Number Memory

Two-digit numbers appear one at a time, one a second. Three seconds after the last one, a grid of numbers appears: click the ones you saw, in any order. Get them all and the next round has one more number; click one you did not see and the round ends, you are shown the right ones, and you try that length again. Three missed rounds in a row end the test. It starts at 2 numbers.

Your score is the most numbers you picked out without a mistake.