There are 19 lines in the horizontal and vertical directions of Go, so there are 18 squares in the horizontal and vertical directions, making a total of * * *18 = 324 squares.

Put 1 grid 1 copper coins, put 2 copper coins in the second grid, put 4 copper coins in the third grid, ..., put N- 1 power in the second grid, ..., and put 2 copper coins to the 323rd power in the 324th grid.

This is a geometric series.

So the total is1+2+4+8+...+2 323 = (2 324)-1.

This number is about 3 times 10 to the 97th power, which is an astronomical number. Probably the number of basic particles that make up the whole universe is not as large as this number!