Judge whether the current position matches the position from N steps back.
Press Match only when the current position exactly matches the one from N steps back. Pressing when there's no match counts as an error!
If positions matched but you didn't press the button, it's counted as a miss. Stay focused!
Tip
N-Back training is the gold standard for working memory training. Jaeggi et al. (2008) in PNAS reported that N-Back training improves fluid intelligence, and subsequent meta-analyses confirmed significant effects.