Very nice! This solution eats my solution before breakfast :´-)

Yes. I understand this.

The thing is: In my example you check only for "33" in num2 if you do not understand there could more than one triple in num1.

So I suggest show such a case in the Kata description...

Just my 2cents...

Have a nice one!

Hi. Thx for your reply!

In my example, the first triple would we "333" (plus we have "888" and "666"; so "multiple" triples in num1).

In the Kata-description, in all examples provided, you only see max. one triple in each num1.

One could argue that in a random number multiple triples are of course a possibility but I think it may be easier to grasp the challenge if you actually show this possbility.

I, for example, assumed there could be only one triple in num1 so I needed to research why some tests failed.

Best wishes!

I suggest to enhance the instructions to make more clear that multiple tripples/doubles are possible per number

E.g.:
num1: 8611223333888666 num2: 495281788

there is a typo(?): "given the list >Ist<" ?