// Checks to see if the board is still playable
// should be called after render
public bool playable()
{
for (int row = 1; row < 9; row++)
{
for (int element = 1; element < 9; element++)
{
Tile tile = rows[row][element];
if (tile.isAnEmpty())
{
EmptySpace empty = (EmptySpace)tile;
if (empty.isMarked())
{
return(true);
}
}
}
}
return(false);
}
