[chbot] Choc Fish Challenge #5

[Cass Jones]

Conveniently my example uses 8 wires, so it can be demonstrated with cat 5

On Mon, Sep 5, 2011 at 2:44 PM, Cass Jones <jones.cass at gmail.com> wrote:
> I may not have been clear enough, I've drawn instructions with
> diagrams, attached to this email.
>
> On Mon, Sep 5, 2011 at 2:14 PM, Synco Reynders <synco.reynders at gmail.com> wrote:
>> I was confused why you'd leave 2 unpaired wire in the first place? Yet
>> alone trying to find them.
>> /s
>>
>> On 5 September 2011 14:11, hamster <hamster at snap.net.nz> wrote:
>>> 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
>>>>
>>>>
>>>
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>>
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>