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Money play. How should Red play 52?
Red can play passively with 11/9, 8/3 or very aggressively with the double tiger, 7/5*, 7/2*.
As quite often happens the aggressive play turns out to be correct. If successful it will buy time for Red to escape his rear checkers. If unsuccessful, then different game plans, such as a back game, come into play.
The passive play is an error but only just.