Tantalizer 427: Pub crawl
12 June 2019
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From New Scientist #978, 4th December 1975 [link]
Peter Pickle has drawn up this handy map of the twenty pubs in his town. On crawling nights he starts with a pint at The Swan and then moves off along the lines stopping at each pub he passes. (He may visit the same pub more than once).
He follows a formula on stepping out of The Swan: P, Q, R, Q, P, Q, P, S, S, P, S, P, Q, R, Q. In the formula P, Q, R and S stand for north, east, south and west (not necessarily in that order). The final Q brings him to The Bull (the red dot on the map) for the first and only time.
Can you mark the Swan on the map?