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Money Play. How should Red play 33?
Red cannot play passively here so 13/7, 6/3(2) just gives White the freedom the board.
Red must try to mobilise his rear checkers and that is best done with 24/21, 23/20. To protect those blots a little Red should play 7/1, strengthening his board, rather than 13/7.
The idea behind this play is that if White points on one of the Red blots then hopefully he can make an anchor using the other one. It won’t always work, but Red will win about one third of the games after his best play.
All plays, other than 24/21, 23/20, 7/1 are bad errors or blunders.