law inv_chord
import minebender-game@1.0.0.0/proof_inv.bend as ProofInvimport Base
import minebender-game@1.0.0.0/types.bend as T
import minebender-game@1.0.0.0/game.bend as G
759law inv_chord:
760 for +w: Nat
761 for +h: Nat
762 for +layout: T.Grid(Bool)
763 for +ts: List<&2, T.Pos>
764 for +g: G.Game
765 for inv: Inv(w, h, layout, g)
766 Inv(w, h, layout, G.chord_play(ts, g))