Puzzle 265
What is the minimum number of queens required on a chessboard such that all squares are attacked?
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Hint
Try this with a real board.
Answer
5 queens are required.
Puzzle 266
Can you find a valid sentence...
...which has two consecutive ANDs in it?
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Hint
Think of the phrase 'my bucket and spade'.
Answer
In the phrase 'my bucket and your spade', the gap between 'my' and 'and' is the same as the gap between 'and' and 'spade', namely one word.
Indeed, this logic can be continued to give the following sentence. In the first sentence the gap between 'and and' and 'and and' is seven words, et cetera.
Puzzle 267
What number comes next in this sequence:
42 1412 11141112 31143112 132114132112 {?}
Puzzle Copyright © Kevin Stone
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Hint
Say each number one digit at a time.
Answer
11131221141113122112.
Reasoning
Each term describes the previous term.
For example 42 = one four, one two = 1412.
And 1412 = one one, one four, one one, one two = 11141112.
Etc.
Puzzle 268
Only using the letters A I O S T, what is the longest word you can find?
You may use each letter more than once.
Puzzle Copyright © Kevin Stone
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Hint
The word begins with the letter T.
Answer
Tattooists.
Which has 10 letters.
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