diff --git a/src/image_analyzer.py b/src/image_analyzer.py
--- a/src/image_analyzer.py
+++ b/src/image_analyzer.py
@@ -1,4 +1,5 @@
-import logging
+import logging as log
+from grid import Grid
 from go import Go
 
 
@@ -11,14 +12,15 @@ class ImageAnalyzer:
 		self.tresB=tresB
 		self.tresW=tresW
 
-	def analyze(self,image,sizeCoef,shift):
+	# let's not concern ourselves with sizecoef and shift here anymore. we want corners to come already properly recomputed
+	def analyze(self,image):
 		if self.grid==None: return False
 
 		for r in range(19):
 			for c in range(19):
 				intersection=self.grid.intersections[r][c]
 
-				self.board[r][c]=self.analyzePoint(image,r,c,intersection*sizeCoef+shift,*(self.grid.stoneSizeAt(r,c,sizeCoef)))
+				self.board[r][c]=self.analyzePoint(image,r,c,intersection,*(self.grid.stoneSizeAt(r,c)))
 
 	def analyzePoint(self,image,row,col,imageCoords,stoneWidth,stoneHeight):
 		b=w=e=0
@@ -36,14 +38,14 @@ class ImageAnalyzer:
 				elif 100*I>self.tresW: w+=1
 				else: e+=1
 
-		logging.debug("(%d,%d) ... (b=%d,w=%d,e=%d)", row, col, b, w, e)
+		log.debug("(%d,%d) ... (b=%d,w=%d,e=%d)", row, col, b, w, e)
 
 		if b>=w and b>=e: return Go.BLACK
 		if w>=b and w>=e: return Go.WHITE
 		return Go.EMPTY
 
-	def setGrid(self,grid):
-		self.grid=grid
+	def setGridCorners(self,corners):
+		self.grid=Grid(corners)
 
 
 def relevantRect(imageCoords,stoneWidth,stoneHeight):