Bronstein's lines of attack on the chessboard I remember reading as a child in a book by David Bronstein about an interesting piece of advice that he gave. He recommended to imagine the lines of movement for each piece all across the board as if not restrained by any intervening pieces. This is supposed to help to see all the tactical possibilities.

My question is to help me locate this quotation. I am also interested in any kind of remarks concerning this piece of advice.
This is actually a common piece of advice given to students of chess. Often chess blindness begins with not projecting your piece movement abilities beyond the first encountered piece in it's way. this helps to clear that deficiency away and begin to cultivate imagination and fantasy position ideas in your mind.