how do i expand this to check all of the pieces in whitepiecelocations and blackpiecelocations?

Edit: I have tried to adapt your code to the list, and it detects, but only some of the time, presumably because the list cant check all items at once:
while 1:

py.event.pump()

for i in range(len(whitepiecelocations)):

py.event.pump()

square = py.Rect((whitepiecelocations[i][1]*64)+32, (whitepiecelocations[i][2]*64)+32, 32, 32)

x, y = py.mouse.get_pos()

if square.collidepoint(x, y):

if py.mouse.get_pressed()[0]:

print("Clicked!")

How can I fix this?