Illegal castling that occurs when i set up this position.

I set up a position on lichess board editor and then went to analysis to see mate in 2 , and the computer showed an illegal casltling of the king in which the king was on g8 and rook was on h8

Was castling enabled in settings?

I guess you set it up with castling rights enabled, making it a chess960 game.

Castling is like that way in Chess960. If there is some other issue, I do not know what it can be

Thank you for the information
KenulL_76,
nadjarostowa,
golu_2013

It was indeed the castling setting that i never knew about.I did the necssary setting and it worked!

Also note that the editor is not fool-proof in that regard. For example, you can enter the following position:

lichess.org/editor/2r2k1r/8/8/2PP1pp1/8/8/8/RK4R1_w_KQkq_-_0_1?color=white

This allows both sides to castle, which would be impossible with chess960.

But in chess960 king has to be between rooks , isnt that the case in the link you sent , how is the castling illegal, i dont get it

@nadjarostowa said in #6:
> Also note that the editor is not fool-proof in that regard. For example, you can enter the following position:
>
> lichess.org/editor/2r2k1r/8/8/2PP1pp1/8/8/8/RK4R1_w_KQkq_-_0_1?color=white
>
> This allows both sides to castle, which would be impossible with chess960.

That's not really a bug. You never specified that the game is Chess960, you only specified castling rights which were done exactly as you asked them.

@TheCleverKnight said in #7:
> But in chess960 king has to be between rooks , isnt that the case in the link you sent , how is the castling illegal, i dont get it

But according to 960, the kings and rooks would be opposite each other.

@AsDaGo I agree. It supports a variant, that is otherwise not supported. Or known. :-)