Ben Reiniger wrote on Wed, Dec 13, 2017 05:54 PM UTC:
This idea has surfaced before. I remember it from Prince, the Base and its relatives. The more general idea that "a rook blocks lines (from king passage) in 2D" should generalize to "a rook(ish thing) should block planes (from king passage) in 3D" has come up more often, not always with the blocking criterion now being discussed.
This idea has surfaced before. I remember it from Prince, the Base and its relatives. The more general idea that "a rook blocks lines (from king passage) in 2D" should generalize to "a rook(ish thing) should block planes (from king passage) in 3D" has come up more often, not always with the blocking criterion now being discussed.