This test measures your brain's perceptual acuity.

Two panels will appear, one containing two overlapping shapes and the other containing just one shape.

Is the single shape identical to one of the overlapping shapes or is it subtly 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