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The statement is fuzzy, imprecise or incomplete.
I have to deduce the requirement from test cases. Reading the statement alone did not help.
Being a buzzle might be recursive.
Thanks for the clue !
I totally agree !
I think that the difficulty level for this puzzle should be set to Medium.
Levels 1-3 are easy, but Buzzle level 4 is quite a bit harder.
How come in the example in level 4, 82 is not a buzzle?
in base 12, k = 7,11; 82 → 6A → sum (6+10), next iteration 16 last digit 6 != 11 && 6 != 7 but the sum is (1+6) = 7 which should be buzzle; or am I misunderstanding the procedure?