Too easy for 6kyu.

Enabled in this fork

C# tests generate warnings:

tests/Fixture.cs(41,31): warning CS0168: The variable 'e' is declared but never used
tests/Fixture.cs(56,31): warning CS0168: The variable 'e' is declared but never used
tests/Fixture.cs(71,31): warning CS0168: The variable 'e' is declared but never used
tests/Fixture.cs(86,31): warning CS0168: The variable 'e' is declared but never used

That's clever, but damn is that going to be tough to debug O_o
Can you explain it?

フインヤと思う💀💀

Can you explain how this works?

3х3 решается быстро генетикой, дальше все хуже

approved

COBOL translation.

OP solved it closing ~~

tests/Fixture.cs(41,31): warning CS0168: The variable 'e' is declared but never used

Needs more test cases (at least in Java). My deliberately-bad solution passes the random tests by luck (occasionally).

I like how succinct and readable this is, but if you're going to do repeated string concanetations it's good practice to use a StringBuilder. Otherwise, this is great ^_^