Based on the name "Tile Lock Scrabble" I thought the tiles would actually lock in place, perhaps lightly snap on to the board, but these tiles don't lock on at all.  Instead there are little raised dots on the corners of each square on the board.  Each tile has indentations molded into the corners.  You place a tile on the board and it rests between the dots.  The deluxe edition scrabble board has bezels between the squares that serve pretty much the same purpose as the dots do on this one (but it's twice as much as this one.)  The instructions say that the tiles will stay in place even if the board is tilted, which is absolutely true, but they will not stay in place if the board is bumped or jostled even a little.  The slightest bump and the tiles dance right off their squares.