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Here is a map of the newly discovered cities and
waterways on our nearest neighbor planet, Mars. Start at the city
marked with T, at the south pole, and see if you can spell a complete
English sentence by making a tour of all the cities, visiting each
city only once, and returning to the starting point.
When this puzzle originally appeared in a magazine, more than fifty
thousand readers reported "There is no possible way." Yet it is a very
simple puzzle.
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