Chimp Recall - Hidden Number Memory Duel
Chimp Recall on FlagDuel is a free 1v1 working-memory duel: numbers appear scattered on a grid, the moment you tap 1 the rest turn blank, and you must tap them in rising order from memory - complete three boards before your opponent and the round is yours.
How to play
- Press START - numbers appear scattered across the grid, identical layout on both halves.
- Tap 1 - the remaining numbers turn blank. Keep tapping in rising order from memory; a wrong tap redeals the board.
- Complete 3 boards before your opponent to take the round. Each finished board grows the next by one number.
Fair play
A real player from a new country every match. When nobody is free, you face a recorded run — a real person’s taps replayed, never a script.
Identical signals, targets, grids and sequences — and every click visible on both halves.
Every duel is free; accounts arrive later only to save your name on leaderboards.
All duels
Rewards
Win streaks forge belts worn next to your name: bronze at 3, silver at 5, gold at 10 wins in a row.
Every live win lifts your flag on the world board in the header — real duels only, practice matches never count.
Milestone wins will mint a shareable victory card with your name, flag and the story of the match.
SoonFrequently asked questions
Why is it called a chimp test?
A famous Kyoto University study showed the chimpanzee Ayumu beating university students at exactly this task - young chimps hold a photographic snapshot of numbers that humans struggle to match. The task became the most iconic working-memory challenge on the internet.
How many numbers do I have to remember?
Your first board holds four; every completed board adds one, and positions reshuffle each time. Champions ride out seven or eight - at that size the task is pure memory snapshot, not scanning.
What happens on a wrong tap?
The board shakes and redeals at the same size with fresh positions - your progress toward three boards stays, but the time is gone. Slow and clean beats fast and lucky.
Any technique for holding the layout?
Take the snapshot BEFORE touching 1: trace the path 1-2-3 with your eyes and remember the route, not the digits. Players who tap 1 first and then start searching lose the picture the instant the numbers blank out.