Is It possible to consistently beat 6 max???

[Sinnister]

I read in a rolf slotboom article that it was impossible to beat shorthanded games in the long run i was wondering if anyone here has success playing those games and if they would be kind enough to make a chart of playable hands from early to late pos. I think this would be one of the most important posts on the forum as shorthanded has room for great profit but not much literature if they are possible to beat consistenly