law contains_cons_self
import minebender-game@1.0.0.0/proof_grid.bend as ProofGridimport Base
import minebender-game@1.0.0.0/types.bend as T
import minebender-game@1.0.0.0/board.bend as B
219law contains_cons_self:
220 for +p: T.Pos
221 for +xs: List<&2, T.Pos>
222 {B.contains(p <> xs, p) == True{} : Bool}