Author: Tom

Exercise Blue 05

Equipment
Pen	Notepaper

Time Limit	Area Required	Preparation Time
15 minutes	Small/ Indoor	2 minutes

Solution:
C
Reason:
Because D has NOT said anything, C knows that D can see one of each.
Thus C is NOT wearing the same as B .

Hats

Exercise Blue 05

Shown below are 4 men buried up to their necks in the ground. / They cannot move so can only look forward. / Between A and B is a brick wall which cannot be seen through. / They know that between them are 4 hats: 2 black and 2 white, but they do not know which colour they are wearing. / In order to avoid being shot one of them must call out to the executioner the colour of their hat. If they get it wrong, everyone will be shot. / They are not allowed to talk to each other and have 10 minutes to fathom it out.
After 1 minute: / Which one of them calls out? / Why is he 100% certain of the colour of his hat ?
There are no outside influences nor other ways of communicating. They cannot move and are buried in a straight line. So A & B can only see their respective sides of the brick wall, C can see B and D can see B & C.

Hats

OUTLINE - STAFF EYES ONLY

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CADET BRIEF

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