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Puzzle 17 


Place letters into the grid such that every row, column, and 2 x 2 block has letters (in any order) that form a common word. Each letter is only used once, and no letter is repeated in the rows / cols / blocks.

Letters allowed: C O L U M B U S

Note: this puzzle is not interactive, and the squares cannot be clicked.

Puzzle Copyright © Alan Stillson and Frank Longo

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Puzzle 18 


The same three-letter word has been removed from all of these words, leaving the letters below (which are still in the correct order).

What was the three-letter word?
loe ch she er vae

Puzzle Copyright © Kevin Stone

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Puzzle 19 


In which sport do winners move backwards and losers move forwards?

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Puzzle 20 


In each of these sentences, can you replace the missing number.

The number is written as a word (e.g. five, twenty-four, thirty-three), and each sentence is correct after the replacement.

This sentence contains ? X.
Slightly trickier, this sentence contains ? R's.
Even trickier, this sentence contains precisely ? E's.
This sentence has exactly ? letters.
This sentence, hopefully, contains ? letters, one hyphen, five commas, and four Y's.
To finish, if this sentence had a T removed, it would contain ? letters!

Puzzle Copyright © Kevin Stone

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