diff --git a/src/gui/boardview.py b/src/gui/boardview.py
--- a/src/gui/boardview.py
+++ b/src/gui/boardview.py
@@ -58,3 +58,8 @@ class BoardView(ResizableCanvas):
 		y=r*self._cellHeight+self._padding
 		radius=self._cellWidth/2
 		self.create_oval(x-radius,y-radius,x+radius,y+radius,tags=tag,fill=hexCode)
+
+	def _onResize(self,event):
+		super()._onResize(event)
+		self._cellWidth=(self._width-2*self._padding)/18
+		self._cellHeight=(self._height-2*self._padding)/18