←

EYEBALL

Puzzle #31 · Sat, Oct 31

This arc is part of a circle. Where is its center?

?

Eyeball

More brain teasers

Daily lineup score so far:

Daily lineup score:

Challenge your friends to beat it!

Next Eyeball in –

Puzzle archive

Play a day you missed for a score that sticks.

Statistics

Scores

Send feedback

What would you tell us? Email, if you want a reply (optional)

Sends this puzzle’s number, your screen size, browser and app version so we can reproduce it. Nothing that identifies you.

How to play

Five things to judge by eye, dealt each day from twelve kinds. One guess each — then the truth is drawn over it.

Some rounds are dialed. Slide to your estimate — how many dots, what percent, how many degrees, how many times bigger or longer. The − and + buttons nudge it one step.
Some are placed. Tap or drag on the picture — where a circle’s center is, where an arrow lands, where two lines would meet, where the average sits.
Count shows its dots for three seconds, once. Look first, then answer.
Lock in commits the guess. A round scores 100 for a guess within a small margin of the truth — you never have to be perfect — and falls steadily to 0 for a wild one.
Your score for the day is the average of the five, out of 100.

One set a day. Your scores are kept — Statistics is in the menu — and Eyeball is one of the daily line-up’s four, so its score counts toward your day’s total.

Read the full guide, with every kind of round

EYEBALL

?

Menu

Play

Play today’s puzzles More brain teasers

Progress

Keep your streaks

Help

Solution & walkthrough

Settings