Treasure Island Puzzle

[color=#c51414]Open the task sheet:[/color][br][url=https://www.evernote.com/l/AAPZAYsI93FDyqPqbOfRDHlw6FtHThNJY4I]https://www.evernote.com/l/AAPZAYsI93FDyqPqbOfRDHlw6FtHThNJY4I[/url]
Find the treasure with a missing gallows.[br]These are links related to this problem:[br][list][br][*]https://www.ma.utexas.edu/users/gilbert/M333L/BinderDay2.pdf[br][br][/*][*]http://frink.machighway.com/~dynamicm/hunt.pdf[br][br][/*][*]http://jwilson.coe.uga.edu/EMAT6680Su07/McKee/6690/islandtreasure/it1.html[br][br][/*][*]http://books.google.com.hk/books?id=et6WMlkQlFcC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false[br][br][/*][*]https://www.academia.edu/5600848/Back_to_Treasure_Island[br][/*][/list]

Information: Treasure Island Puzzle