It's a checkerboard. Make a new 2x2 document and make 2 corners black. Save it as a pattern. Then just change the size when you apply it.
It's a ----ing blackbox and a whitebox beside each other, not ----ing rocket science or the question to the meaning of life.
youve got to be an idiot to not to know how to make that pattern, and no its not the transparent thing.
WOAH SORRY FOR ASKING A DAMN QUESTION!! I know how to make patterns Its just everytime I do it it dont look like that.... chill out.