Money Play. How should Red play 33?
The simple truth of this position is that Red cannot to have more than one loose blot at a time when White has a strong board. On his next turn White will attack the Red blot on his 3-pt if he possibly can.
Red needs to strengthen his own board to prepare for that forthcoming attack.
That leaves him with but one choice – bar/22, 8/5(3).Any other move is an outright blunder.