law closed_explode

minebender-game@1.0.0.0 · proof_inv.bend:254

import Base
import minebender-game@1.0.0.0/types.bend as T
import minebender-game@1.0.0.0/board.bend as B

254law closed_explode:
255  for +w: Nat
256  for +h: Nat
257  for +layout: T.Grid(Bool)
258  for +shown: T.Grid(Bool)
259  for +p: T.Pos
260  for +mp: {B.mine(layout, p) == True{} : Bool}
261  for +cl: {closed(w, h, layout, shown) == True{} : Bool}
262  {closed(w, h, layout, B.set_at(Bool, shown, p, True{})) == True{} : Bool}