[OkayPhysicist]

You absolutely can ban someone because of an allegation. It's a chess club. The worst punishment they can levy is banishment. That doesn't need the kind of "beyond reasonable doubt" certainty that a court throwing you in prison needs.

[inemesitaffia]

Everything is fine till it happens to you.

Im sure you've watched House M.D

[moshun]

If this kind of ban was happening all over the place for similar reasons I’d argue that you have a point. After digging a bit, however, I wasn’t able to find many males banned for harassment or assault on another member. So it seems you’re protesting on the basis of an unlikely hypothetical scenario.

[inemesitaffia]

I don't know about Chess but I've seen cases elsewhere of both men and women.

Nothing hypothetical here.

Like I said it all makes sense till it happens to you