Can chimps really beat humans at this?

In a well-known study at Kyoto University, young chimpanzees recalled the positions of briefly shown numbers faster and more accurately than human adults. The chimp test is a playful nod to that finding, letting you see how far you get on the same kind of task.

What is a good score?

Holding around nine or ten tiles is a strong result. The jump in difficulty is steep, because you are memorising both which tiles and in what order after only a moment to look.

Take the whole grid in at a glance instead of reading tile by tile, and group nearby numbers into a path. Speed helps too, since the image of where the numbers were fades quickly.

Are my best scores saved?

Your best result for each game is kept in your browser so you have something to beat next time. It lives only on this device, so clearing your browser data or switching to another device starts you fresh. Nothing is tied to an account because there is no account.

Does anything I do here get sent to a server?

No. Every game runs locally in your browser. Your scores and any text you type stay on your own device, nothing is uploaded, and nothing is logged or stored by us. Once the page has loaded it keeps working even if you go offline.

Chimp Test

Numbered tiles appear on the grid, then the numbers hide. Click the tiles in order, 1, 2, 3 and on, from memory. Each round adds a number. The test is named for research where chimpanzees beat humans at exactly this task. This free chimp test shows how many you can hold. In your browser, no sign-up.

No sign-up, ever
100% free
Nothing uploaded
Works offline after first load
Scores stay on your device

Read the guide: What Is the Chimp Test?

Chimp Test

Best: —

Chimp TestClick the numbers in order. They hide after you click 1. Three slips ends it.

How to use it

1
See the numbers

Tiles show numbers across the grid. Click the 1 and the rest of the numbers hide behind blank tiles.
2
Tap them in order

Click the hidden tiles in number order from memory. Round one starts small and each round adds a tile.
3
Reach your limit

One wrong tile ends the run. Your score is the highest number of tiles you cleared.

When it comes in handy

Working memory check

See how many positions you can lock in after a single look.

Snapshot practice

Train the quick mental photograph that the test rewards.

Take the chimp challenge

Find out whether you can match the famous primate results.

Instant & 100% private — nothing is uploaded

Every game runs right here in your browser, and your best scores are kept on your own device. Nothing is sent to a server, so there is no sign-up and no account. Load the page once and it keeps working even if you go offline.

Frequently asked questions

Can chimps really beat humans at this?: In a well-known study at Kyoto University, young chimpanzees recalled the positions of briefly shown numbers faster and more accurately than human adults. The chimp test is a playful nod to that finding, letting you see how far you get on the same kind of task.
What is a good score?: Holding around nine or ten tiles is a strong result. The jump in difficulty is steep, because you are memorising both which tiles and in what order after only a moment to look.
How do I improve?: Take the whole grid in at a glance instead of reading tile by tile, and group nearby numbers into a path. Speed helps too, since the image of where the numbers were fades quickly.
Are my best scores saved?: Your best result for each game is kept in your browser so you have something to beat next time. It lives only on this device, so clearing your browser data or switching to another device starts you fresh. Nothing is tied to an account because there is no account.
Does anything I do here get sent to a server?: No. Every game runs locally in your browser. Your scores and any text you type stay on your own device, nothing is uploaded, and nothing is logged or stored by us. Once the page has loaded it keeps working even if you go offline.