black can't be in check with white to move
thats exactly why they claimed it to be illegal
black can't be in check with white to move
thats exactly why they claimed it to be illegal
that seems pretty legal to me.
The Pawn on e7 must have just moved because it's checking Black. But it had nowhere to come from.
You are expected put some thought into why your position is illegal and it should not be immediately obvious.
[Possible illegal position]
I can see you tried hard to create an illegal position that would make us think it might be legal without a careful analysis. This one was not too successful, but keep trying.