The Rules

Choose a mode and a board size (3×3 to 10×10).
A grid of N×N randomly arranged numbers will appear.
Fix your gaze on the center of the board. The goal is to find each number using your peripheral vision — not by scanning your eyes around the grid.
Tap 1 to start the timer, then tap 2, 3, 4… in order up to N².
Tapping the wrong number does nothing — no penalty, just keep looking.
When you tap the final number, the timer stops and you can submit your score.

The Six Modes

Mode	What changes on a correct tap
Normal	Nothing — tile and number stay visible.
Easy	Cell background disappears; the number floats in space.
Blind	The number disappears; an empty tile remains.
Blind + Easy	Both tile and number vanish — empty space left.
Easy Mix	Cell background disappears and remaining numbers shuffle positions.
Mix	Remaining numbers shuffle to new positions after each tap.

Mix and Easy Mix are the most challenging modes — the target numbers keep moving, forcing your peripheral processing system to constantly re-scan.

Board Sizes

Boards range from 3×3 (9 numbers) to 10×10 (100 numbers). Larger boards require more time and significantly more peripheral field. Start with 4×4 or 5×5 and work your way up.

Standard sizes used in training: 5×5 is the classic Schulte table and the most widely researched size. Athletes often train on 7×7 and 8×8 to push their visual field further.

Tips for Improvement

Don't move your eyes. This is the most common mistake. Looking directly at each number defeats the purpose — peripheral vision only develops when you train it under load.
Relax your focus. A soft, diffuse gaze rather than sharp focus lets you perceive a wider field. Athletes call this "soft eyes."
Practice daily. Research suggests 5–10 minutes per day over several weeks produces measurable improvements in reading speed and reaction time.
Increase board size gradually. Master 4×4 before moving to 5×5. A new board size feels dramatically harder at first but adapts quickly.
Try Mix mode. Even a few sessions on Mix will make Normal feel easy — the constant repositioning forces deeper peripheral adaptation.

Who Uses Schulte Grids?

Athletes — used in professional sports training to improve court vision, field awareness, and split-second decision making. Standard selection test for fighter pilots, racing drivers, and elite military roles.
Seniors — one of the most well-studied tools for cognitive maintenance. Regular practice supports attention, processing speed, and working memory as we age.
Readers and students — daily practice of 5–10 minutes can improve reading speed by 20–30% by widening the span of characters captured per fixation.
ADHD — the structured, immediately rewarding nature of the task helps build sustained attention and reduce distractibility.

History

The Schulte table was developed by the German psychiatrist Walter Schulte in the mid-20th century as a tool for measuring attentional and psychomotor speed. It became widely used in the Soviet sports science program during the 1970s and 1980s — coaches used it to screen and develop elite athletes. Today it is part of standard neuropsychological test batteries and sports performance programs worldwide.