Who's There Challenge

How well do you know coordinate systems? A well-known coordinate system is used for most of this puzzle, but a relatively new one (which doesn’t use numbers) is used to solve the final question. There’s a book cipher element to this puzzle too, which you will see in the position numbers below.

The puzzle

Complete the following fields.

Co-ordinates Position Person name Letter
51.50072, -0.12722  1,1
-19.26452, 146.81745 1,2
-33.92520, 18.42380  1,1
40.93522, -73.90260 1,1
51.50884, -0.13931 2,3
-32.05403,115.74161 1,7
-37.81983, 144.98156 2,1
51.5424, -0.1478 2,7
-35.28145, 149.14955 1,6
42.28875, 3.27819 1,1
45.42267, -75.69396 2,1
58.01858, 14.46269 2,1
53.47672, -2.23603 1,2
-41.28203, 174.77626 2,8
45.81180, 9.07935 1,4

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