25 hand-picked finds

Puzzles & Brain Teasers

Problems, patterns, and satisfying little challenges for an awake brain. Every entry below has been opened, checked, and given its own field notes.

Puzzles & Brain Teasers

Close Hue

A daily test of whether ‘mauve’ in your head has any relationship to mauve on a screen.

5 minNo signup
Puzzles & Brain Teasers

Chess.com

A crowded chess club that never closes

5 minNo signup
Puzzles & Brain Teasers

Dino Pal

Five tiny conference warm-ups disguised as a puzzle box with a very large logo on it.

5 minNo signup
Puzzles & Brain Teasers

DoQuizzes

A trivia buffet where the map round is sitting beside a picture quiz and both want your full attention.

5 minNo signup
Puzzles & Brain Teasers

Lizard Point Quizzes

A friendly atlas that asks you to point first and panic about capitals later.

5 minNo signup
Puzzles & Brain Teasers

Quizmoji

A daily rebus where two tiny faces or objects have to do the work of an entire thought.

5 minNo signup
Puzzles & Brain Teasers

Riddle of the Day

One thoughtful logic problem a day, with an archive for second helpings.

5 minNo signup
Puzzles & Brain Teasers

Sudoku.com

Six difficulty rungs, pencil notes, and a daily grid—with a three-strike rule

5 minNo signup
Puzzles & Brain Teasers

0h h1

Binary Sudoku dressed in two colors and zero clutter.

10 minNo signup
Puzzles & Brain Teasers

0h n0

A blue-and-red logic grid where every dot is watching its neighbors

10 minNo signup
Puzzles & Brain Teasers

Cultural Icons

A cabinet of generated icons that turns cultural memory into chat and guesswork

10 minNo signup
Puzzles & Brain Teasers

EyeWire Explore

A branching 3D gallery shaped by a crowd's patient neuron tracing

10 minNo signup
Puzzles & Brain Teasers

Jane Street Current Puzzle

One rotating brainteaser, currently sending a tiny ant on a very consequential walk.

10 minNo signup
Puzzles & Brain Teasers

Net

A pipe-turning logic grid where every loose end has somewhere to go

10 minNo signup
Puzzles & Brain Teasers

Quincunx (Galton Board)

Drop a crowd of virtual balls and watch probability pile up in the middle.

10 minNo signup
Puzzles & Brain Teasers

Say What You See

A prompt-writing game where seeing clearly is only half the battle

10 minNo signup
Puzzles & Brain Teasers

Semantle

Find one hidden word by chasing meaning instead of letters

10 minNo signup
Puzzles & Brain Teasers

Seterra

A globe-sized stack of map drills for when your capitals get wobbly

10 minNo signup
Puzzles & Brain Teasers

Squaredle

A letter grid that keeps finding new ways to hide the obvious.

10 minNo signup
Puzzles & Brain Teasers

sudoku.coach

Sudoku practice with a lesson plan tucked inside the puzzle box.

10 minNo signup
Puzzles & Brain Teasers

The Wiki Game

Turn Wikipedia's blue links into a sprint from one unlikely subject to another.

10 minNo signup
Puzzles & Brain Teasers

Wikitrivia

A pocket-sized history panic, one misplaced century at a time.

10 minNo signup