O-Puzzle: Relative Elevation of Controls

 O-Puzzle: Relative Elevation of Controls  

Which of the controls in the picture is located higher than the others in the terrain?

map from a recent competition with a mass start in the city of Poznań (Poland). Organiser: OK Hades. 

https://www.livelox.com/Viewer/GrandPrix-2025-08-Dziewicza-Gora/Srednia3?classId=1090956&live=false&tab=player

Let’s break this task down step by step.

To begin, let’s mark the index contours of different elevation levels using different colors.

• The lowest contour in this section will be light blue.

• The next higher contour will be blue.

• The highest one here will be red.

  
  
  

Now, let’s start determining the relative elevation of each control, beginning with the lowest — in this case it is probably the easiest way to go.

• The lowest control is Control 7 — it is the only one located below the light blue contour.

• Then we have Control 4, Control 3, and Control 8, which are positioned between the light blue and blue contours.
  Among them:
  — Control 3 is closest to the light blue contour,
  — Control 4 is a bit higher,
  — and Control 8 is the highest of the three, almost touching the blue contour.

• Next, Control 2/6/10 is located in a depression and are the lowest from the red contour.

• Then comes Control 11, which lies two contour lines below the red one.

• After that, Control 9 sits about one and a half contour lines below the red contour.

• And finally, the highest control in this section is Control 5 — it is located just half a contour line below the red contour, which is the highest index contour in this area.

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Order from lowest to highest:
Control 7, 3, 4, 8, 2/6/10, 11, 9, 5.