Goal

A set of cells briefly light up — memorise their positions. After they hide, tap every cell that was lit from memory.

Rounds

You start with 5 cells to remember, one more every 3 rounds (up to 9), and the reveal gets shorter each round. The clock pauses while cells are lit.

Scoring

Each correct tap earns points equal to the number of cells that round (5 up to 9). A wrong tap costs 5 points and 1.5 seconds; from the second one in a round, the cells you haven't found flash as a hint. Clear rounds with no wrong taps to build a streak.

Tips

• Group the lit cells by region (top half, left column) rather than individual positions.
• Trace a mental path connecting the lit cells in a single route.
• If you lose track, use your first confident memories first — they are usually the strongest.

Visuospatial Working Memory

Remembering exact grid positions is one of the purest tests of visuospatial working memory — the system that lets you mentally hold and manipulate spatial information.

Recall Accuracy

Distinguishing remembered positions from near-identical distractors trains precision memory — quality of recall, not just quantity.

Attentional Encoding

You must focus intensely during the brief reveal phase. This trains deliberate attentional encoding — the conscious effort to commit information to memory, a skill that improves all learning.