Focus Challenge
Tune the difficulty, then test how sharp your focus is today.
Grid size (4×4 = 16)
Color mode
Sequence mode
Free online Schulte table
A focus test you can't fake your way through
Most focus tests tell you to “concentrate harder” and hope for the best. Focus Challenge is a Schulte-table style number grid you actually have to solve: find every number in order, against a clock, with nothing highlighted to help you. It's built for students cramming before an exam, competitive-exam aspirants training visual scanning speed, and anyone who wants an honest two-minute read on how scattered their attention is today. Pick a grid from 3×3 up to a genuinely brutal 8×8, layer on random tilts and mid-game position swaps once the base version feels easy, and get your result as a percentage — so a 4×4 attempt and an 8×8 attempt are actually comparable. No sign-up, no downloads. It runs straight in your browser.
Play it nowGrid sizes
3×3 to 8×8
Color modes
3 options
Difficulty modes
Sequential or random-subset
Cost
Free, no account
How to use it
Playing Focus Challenge, step by step
- 1
Choose your grid size and mode
Start on the settings screen and pick a grid size — 4×4 is the classic Schulte table, 6×6 or 8×8 if you want a real test. Choose a color mode (colorful background, colorful numbers only, or plain black-on-white) and a sequence mode: straight 1-to-N, or a random increasing subset if you want to train recall along with scanning.
- 2
Memorize the target, then start the clock
Tap Continue and the Ready screen shows your time limit — and, in random-subset mode, the exact sequence you'll need to find. Hit Start once you've actually looked at it. The timer begins the instant you tap, not a moment later.
- 3
Tap the numbers in order — nothing gets highlighted
Find 1, tap it, find the next one, tap it. Nothing on the grid changes color or dims to mark your progress, so you're relying entirely on your own attention. A wrong tap won't end your run — you'll get a quick notification and can keep going.
- 4
Read your score and try to beat it
When you finish the sequence or the timer hits zero, you'll see your accuracy percentage, how many numbers you found, how many mistakes you made, and your total time. Run the same settings again to chase a better number, or go back and bump the difficulty.
The logic behind your score
How your Focus Score is actually calculated
Your score isn't a raw count — it's accuracy as a percentage, so grids of different sizes stay comparable:
We use percentage instead of a raw score on purpose. Finding 14 out of 16 numbers on a 4×4 grid and finding 14 out of 64 on an 8×8 grid say very different things about your focus — only the percentage puts both runs on the same scale.
Time limits follow the same logic. In sequential mode you get roughly one second per cell, so a 4×4 grid gives you about 16 seconds and a 6×6 grid gives you around 36. In random-subset mode the limit runs closer to 1.3 seconds per target number plus a small buffer, since hunting for a specific memorized number takes longer than working straight through in order.
What the bands mean, based on runs we've seen
90–100%
Genuinely sharp
70–89%
Solid run
50–69%
Average — most first attempts land here
Under 50%
Attention likely drifted early
Not just for fun
What this actually trains — and what it doesn't
This format isn't something we invented for engagement. Walter Schulte, a German psychiatrist, built number grids like this in the mid-20th century as a clinical way to measure how quickly someone could scan and locate targets under time pressure — a straightforward attention test, not a game. Speed-reading coaches and cognitive-training programs picked up the same format decades later, because the underlying task — find a specific target inside a cluttered field, fast — maps onto a real, well-documented cognitive skill. You can read more about the original method on HandWiki.
Who actually uses this
Real ways people fit this into their day
Before an exam
A lot of players use the 5×5 or 6×6 grid as a two-minute warm-up before mock tests for exams like SSC, banking, or UPSC prelims, where visual scanning speed under time pressure is basically half the battle.
Mid-afternoon check-in
Working from home and the 3pm slump hits? A quick 4×4 run is an honest way to check whether you're actually sharp enough to keep going, or whether you need a real break instead of pretending to push through.
Classroom warm-up
A few teachers use the plain black-and-white 4×4 mode as a 60-second settle-down activity before a lesson starts — no colors, no distractions, just the numbers.
Chasing a personal record
Some people just like beating their own score. The 8×8 grid with randomized tilts and mid-game position swaps turned on is close to the hardest version of this test we could build without making it unplayable.
Questions people actually ask
Focus Challenge — frequently asked questions
What is a Schulte table, and is Focus Challenge the same thing?
A Schulte table is a grid of numbers, usually 5×5, used to train and measure visual scanning speed and peripheral attention — psychologists and speed-reading coaches have used the format for decades. Focus Challenge is a digital, timed version of the same idea, with adjustable grid sizes, color modes, and difficulty options the original paper version never had.
How many numbers should I be able to find in the time given?
It depends heavily on grid size and mode, but as a rough benchmark, most people completing a standard 4×4 sequential grid land between 70% and 90% accuracy on their first few attempts. If you're consistently below 50%, it usually means you're losing the thread within the first handful of numbers rather than running out of time.
Can this game help with ADHD or attention problems?
It isn't a diagnostic tool and it's not a substitute for a clinician's evaluation, so we won't claim it treats anything. What it can do is give you a consistent, repeatable way to notice how your attention varies day to day. If you're genuinely concerned about attention difficulties, talk to a doctor rather than relying on a game's score.
Why doesn't the game highlight the number I'm looking for?
Because that would defeat the point. A Schulte table measures how well you can hold a target in mind and scan for it without any external cue — highlighting the next number would turn it into a reaction-time test instead of a focus test.
What happens if I tap the wrong number?
You get a short notification and the round keeps running — a single mistake doesn't end your attempt. We track your mistake count separately from your accuracy score, so you can see both how far you got and how clean your run was.
Is Focus Challenge free, and do I need to sign up?
Yes to both. It's free, and there's no account or download required — everything runs directly in your browser. Your settings reset each session unless you keep the tab open.
