Hi there.
In this election, we look at another casting role, which is there must be space between the king and
the rook, only space, no pieces.
So, for example, here, there's this neutze in the way.
So whites cannot actually legal legally.
Castle queen size.
You can't do that because the knights here and the same with black hair can't cancel on the king's side
because of that bishop obstructing between king and rock.
It's between King and rook.
There can't be a peace there, so in this position of view, if we want to control Queensland, we could
move on night and say they cancelled Queensland, which is possible.
We could cancel Queensland, which is possible because I know it's also obstructed that check.
So we haven't passed through check.
We've we've been able to cancel Queensland that let's look at this again.
So.
Say.
We counsel Kingside, the opponent cannot counsel Kingside because of the bishop, there can't be anything
between the camera if they move their bishop and let's say we move all night, then they can either
counsel queen side or Kingside here, Queen Queensland, because there's no peace between King and Rock.
They're all kingside because there's no peace between the king and rock.
So yes, to recap then to reinforce the rules of crossing, there's quite a few, isn't there?
There can't be any obstruction between king and rock.
So there is there is an obstruction here.
There can't be a pesky peace putting us in check at the end of it.
Say, say there was a bishop there.
We couldn't conceive queen side either.
Say there was a bishop there.
We couldn't conceive queen side either because we'd be passing through check.
If there was a bishop here and there wasn't an obstruction, then we could still consequence.
Like the king didn't go through check.
If a king had previously moved before and move back then we can't cause anywhere if our rook on the
queen side to move somewhere moved back.
We can't.
Can't cos on the queen side and the same for this rook, if it moved somewhere, moved back, we can't
cross that side.
So if both the move somewhere moved back, we can't control anywhere either Queensland kingside.
So yes, the crossing rules are pretty involved.
But once you get the hang of them hopefully you'll be fine.
Even in your casual games where you have to enforce these rules with your casual opponents online,
you won't be able to do.
Illegal moves, so the Kosslyn rules will be enforced for you.
OK.
That's so much.