oh for sure my friend, it wasn't my intention to take over your kata. I'm not sure if I was rude or you're too sensible, in any case, sorry. I understand that takes a lot of work to change it and as it's right now it's a pretty good one, I am just picky programmer lol. I think that I backed "my" (lol) point of view with enough explanation to make it not-just "my" point of view, but it's not a big deal. Don't worry, I'm not dissapointed, it was a suggestion without serious expectations lol. Once again sorry for all the trouble and thank you for the kata.

Maybe there is some ambiguity in the description which have permitted to many to pass the kata. In life there are always ambiguities... To include "your" tests I should change the description and I think that nobody - even only a bit dishonest - changes the rules when the game is on.
Moreover - can be seen as a bad excuse - I would have to modify the kata in its 32 languages and I don't have enough time for that:-)
Sorry if I disappoint "your" point of view but mine is I can't change anything and, after all, it's my kata.

Please check my reply in my previous issue report. I know you marked it as resolved but I don't think it's resolved yet. Thanks

I agree that you didn't speficy a!=b but if a=b there is going to be just one number to exclude from the secuence. A "solution" that return the pair (3,3) for N = 5 is wrong since (1+2+4+5 = 12) != (9 = 3*3). That's my point, altought I have to admit that my solution don't find pairs for a = b where 1+2+..+n - a = a*a. Don't be sorry, even the most popular solution don't check it. If your real intention was to allow a=b then please include a test for N = 3, 20, 119, 696, 4059, 23660, 137903, 803760 or 4684659, those have solutions for a=b. Thanks.

Interesting suggestion but I did not say explicitly in the description that "a" must be different from "b". To include these test cases, I should have made it clear somehow. Sorry.

Post what you have so far

This fails at least for n equals 5, 15, 32, 90, 189, 527, 1104, 3074, 6437, 17919 and 37520, because it doesn't check a != b