[chbot] Choc Fish Challenge #5

[hamster]

Humm - very cunning.

> identify the unpaired wires with a lamp that illuminates

That will take on average over 4800 tests.... maybe an hour? 

I would be interested in knowing is the quickest way assuming that each
test takes a second, and a 1km walk takes 10 minutes...

Mike


On Mon, 05 Sep 2011 13:59:38 +1200, m.beckett at amuri.net wrote:
> gUYS
> Sorry hit some key combination and it went not even close to finished.
> 
> Our solution is (2km) :-
> 
> At the start end, hook up the battery to two wires,
> Pair/join the remaining wires so you end up with 59 pairs and two 
> singles.
> 
> Travel to the other end (1km) and identify the unpaired wires with a 
> lamp that illuminates.
> Label one end of the single combination as 1B and connect this to a 
> wire, label this as 2A, then find the other pair, label as 2B.
> Join 2B onto another wire, label as 3A, find the other pair and label 
> as 3B....etc until 60B.
> 
> Travel to the start (2km) and connect the lamp to either the positive 
> or negative and try all the pairs.
> If you get the lamp to light, you can identify the battery end as 1A, 
> the other battery connection as 1B.
> 
> Connect one end of the lamp to the 1A wire, and break one pair.
> See how many pairs still light the the lamp, add 2 to this and you have 
> identified the A leg of the pair, with the other of the pair being B 
> leg.
> 
> If you work through the pairs, you will identify all 60 Pairs, with 
> only 2km.
> 
> 
> Cheers
> Mark
> 
>