The Lo Shu grid or magic square is an ancient Chinese branch of numerology used to interpret all aspects of one's life. Details here.

It comprises a 9-square grid with 3 rows and 3 columns. The sum of this grid (the addition of the rows, columns, and diagonals) equals 15, which is considered a lucky number. Additionally, the ...

With random numbers, contestants decide whether to buy boxes in a cluster or scatter them throughout the grid. When squares are auctioned after the column and rows are numbered, owners want boxes ...

And then work out the grid reference. Start by going along the corridor or bottom of the map. In the left-hand corner of the square is the eastings number: zero, four. Next, go up the stairs.