matrix field=25 rows=10 cols=10
  0  0  1  0  0  0  0  0  0  0
 16  4  4  0  0  0  0  0  0  0
 19 15  1  0  0  0  0  0  0  0
  0  0  0  0  1  0  0  0  0  0
  0  0  0  0  0  0  1  0  0  0
  0  0  0  0  0  0  0  1  0  0
  0  0  0  1  0  0  0  0  0  0
  8  8  0 19  6  2  5 24 13  1
  8  9 16 21  2  0  7 17 10  6
  9 16 19 11  9 13 10 15 12 22