diff --git a/diana.py b/diana.py
new file mode 100644
--- /dev/null
+++ b/diana.py
@@ -0,0 +1,199 @@
+import sys
+import re
+import go
+import os
+import sgf
+
+if len(sys.argv)>1:
+  files=sys.argv[1:]
+else:
+  sys.exit("no input file specified")
+
+movesPerDiagram=50
+minMovesPerDiagram=10
+
+t=sys.stdout
+c=28
+padding=15
+highNumbers=False
+
+class Svg:
+  content=""
+  footer=""
+
+  padding=15
+  gridSize=28
+  highNumbers=False
+  
+  def __init__(self):
+    self.content='''<?xml version="1.0" standalone="no"?>
+<svg width="{0}" height="{0}" version="1.1" xmlns="http://www.w3.org/2000/svg" alignment-baseline="center">
+  <defs>
+    <style type="text/css"><![CDATA[
+    text{{font-family:"DejaVu Sans";text-anchor:middle;}}
+    line{{stroke:black;stroke-width:0.7}}
+    circle{{stroke:black}}
+    .b{{fill:black}}
+    .w{{fill:white}}
+    ]]></style>
+  </defs>
+  <rect width="{0}" height="{0}" x="0" y="0" style="fill:white;stroke:white"/>\n'''.format(2*self.padding+18*self.gridSize)
+    self.footer="</svg>\n"
+
+    grid='  <line x1="{0}" x2="{1}" y1="{2}" y2="{3}" />\n'
+
+    # okraje desky
+    for i in (0,18):
+      self.content+='  <line x1="{0}" x2="{1}" y1="{2}" y2="{3}" style="stroke-width:1"/>\n'.format(self.padding, 18*self.gridSize+self.padding, self.gridSize*i+self.padding, self.gridSize*i+self.padding)
+      self.content+='  <line x1="{0}" x2="{1}" y1="{2}" y2="{3}" style="stroke-width:1"/>\n'.format(self.gridSize*i+self.padding, self.gridSize*i+self.padding, self.padding, 18*self.gridSize+self.padding)
+    
+    # mřížka
+    for i in range(1,18):
+      self.content+=grid.format(padding, 18*c+padding, c*i+padding, c*i+padding)
+      self.content+=grid.format(c*i+padding, c*i+padding, padding, 18*c+padding)
+
+    # hvězdy
+    for i in range(3):
+      for j in range(3):
+        self.content+='  <circle cx="{0}" cy="{1}" r="{2}" class="b"/>\n'.format(padding+3*c+6*i*c, padding+3*c+6*j*c, 2)
+  
+  def __str__(self):
+    return self.content+self.footer
+          
+  def drawStone(self,x,y,color):
+    self.content+='  <circle cx="{0}" cy="{1}" r="{2}" class="{3}" />\n'.format(padding+x*c, padding+y*c, c/2-1, color)
+
+  def getFontSize(self,text):
+    if len(text)<2: return round(0.7*c)
+    elif len(text)<3: return round(0.55*c)
+    else: return round(0.4*c)
+
+  def writeLabel(self,x,y,label,color):
+    label=str(label)
+    fontSize=self.getFontSize(label)
+    self.content+='  <text x="{0}" y="{1}" class="{2}" font-size="{3}">{4}</text>\n'.format(padding+x*c, padding+y*c+0.35*fontSize, color, fontSize, label)
+    
+  def drawMove(self,x,y,label,color):
+    labelColor="w" if color=="b" else "b"
+    
+    if (not self.highNumbers) and isinstance(label,int) and label%100!=0: label=label%100 # dost neobratná logika
+    
+    self.drawStone(x,y,color)
+    self.writeLabel(x,y,label,labelColor)
+    
+  def getContent(self):
+    return self.content+self.footer
+
+
+class Tikz:
+  content=""
+  footer=""
+  
+  highNumbers=False
+  
+  def __init__(self):
+    self.content='''\\begin{tikzpicture}
+  \\draw[step=\\boardSquare,gray,very thin] (0,0) grid (18\\boardSquare,18\\boardSquare);
+  \\draw (0,0) rectangle (18\\boardSquare,18\\boardSquare);\n\n'''
+    
+    # hvězdy
+    for i in range(3):
+      for j in range(3):
+        self.content+='  \\filldraw[fill=black] ({0}\\boardSquare,{1}\\boardSquare) circle[radius=0.04];\n'.format(6*i+3, 6*j+3)
