%% Nonogram "hard"
%% Note: I don't remember where I found this. And it isn't very hard.
rows = 10;
row_rule_len = 4;
row_rules = array2d(1..rows, 1..row_rule_len,
  [
   0,0,0,1,
   0,0,0,3,
   0,0,1,3,
   0,0,2,4,
   0,0,1,2,
   0,2,1,1,
   1,1,1,1,
   0,2,1,1,
   0,0,2,2,
   0,0,0,5
   ]);

cols = 10;
col_rule_len = 4;
col_rules = array2d(1..cols, 1..col_rule_len,
  [
   0,0,0,4,
   0,0,1,3,
   0,0,2,3,
   0,0,1,2,
   0,0,2,2,
   0,1,1,1,
   1,1,1,1,
   0,1,1,1,
   0,0,1,2,
   0,0,0,5
   ]);