ANSWERS: 1
  • In navigational rallies, the team has to work their route at the start of each stage. A herringbone is one example of the logic clue provided, representing turnings from start to finish of the section, drawn with the route in a straight line (the 'spine'), with the turnings not taken as smaller 'bones' coming off on either side. A more complex version is a circular herringbone, in which the start and end point are joined, and the team is not told where on the circle the start / end point is, or indeed the direction of rotation. Difficult to explain with a drawing!

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