Category Archives: Brainteasers

Spoiler Alert! These contain the answers to our monthly brainteasers! If you subscribe to our monthly brainteaser then we recommend you do NOT read these posts!

The Chessboard and Dominoes Puzzle

Imagine you have a standard 8×8 chessboard and 31 dominoes. Each domino can cover exactly...

The Two Envelopes Paradox

You’re given two indistinguishable envelopes, each containing money. One envelope contains twice as much money...

Old Blue Eyes

On a remote island live 100 people with blue eyes and 100 people with brown...

The Prisoners and the Switch

This one is super tough, so strap in! There are 100 prisoners in solitary cells....

The Rickety Bridge

In the dead of night, four people need to cross a rickety bridge. Unfortunately, they...

The King’s Deadly Vino

A king had received a gift of 100 bottles of wine but suspected one had...

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