First try, fails for more than 6 numbers

generator.py

@@ -0,0 +1,57 @@
+#! env python3
+
+from random import randrange
+
+def existing_combination(number, reds, combinations):
+  for red in reds:
+    if (red + number) in combinations:
+      return True
+  return False
+
+def update_combinations(number, reds, combinations):
+  for red in reds:
+    combinations.append(red + number)
+  return combinations
+
+debug = True
+red_size = 6
+blue_size = red_size
+reds = []
+blues = []
+combinations = []
+
+for i in range(red_size):
+  new_number = randrange(99)
+
+  while new_number in reds:
+    new_number = randrange(99)
+
+  reds.append(new_number)
+
+  if debug:
+    print(f'red #{i+1} found')
+
+reds.sort()
+if debug:
+  print(reds)
+
+for i in range(blue_size):
+  new_number = randrange(99)
+
+  while new_number in reds or new_number in blues or existing_combination(new_number, reds, combinations):
+    new_number = randrange(99)
+
+  blues.append(new_number)
+  combinations = update_combinations(new_number, reds, combinations)
+
+  if debug:
+    print(f'blue #{i+1} found')
+
+blues.sort()
+combinations.sort()
+
+if debug:
+  print(blues)
+  print(combinations)
+
+# vim: set sw=2 ts=2 et: