Which Objective First?

We can build our prime, improve our inner board, or run our back checker. When we have several options, it's often best to do the hardest one first. White's gappy prime and lack of ammunition means we don't need to run right now. We can do that relatively easily later on.

Making our bar point would be best to contain white's back checkers, and that 2 looks very nice to unstack the 8pt. But then the 5 would put a second checker on the 4pt - surely too high a price to pay.

Which leaves improving our board with 7/2 4/2. Not only do we safety a blot, but we utilise that spare checker on the 4pt. It's dying to be useful, the only place it can be useful is on the 2pt, and the only way that will happen is if we roll a 2. So take the opportunity now! It's the right move by a mile.