[chbot] Choc Fish Challenge #5

[Synco Reynders]

When I tried Cass's solution, I ended up with the following which is
not the solution I was looking for although curious if it does work.
1) I tied battery across a pair (labeled 0,1 (may be swapped later))
and then paired up all the remaining wires. (note we don't number them
yet)
2) Walk to other end
3) Find battery pair... (enjoy spark method)
4) Connect Battery to any wire call that 2, then find paired, call 3
5) Now connect 3 to another unlabeled wire (while keeping all previous
connections), then find its pair. Repeat till no wire left.
6) Now connect the last wire to 0 and disconnect between 2 and 1.
7) Walk back
8) Now disconnect all pairs but remember which pairs were tied.
Disconnect one end of the battery and try and find the other. If you
can't use the other battery end. Which ever works is wire 0, (and the
highest wire number)
9) Work backwards, reconnecting up the pairs until they are all labeled.
/s

On 5 September 2011 13:36,  <m.beckett at amuri.net> wrote:
> Cass
> Not 100% sure if your explanantion fits, however its close to our
> solution.
>
> Ours is
> at the first end, connect the battery across two wires, label them 1A
> and 1B (doesn't matter which)
> Join the rema
>
> On Mon, 05 Sep 2011 13:11:06 +1200, Mark Atherton wrote:
>> Cass,
>>
>> I am not sure if your solution will work, but your reasoning is
>> thoroughly excellent.
>>
>> Well done.
>>
>> -Mark
>>
>> At 11:43 a.m. 5/09/2011, you wrote:
>>>I work out 2km:
>>>
>>>At the first end (end A) you connect all the wires together in pairs,
>>>leaving 2 unpaired as single conductors, then you attach the negative
>>>lead to one of the single wires and the positive to one of the pairs.
>>>label the negative wire as 4 and the other unpaired wire as 1, you
>>>then walk to the other end (end B). (1km so far)
>>>
>>>Now at end B you try all the wires with the bulb untill you find the
>>>three live wires, you should be able to determine the positive end
>>>from the negative by there being two positive wires and only one
>>>negative, label the negative wire 4,
>>>
>>>Now connect the negative wire to one of the other wires that isn't
>>>positive, you should be able to find which wire its paired with at
>>> end
>>>A by another wire in the group becoming negative, label the wire you
>>>connected to the negative as 5 and the lead the becomes negative as 6
>>>
>>>The only wire this wont work for is the unpaired wire you labeled at
>>>the other end that wasn't negative. when you find this wire label it
>>>as 1 to match the other end and connect it to one of the positive
>>>wires, label the two positive wires, label the one connected to wire
>>> 1
>>>as 2 and the other one as 3.
>>>
>>>Leaving each connection in place repeat that process of finding the
>>>pairs using the new negative lead until all of the wires are
>>> connected
>>>in series except the three now positive leads (1, 2 and 3). label
>>> each
>>>new wire you connect as one higher than the last newly found negative
>>>wire you labeled and each new negative you find as one higher than
>>>that, such that the wires are connected in order, 4 is connected to 5
>>>is connected to 6 is connected to 7 etc until all 120 are labeled at
>>>end B.
>>>
>>>Walk back to the end A (now having walked 2km)
>>>Now we can determine the order of the positive leads by disconnecting
>>>2 and 3 from each other and the positive terminal then by connecting
>>>the positive terminal to each of them in turn until you find which is
>>>connected to 1. label that wire as 2 and the other as 3. We can
>>> forget
>>>about these three wires now.
>>>
>>>Now hooking up one side of the tester bulb straight to the positive
>>>terminal of the battery and leaving the negative terminal attached to
>>>the original negative wire, 4, disconnect one pair at a time,
>>>reconnecting it before trying the next pair, until you find the pair
>>>that when you disconnect it, it leaves all the other pairs connected
>>>to the negative terminal. (you'll need some exposed conductor where
>>>you've bridged wires to test against). You can now label those two
>>>wires you have just disconnected, one will still be negative and the
>>>other wont, the one that isn't negative is wire 120, and the one that
>>>is still negative is 119.
>>>
>>>Now leaving the newly labeled pair disconnected, repeat this process
>>>untill you've found the next pair that leaves the all the pairs still
>>>connected to negative, disconnect that pair and label accordingly,
>>> one
>>>less than the last pair, with the wire that is still connected to
>>>negative as the lower number of the two.
>>>
>>>Repeat the whole process untill you've labelled all of the wires.
>>
>>
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