data/levelmap.txt

   1 1110000000000000000000
   2 1000000000001000011000
   3 1000111100001100000000
   4 1000000000011110000011
   5 1100000000111000000001
   6 1110001111110000000001
   7 1000000000000011110001
   8 1000000000000000000011
   9 1110011100000000000111
  10 1000000000003100000001
  11 1000000000031110000001
  12 1011110000311111111001
  13 1000000000000000000001
  14 1100000000000000000011
  15 2222222214000001333111
  16 1111111111111111111111