♡ 59 ( +1 | -1 ) I actually researched this not too long ago. I can't find the source or remember the analysis, but I think 3. Nf3 and white should be fine. With other moves, black plays 3...e5 and gets an ok game, with the knights actually appearing to tango together. It seems that black will often play moves like ...e6 and ...d6 to create room for the knights to relocate and free the bishops (though he wants to play ...e5 at some point).
After 3.d5, we have 3...Ne5 followed by ...Ng6, like a mirror image of the Alekhine's Defense. The opening is probably not bad overall if you enjoy cramped, hypermodern positions.
♡ 50 ( +1 | -1 ) Io do agree...with ganstaman. 3. Nf3 is a good move for white: if followed by 4. Nc3 Bb4 we are in a Nimzowitsch Indian variant which is slightly better for white, if 4. ... d5 is also good for white since the knight on c6 is not placed so well. With any other move, white can do 5. e4 gaining che control of the center (and, again, the knight in c6 is an obstacle for c5). I think this is a safe way for white to obtain a good position, other ways can be not so clear, like 3. d5 or allowing black to do 3. ... e5.