Find the treasure with a missing gibbet.
These are links related to this problem:
[list]
[*]https://www.ma.utexas.edu/users/gilbert/M333L/BinderDay2.pdf
http://frink.machighway.com/~dynamicm/hunt.pdf
http://jwilson.coe.uga.edu/EMAT6680Su07/McKee/6690/islandtreasure/it1.html
[url=http://books.google.com.hk/books?id=et6WMlkQlFcC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false ]Libeskind (2008)[/url] ([url=https://books.google.com.hk/books?id=et6WMlkQlFcC&printsec=frontcover&source=gbs_atb&hl=en#v=onepage&q=treasure&f=false]search 'treasure'[/url])
https://www.academia.edu/5600848/Back_to_Treasure_Island
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