[superplussed]

I agree, it seems poor sportsmanship on the part of Codewars. I mean they could have a special leaderboard for those who "hack" the game in one way or another. It seems in the best interest of the software itself, but also of the community, to foster this kind of creativity.

[fishnchips]

They're not very chivalrous to be sure. I managed to break out of their sandbox and sent them a proof with a repro. A year later the glaring hole is still there, and my account was banned.

[deadowl]

I didn't know they started banning people.

[andreareina]

IIRC Starfighter explicitly okayed exploits that didn't "ruin the fun" (e.g. don't trash another user's data, DoS the game, etc).