Rules & quick reference
| Initial grid | 3 × 3 |
|---|---|
| Exposure | 1.2 seconds per pattern |
| Grid growth | Every 3 levels, up to 7 × 7 |
| Strikes | A wrong cell consumes one strike; 3 ends the run |
Look, wait, then reconstruct the pattern
Select Show pattern and inspect the highlighted cells. After 1.2 seconds, the highlights disappear and the board becomes interactive. Select every position that was lit. Correct positions remain highlighted as feedback and cannot be counted twice. A wrong position ends that attempt and uses a strike. You do not have to recall an order: any selection order is accepted as long as the complete set of positions is correct.
How the challenge grows
Level one shows three positions on a three-by-three board. The target set gains a position each level, and the board grows every three levels until it reaches seven by seven. The set remains smaller than the full board. After a success you choose when to show the next pattern. After an error you retry the same level with a fresh pattern. Three total strikes end the run, and the saved score is the last level fully completed.
Understand the role of feedback
This task gives immediate feedback after a selected cell. That makes it a guided practice activity rather than a test with a single blind response at the end. A comparison study using different exposure times, scoring rules or feedback would measure a different task. The score should not be interpreted as a diagnosis, IQ estimate or universal measure of visual ability. It depends on attention, familiarity with the interface and the size of the displayed board.
Practice patterns without overreading a score
Try remembering small shapes or groups rather than naming every square independently. Keep the same device and zoom level across sessions if you want to compare your local history. A new grid size changes the spatial layout and the number of possible positions, so a step in difficulty is deliberate. Use the number-memory test for an ordered digit string and sequence memory for a temporal pattern. Take a break if attention drifts; hidden-tab interruptions cancel active runs instead of producing a score.
Your result stays on this device
Completed game results are saved in this browser when local storage is available. Bests and recent history describe this device’s saved runs, not a public leaderboard. Changing browsers, clearing site data or using private browsing can remove them. Copy score writes only the visible result summary to your clipboard when you request it; sharing is your choice. Clear local game data removes scores, daily completion markers and the saved 2048 board for this origin. No game result is uploaded, and the games remain usable when persistent storage is unavailable. Use the rule table to check what the active mode measures before comparing another session. A changed duration, input method or grid difficulty can change the task even when the displayed score uses the same unit.
Frequently asked questions
How long is the pattern shown?
1.2 seconds before the board becomes interactive.
Do I need to select cells in order?
No. This game checks a set of remembered positions.
What happens after a wrong cell?
The attempt ends, a strike is added, and a fresh pattern is offered at the same level.
Does this measure intelligence?
No. It is a local practice task with its own exposure and feedback rules.
Built by Mihai · Reviewed 2026-10-24 · Read the related technical guide · Testing policy