So W cant j'adoube it. What about B ?FIDE Law 4.2.1 wrote: Only the player having the move may adjust one or more pieces on their squares, provided that he first expresses his intention (for example by saying “j’adoube” or “I adjust”).
and B can't either.FIDE Law 6.2.5 wrote: 6.2.5 Only the player whose clock is running is allowed to adjust the pieces.