Dual N-Back

Spot the Repeats

A square will light up each turn. Your job: press Match when the position or color is the same as a few steps back. Pick how far back to look—1 or 2 steps. Quick reflexes and sharp focus win.

How to play:

1.Watch the grid—one square lights up for 1 second
2.Press Match when position or color matches what you saw 1 or 2 steps ago. You have a few seconds to respond before the next one.
3.20 trials per round. Higher accuracy = better score

Choose difficulty:

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