>>24468124
If you read the passage in question, Jon actually thinks when he sees the direwolf that it's Ghost who has 'leapt over the Wall', when in actual fact it's Bran who has figuratively leapt over the wall of Queenscrown (by skinchanging Summer while his human body remains at the top of the tower). In 'chess terms' the rook has moved three spaces to the right coming to occupy the space formally occupied by the queen, which is a way of leaping over a wall too. Best of all, this in turn then allows the king to leap over the rook, coming to land on the opposite side to safety -- which is exactly what Bran-as-Summer-rook in his queenside castling manoeuvre facilitates for Jon, finally bringing him conclusively to safety on the adjacent square formerly occupied by the bishop (I guess 'bishops' could represent Castle Black...maybe because of their monastic lifestyle!)

Less obtuse, I think Bran has performed this type of move covering for Jon before. Remember Catelyn's curious and cruel comment to Jon at Bran's coma bedside, 'It should have been you, bastard.'

Note that Bran already resembles a bird --not only in the fall which was like taking a flight of sorts, but his body comes across to Jon as birdlike... i.e. a rook! And by falling from the First Keep (which @Frey family reunion has likened to the 'first king' or 'king' chess piece), Bran has symbolically fallen in the stead of the 'king'. In other words, he's taken the fall for Jon -- effectively allowing him to make his way north, while he remains behind at Winterfell.

>the King pieces in the Isle of Lewis chess sets, seated with his sword on his knees is basically the model for the Stark kings in the crypts

>https://en.wikipedia.org/wiki/Lewis_chessmen