For black pieces, the PST is accessed via a mirror table (sq@mirror@N) that flips the board vertically, so the same white-perspective tables work for both sides.
fc.property(arbitraries.tree as fc.Arbitrary, (tree) = {
，详情可参考新收录的资料
Летящий из России во Вьетнам самолет подал сигнал бедствия20:53
steps = builtins.genericClosure {
Email: [email protected]