Cash game, Black owns cube. White on roll.

This problem isn’t difficult, but it contains some interesting points. The right play is 21/13. Remaking the midpoint creates a fluid, well-connected position that’s relatively easy to play compared to alternatives. White has chances to make the 3-point, and some other rolls that make the bar-point. He gets some outfield coverage in case Black’s next roll is 6-3 or 6-4. He blocks Black’s best roll, 6-6, turning it from a game-changer into merely a good shot.
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