On the Subject of Graffiti Numbers

The answer to this puzzle is spray painted on the wall. Hurry up and punch it in!

• The module consists of a graffiti wall containing nine painted numbers from 1–9. Each digit will only appear once. Warning: ‘7’ and ‘1’ look similar.
• To disarm the module, you must spray paint the correct buttons in the order dictated by the rules below:
  • If there are more red numbers than green numbers, start at Rule #8 and progress in reverse order.
  • Otherwise, if there are more blue numbers than yellow numbers, start at Rule #6.
  • Otherwise, if there are more green numbers than blue numbers, start at Rule #4 and progress in reverse order.
  • Otherwise, start at Rule #1.
• In each instance, if the rule is true, spray that number.

Rule #	Rule
1	The left column is in ascending order (top to bottom).
2	The top row is in descending order (left to right).
3	The sum of the four corners is greater than the sum of the other numbers.
4	The number ‘1’ is blue.
5	The top row is mostly primes.
6	The last digit of the sum of the first two numbers in a column is equal to the bottom number of the same column.
7	The sum of the two diagonals are not equal.
8	The corner numbers have no more than two colours.
9	Fewer than three rules are true (at this point in your calculation).