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For Geeks & Brainiacs (Warning: Very Hard)

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We hope you enjoy our collection of free geeks and brainiacs puzzles. You'll find a mix of both classic and our own original geeks and brainiacs puzzles.

Earthquake
Magnitude Puzzle Thumbnail
Hard
Counterfeit
Coin Puzzle Thumbnail
Paper Required Hard Long
Cocktail
Deduction Puzzle Thumbnail
Paper Required Hard Exclusive
Twelve
Matches Puzzle Thumbnail
Hard Interactive
Wet
Sponge Puzzle Thumbnail
Paper Required
Trading
Places Puzzle Thumbnail
Paper Required Hard
Splitting
Up The Gold Puzzle Thumbnail
Paper Required Hard Long
The Three
Doors Puzzle Thumbnail
Hard
Tightly
Packed Puzzle Thumbnail
Paper Required Calculator Required
Property
Division Puzzle Thumbnail
Paper Required Hard
Orbiting
Coin Puzzle Thumbnail
ABCD Oh What
A Mystery Puzzle Thumbnail
Paper Required Hard
Cheryl's
Birthday Puzzle Thumbnail
Earliest
Date & Time Puzzle Thumbnail
Hard Long
Ditloid
Deduction 1 Puzzle Thumbnail
Hard Exclusive
Boy Born On
A Tuesday Puzzle Thumbnail
Hard Long
Whole Lotta
Shakin Puzzle Thumbnail
Hard
The Five
Cuts Puzzle Thumbnail
Paper Required Hard Long
What Comes
Next Puzzle Thumbnail
Hard Calculator Required
Ditloid
Deduction 2 Puzzle Thumbnail
Hard Exclusive
How Many
Children Puzzle Thumbnail
Paper Required Hard
Thousand
Locker High Puzzle Thumbnail
Paper Required Calculator Required Hard
Three
Red Hats Puzzle Thumbnail
Hard
What's My
Age Again Puzzle Thumbnail
Paper Required Hard
Even Digit
Total Puzzle Thumbnail
Paper Required Hard
Ditloid
Deduction 4 Puzzle Thumbnail
Hard
Doughnut
Dilemma Puzzle Thumbnail
Hard Long
The Game
Of Googol Puzzle Thumbnail
Hard Long
Green-Eyed
Girls Puzzle Thumbnail
Paper Required Hard
Ditloid
Deduction 5 Puzzle Thumbnail
Hard Exclusive
Escape
Room Puzzle Thumbnail
Paper Required Hard Exclusive
The Bouncing
Ball Puzzle Thumbnail
Hard
Mate
In 2 Puzzle Thumbnail
Hard
Ditloid
Deduction 6 Puzzle Thumbnail
Hard Exclusive
Fencing
Fields Puzzle Thumbnail
Paper Required Hard
Casualties
Of War Puzzle Thumbnail
Paper Required Hard
22
Coins Puzzle Thumbnail
Paper Required Hard
Big Open
Box Puzzle Thumbnail
Paper Required Hard
The Price
Of Apples Puzzle Thumbnail
Paper Required Hard
31
Dominoes Puzzle Thumbnail
Hard
Ditloid
Deduction 9 Puzzle Thumbnail
Hard Exclusive
Secret
Code Puzzle Thumbnail
Hard Exclusive
Encoded
Name Puzzle Thumbnail
Hard Exclusive
Hat
Logic Puzzle Thumbnail
Hard
Paper Required Paper Required Calculator Required Calculator Required Hard Hard Long Long Interactive Interactive Exclusive Exclusive