The individual clues will turn green when satisfied, red when not.
Puzzle examples:
MIT puzzle (from Text Algorithm exam)
Solution
Very easy, iteration 1
Solution
1389924192029662
Solution
1389924191714643
Solution
1389924191386625
Solution
1389924191034605
Solution
1389924190671584
Solution
1389924190358566
Solution
1389924190075550
Solution
1389924189788533
Solution
1389924189506517
Solution
1389924189214500
Solution
1389923839891520
Solution