theorem :: GOBOARD6:79

for G being Go-board st 1 < width G & 1 < len G holds
LSeg (((G * (1,(width G))) + |[(- 1),1]|),(((1 / 2) * ((G * (1,(width G))) + (G * (2,(width G))))) + |[0,1]|)) c= ((Int (cell (G,0,(width G)))) \/ (Int (cell (G,1,(width G))))) \/ {((G * (1,(width G))) + |[0,1]|)}