💡 Tip: For smaller screens, start with 3×3 or 4×4 grid size for better visibility and tap accuracy.
Memorize the highlighted pattern, then recreate it by clicking the cells. Auto mode adjusts display time and pattern size based on your performance (shown as +/-ms and +/-cells). Press Esc to pause.
Click/tap to start
Session Summary
Recent Results
How to Use (click to expand)
Click/tap the test area to begin.
Watch the pattern of highlighted cells carefully.
After the pattern disappears, click the cells to recreate it.
Click "Submit Answer" when you're done.
Your accuracy will be scored using Jaccard similarity (penalizes incorrect selections).
Press Esc to pause/resume at any time.
Trains visual working memory - essential for chess, sports strategy, and spatial reasoning.