Sphere On CheckerBoard is no problem as no antigravity is needed. Sphere Over CheckerBoard however ends up with the same problem as the sphere over water. the sphere will drop.
And just for telling you this i'll be kicked outta bryce 7 betatesting for breaking NDA, just like skiwillgee.

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(")(")This is Bunny. Copy and paste bunny into your signature to help him gain world domination.