Yes! I can see all 12, though not at first. If you relax your eyes it’s like those “hidden” pictures (I can’t think of the name at the moment). The picture plane seems to drop back behind the screen and it gets weirdly intense. Then you can rove your eye around within the picture without losing any of the black dots. … But then, OMG, I started seeing black dots on all the “X” intersections along those three horizontal lines—now that was weird.
edited final sentence, to specify all the “X” intersections.