What if White had cut at 76 (1 here)?
If White cuts, the ladder is bad for Black.
So, what's the best move for black in this situation?
--FCS
Black shouldn't try to play out the ladder. If White tries to connect with 5, Black blocks at 6. The three white stones will struggle. --MortenPahle
After Black 6 there's nothing left to do for White. --ArnoHollosi