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22 February 2013 | Transport | By: Lindsey

Want To Walk The Route Of The One Stop Tube Puzzle?

Want To Walk The Route Of The One Stop Tube Puzzle?

Last week we put a puzzle to you: did you work out how to get round the tube map, taking in every single line for just one stop? Tom M did! And quite a few other commenters were close. Here's our solution, illustrated with almost accurate colour coding:

Note, you could swap Piccadilly Circus for Covent Garden and Moorgate for Aldgate with no consequence; and you could obviously do it in the opposite order.

To add our own idiosyncractic contribution to the Tube 150 celebrations, we're going to walk this route on Easter Monday. Want to join us?

It's about 15km or 9.5 miles — which is much shorter than our epic Olympic walk last year. We'll get photos at every stop, paying tribute to each line along the way. There will tube themed things to entertain us, we'll stop for refreshment at appropriate places and regale each other with tube tales. We might even compile a list of our favourite interviewees who've answered the question "Have you ever been sick on the tube" for Londonist. Heck, if Ben Norum brings some of his home-infused spirits along, we all might be sick on the tube.

Here's the route mapped. To join us on Monday 1 April, leave a comment or join the Facebook event.


View Londonist: One Stop Tube Wall in a larger map

Many thanks to John Wilkes for the puzzle and mapping and Ben Norum for walk enthusiasm.

Photo by Edward Kimber via the Londonist Flickrpool.  

Lindsey

Article by Lindsey | 3,291 articles | View Profile

Dr. C.

Yeah, I'd love to join in.

David

I'm in.

Amy

This is SO COOL.

Graeme

Yes, please

Richard J.

Well done, Tom M! But when the puzzle was set last week, it was alleged that "there is one possible route around the Underground [map] taking in every single line for just one stop", implying that there was a single correct answer (apart from the start and end variations).

This is not true. On 14 Feb, "Basil Jet" (not me) on the newsgroup uk.transport.london came up with this solution:
" start at Bond Street: c v p b n o j w dlr e d h m "

(I like this because the answer contains another puzzle - work out what the line letters mean and which direction you move in.)
It is essentially Tom's answer in reverse, until you get to Waterloo:

Moogate to Waterloo - as Tom's answer, then ...
Waterloo - Jubilee - Westminster
Westminster - Circle - Embankment
Embankment - Northern - Charing Cross
Charing Cross - Bakerloo - Piccadilly Circus
Piccadilly Circus - Piccadilly - Green Park
Green Park - Victoria - Oxford Circus
Oxford Circus - Central - Bond Street (or Tottenham Court Road)

Taking the Tottenham Court Road option, this route includes 4 segments and 2 stations [edit: 1 added, 1 omitted] that are different from Tom's and therefore proves that there isn't a unique solution. Are there any more, I wonder?

Bruin

wow this is like the real Mornington Crescent!

Yangchen Lin

Let me know (linyangchen at gmail.com) if you guys fancy dropping in on the London Underground Photo Exhibition a stone's throw from Embankment station - I'll be delighted to give a guided tour. :) Website with map: www.linyangchen.com/tube150