Bf4

This “cheapo”, which is actually quite principled, could be the easiest solution to the Grünfeld.

… if it wasn’t for this crazy sacrifice which has to be taken quite seriously, especially since the following analysis by Stockfish hasn’t been tested in practice yet. Nobody wants to risk a forced loss.

If this stuff isn’t your cup of tea, you can also try this line which was actually quite popular at the highest level for a while:

In practice you will most likely have to face this line, which has actually a bit of play left, especially for players with good technique.

Play it safe!