diff --git a/src/image_analyzer.py b/src/image_analyzer.py
--- a/src/image_analyzer.py
+++ b/src/image_analyzer.py
@@ -1,5 +1,5 @@
 import logging
-from go import *
+from go import Go
 
 
 class ImageAnalyzer:
@@ -23,7 +23,7 @@ class ImageAnalyzer:
 	def analyzePoint(self,image,row,col,imageCoords,stoneWidth,stoneHeight):
 		b=w=e=0
 
-		((x1,y1),(x2,y2))=self.relevantRect(imageCoords,stoneWidth,stoneHeight)
+		((x1,y1),(x2,y2))=relevantRect(imageCoords,stoneWidth,stoneHeight)
 
 		for y in range(y1,y2+1):
 			for x in range(x1,x2+1):
@@ -42,13 +42,14 @@ class ImageAnalyzer:
 		if w>=b and w>=e: return Go.WHITE
 		return Go.EMPTY
 
-	def relevantRect(self,imageCoords,stoneWidth,stoneHeight):
-		x=int(imageCoords.x)
-		y=int(imageCoords.y)
-		xmax=max(int(stoneWidth*2//7), 2) # !! optimal parameters subject to further research
-		ymax=max(int(stoneHeight*2//7), 2)
-
-		return ((x-xmax,y-ymax), (x+xmax,y+ymax))
-
 	def setGrid(self,grid):
 		self.grid=grid
+
+
+def relevantRect(imageCoords,stoneWidth,stoneHeight):
+	x=int(imageCoords.x)
+	y=int(imageCoords.y)
+	xmax=max(int(stoneWidth*2//7), 2) # !! optimal parameters subject to further research
+	ymax=max(int(stoneHeight*2//7), 2)
+
+	return ((x-xmax,y-ymax), (x+xmax,y+ymax))