Square a snowflake by rolf

N=63
r=range(N)
f=[[" "for i in r]for i in r]
f[N/2][N/2]="X"  
while 1:
 w=0
 for x in r:
  for y in r:
   c=0
   for i in range(-1,2):
    for j in range(-1,2):
      if 0<=x+i<N and 0<=y+j<N and f[y+j][x+i]=="X":c+=1
   if c==1 and f[y][x]!="X":f[y][x]="x";w=1
 for j in r:
  for i in r:
   if f[j][i]=="x":f[j][i]="X"
 if w==0:break     
for x in f:print "".join(x)

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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