Puzzles

Question 1

How to get grid reference from index in an array?

Answer 1

Column = (index % GridSize) + 1

Row = GridSize - ( index/GridSize )

Question 2

How can you empty a cell e.g., make a blocked cell a normal cell?

Answer 2

Copy the line from GetCell() method !!!

Grid[(GridSize - Row) * GridSize + Column - 1] = new Cell();