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Unlimited Games. How should Red play 63?
The choices are 8/5, 8/2 and 8/2, 5/2. Very surprisingly the latter turns out to be a blunder!
The problem is that holding the 2-pt and the 8-pt together is not good (they can’t both be part of the same prime) and after all, the 5-pt is the 5-pt. While Red holds White’s bar-point as an escape route if hit the risk of playing 8/5, 8/2 is not that high and so the reward is well worth the risk.