a bit busy right now.

Hey! First of all you gotta know that white's moving the same piece again so that can't be good in the opening. Second, if you reaaally hate this position you can play another move instead of Nf6 (d5, e6, c6, c5...). Third, once you arrived to this position you can go for a Benoni with 2...c5 3.c4 e6 or for a Benko Gambit with 2...c5 3.c4 b5 or if you don't like this type of game you can just continue your development (ad. ex. d6-e5-Be7-castle- Nb-d7-a5-Nc5 and so... There are many things that Blanck can play and this 2d5?! doesn't sound good for me.

I'd probably go into a French defense with d6 then e5

french defense is e6 dumby and i might try somthing like c5

Looking at some games on ChessBase's Big database, 2. ... c6 is played most often, 10 games. Seems to have a good winning percentage for Black. The line mostly played is 3. c4 and the critical reply is 3. ... d6 with White scoring only 33%. You need to see if this will help you. The problem seems to be transposing to another opening. Nevertheless, I think White could do better in another opening and Black seems better.

http://www.chess.com/opening/eco/A45_Indian_Game_Pawn_Push_Variation

dwaxe

your link shows that black wins over 70% of the time, who'd a' thought that a little d5 would be that damaging.

I guess that whites whole game ends up a bit over streched playing this move. I've never had it played against me, but I'm no really a nf6 player.

I'd recommend  2...e5.  If he plays c4, you transpose into a declined Budapest, which is equal/slightly better for black.  If he plays Nc3, Bb4 avoids entombing a bishop, and your pieces are active.  If dxe6, fxe6; don't get anything forked by Qh5+, and you're fine.  However, any of e5, c6, e6, etc.  on black's second move should equalize nearly immediately.  

I can't see the direct refutation... I would say it's a fun blitz opening but there aren't traps/awesome aggressive plans/etc.  All it will do is burn some time off of their clock before they equalize on the next move =/ Relatively solid theory dodger?

But the Benoni is refuted, according to Kasparov. I think the idea is to try for black to get at least an equal position, not just to transpose into something else.