The description of the kata or the tests need to be corrected.

To me, the kata asks to check if a number can be written as the sum of two cubes in EXACTLY two ways. But if we test for EXACTLY two pairs, we fail the tests. The tests consider correct a number that can be written as the sum of two cubes in AT LEAST two ways.

I may be reading the text wrong, but the number has to be written as the sum of cubes in two ways. n=a^3+b^3=c^3+d^3, where a,b,c,d are positive and different.

From what you are saying, for 46163 you've only managed to find a pair of numbers that satisfy that condition

Mednoob, thank you for your reply!