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Money Play. How should Red play 42?
11/5 looks nice and it is safe, but it is also a blunder.
There are too many White checkers in the attack zone for Red to split comfortably, although 24/20, 13/11 is the second-best play.
The top play is 8/4, 6/4 leaving a fluid and dynamic position. Red is behind in the race so being hit on his 11-pt may help him rather than hinder him.
13/9, 11/9 is a bad mistake. As usual, taking a solid inner board asset is better than the outer board point.
Making the 4-pt is not obvious but once you see it, its merits become obvious.