+      self.content+='\n'
+  
+    self.footer='\\end{tikzpicture}\n'
+      
+  def __str__(self):
+    return self.content+self.footer
+
+  def drawStone(self,x,y,color):
+    fill="black" if color=="b" else "white"
+    self.content+='  \\filldraw[draw=black,fill={0}] ({1}\\boardSquare,{2}\\boardSquare) circle[radius=0.5\\boardSquare];\n'.format(fill,x,18-y)
+  
+  def drawMove(self,x,y,label,color):
+    fill="black" if color=="b" else "white"
+    labelColor="white" if color=="b" else "black"
+    if (not self.highNumbers) and isinstance(label,int) and label%100!=0: label=label%100 # dost neobratná logika
+    
+    self.content+='  \\filldraw[draw=black,fill={0}] ({1}\\boardSquare,{2}\\boardSquare) circle[radius=0.5\\boardSquare] node[color={3}]{{{4}}};\n'.format(fill,x,18-y,labelColor,label)
+    
+  def getContent(self):
+    return self.content+self.footer
+
+
+def processFile(fileName):
+  shortName="".join(fileName.split('/')[-1].split('.')[:-1])
+  
+  game=go.Go()
+  global t
+  
+  record=sgf.Sgf(open(fileName,'r',encoding="utf-8").read())
+  moves=record.getMoves()
+
+  localBoard=dict()
+  overlays=""
+  letters=dict()
+  letter='a'
+
+  diagramsNeeded=(len(moves)-minMovesPerDiagram)//movesPerDiagram+1
+  moveNumber=0
+  
+  for i in range(diagramsNeeded):
+    # inicializuj diagram
+    diagram=Tikz()
+    
+    for lineNumber,line in enumerate(game.board):
+      for itemNumber,item in enumerate(line):
+        if item==1: diagram.drawStone(itemNumber,lineNumber,"b")
+        if item==-1: diagram.drawStone(itemNumber,lineNumber,"w")
+      localBoard={(a,b):game.board[b][a]-1 for a in range(19) for b in range(19) if game.board[b][a]!=0}
+    
+    for j in range(movesPerDiagram):
+      # kresli tahy
+      if moveNumber>=len(moves): break
+      
+      c,(x,y)=moves[moveNumber]
+      c=c.lower()
+      
+      if not game.move(1 if c=='b' else -1,x,y):
+        print("illegal move: {0} at {1},{2}".format(moveNumber+1,x,y))
+        moveNumber+=1
+        continue
+      
+      # zapíšu tah na volný průsečík
+      if not (x,y) in localBoard:
+        localBoard[(x,y)]=moveNumber+1
+        diagram.drawMove(x,y,moveNumber+1,c)
+      # průsečík je obsazený nepopsaným kamenem
+      elif localBoard[(x,y)]<1:
+        # průsečík není popsaný ani písmenem
+        if not (x,y) in letters:
+          letters[(x,y)]=letter
+          color='b' if localBoard[(x,y)]==0 else 'w'
+          diagram.drawMove(x,y,letter,color)
+          letter=chr(ord(letter)+1)
+        overlays+="{0} = {1}\n".format(moveNumber+1,letters[(x,y)])
+      # průsečík je obsazený očíslovaným kamenem
+      else: overlays+="{0} = {1}\n".format(moveNumber+1,localBoard[(x,y)])
+      
+      moveNumber+=1
+      
+    # dokonči a ulož diagram
+    t=open("out/{0}-{1}.tex".format(shortName,i+1),'w') # nový soubor
+    t.write(diagram.getContent())
+    t.close()
+      
+  notes=open("out/{0}.txt".format(shortName),'w')
+  notes.write(overlays)
+  notes.close()
+  
+print("processing:")
+for item in files:
+  if os.path.isfile(item):
+    print("{0}... ".format("".join(item.split('/')[-1].split('.')[:-1])),end="")
+    processFile(item)
+    print("done")
+  elif os.path.isdir(item):
+    print("contents of the '{0}' directory added to the queue".format(item))
+  else: print("the '{0}' path could not be resolved to either a file nor a directory".format(item))