Is it possible to move the knight from a1 to h8, visiting every square of the chessboard once?

1. Which is worth more, a pound of $10 gold pieces or half a pound of $20 gold pieces?
2. A kazoo costs $1 plus half its price. How much does it cost?
3. On its March 1961 cover, MAD Magazine pointed out that 1961 was the first “upside-up” year — the first year that reads the same upside down — since 1881. What will be the next such year?

Andrea’s only timepiece is a clock that’s fixed to the wall. One day she forgets to wind it and it stops.

She travels across town to have dinner with a friend whose own clock is always correct. When she returns home, she makes a simple calculation and sets her own clock accurately.

How does she manage this without knowing the travel time between her house and her friend’s?

You’re given a choice between two gifts: $5 and $1,000. You can choose either, but a bystander will give you $1 million if you choose irrationally. Can you do it?

See also Kavka’s Toxin Puzzle.

What do these words have in common?

• ALMOND
• INCOME
• CANDID
• MEMORIAL
• CONCORDE
• GANYMEDE
• MANDARIN
• MAINLAND

A Christmas puzzle by J.C.J. Wainwright, from the American Chess Bulletin, December 1917.

White to mate in one move.

A woman visits a jewelry store and buys a ring for $100.

The next day she returns and asks to exchange it for another. She picks out one worth $200, thanks the jeweler and turns to go.

“Wait, miss,” he says. “That’s a $200 ring.”

“Yes,” she says. “I paid you $100 yesterday, and I’ve just given you a ring worth $100.”

And she trips lightly out of the store.

A man once married his widow’s sister.

How is this possible?

By Sam Loyd. In how few moves can White mate?

What do these words have in common?

• BEANED
• DOTTED
• GRANTED
• HERBAL
• HOMERED
• JACKAL
• LEEWARD
• ROYAL
• PATRON
• VICTIM
• VICTORIAN