I used Grid System(3x3) to memorize all images of the numbers of “Dominic System”(00-99). To my surprise,it worked very very well. It took only two rooms(5 Walls x 5 Walls) to encode all images of Dominic System. I did this three years ago. And I can still remember the images on the walls that I organized in a Grid…
I use a Grid System (or as I like to call it a Table). I don’t use it for everything, but I easily could with how versatile tables are. I learned how to do the table method from Harry Lorayne who learned the method from Bernard Zufall (I recently bought one of his books and I want to read it soon).
The way that their method differs from yours is that they use consistent “keys” to associate and store data while you guys use contexts that you think up. The keying system works for me since I won’t forget what was the first link in sequence was for each journey of each cell. It also gives me a sense of locality, which is really important when trying to memorize tables like conjugation or declension tables where location is important.
Aime Paris and Gregor von Feinaigle used a sort of mental grid to create artificial memory palaces, but they recommended that you either have a consistent set of objects in each cell or that you “overlay” the grid over a location you already know well.
The grid system is oddly intuitive to me. I use a variant of it (a 3*3*3 box) to place 27 loci in a room, with the middle one floating in the middle of the room.
I use a grid system, which I expand with Architectural loci as well. I have used it very successfully to learn the Dewey Decimal System which I use as the basis for an ever expanding basis for my knowledge map.
Not entirely the same thing, but I have recently been experimenting with using a chessboard as a memory palace. a8 as the first loci, b8 as the second, etc.
Since I have so much experience with the game, I have an intimate relationship with every square and so I can differentiate them in my mind almost as easily as any other of my memory palaces.
I am confident that every time I use this it is becoming more natural. The full chess board is enough to store nearly 400 digits