This test measures your brain's ability to perceive and process complex visual stimuli.

Two boxes will appear on the screen, each containing a complex array of abstract shapes.

Are the two boxes identical or are they different? Click Match or Mismatch to indicate your answer.

If you get it correct, the next problem will be more difficult.If you get it wrong, the next problem will be easier.

Solve as many problems as you can in 90 seconds.