If generating left to right, it seems to me the condition almost always hold that both the number of empty cells and filled cells to the immediate left and to t

If generating left to right, it seems to me the condition almost always hold that both the number of empty cells and filled cells to the immediate left and to the lower left, directly underneath, and lower right (four known neighbors at the time of generation) is always equal to two, except occasionally you get three filled, but never four, which would create a thick wall. I’m not sure about the left edges, those would only have two known neighbors (directly underneath and lower right)Al So maybe with a good intial rowthat’s all you need to do.