Currently the board grid is getting drawn in the background. Everything else is drawn on top of it. So when cell highlights are drawn, they hide the grid lines.
One solution would be to have the grid as a separate image to draw on top of the highlights.
Currently the board grid is getting drawn in the background. Everything else is drawn on top of it. So when cell highlights are drawn, they hide the grid lines.
One solution would be to have the grid as a separate image to draw on top of the highlights.