Subscribe now

Puzzles

BrainTwister #8: Two cubes

BrainTwister #8: Two cubes

Regulars

Subscriber-only

BrainTwister #7: Home primes

BrainTwister #7: Home primes

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #6: Factor factory

Regulars

Subscriber-only

BrainTwister #5: Diagonal lines

BrainTwister #5: Diagonal lines

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #4: Addition subtraction

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #3: Page turner

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #2: Piles of money

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #1: Digital sevens

Regulars

Subscriber-only

Asset ID: 782705470 New year. Christmas. Snowflakes. New Year's cards.

Puzzle #255: How long will it take for all eight bulbs to be lit up?

Regulars

Subscriber-only

Puzzles #252-254: How often did my children wake on Christmas eve?

Puzzles #252-254: How often did my children wake on Christmas eve?

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

Puzzle #251: Has an island nation solved its skewed sex ratio dilemma?

Regulars

Subscriber-only

3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

Puzzle #250: Can you work out how long it will take us to arrive?

Regulars

Subscriber-only