Mornington Crescent

[Pengi]

That's another mainline wild card used up, MM.

Lets open up the diagonals again with

Arnos Grove

[Mustermark]

Keeping to Charles Holden's architecture in the Streamline Moderne manner how about Southgate. Only one stop North on the Piccadilly line, which should invoke the 1930s Stopping Train parabola. Get out of that one with only a 1d coin and no oyster card.

[Jellicoe]

Before the demise of the East London Line, the Shadwell Paradox would easily have countered the attempted perpendicular loop but I suppose I shall now have to go with WHITECHAPEL.

[Pengi]

Great move Jellicoe,

Penge West

[PLD]

You Devious so-and-so...

I see you're trying the overground trap.

Simplest escape is to back flip from P-W to W-P so Wimbledon Park it is...

[Mustermark]

I told you she is a tricksy one!

Wimbledon Park is a shrewd move.  So from a single line in Zone 3 to a 3-line intersection in Zone 1, and with reported Good Service on all lines at this time, it will have to be Green Park  (With Jubilee-line connotations acknowledged and a Queen's Diamond paradox invoked).

[REGP]

I would like to try the Littleton (cornet) variation and go to the "Arabfly  dangle way"
Ray

[Mustermark]

Which doesn't fly until midday tomorrow, so it is imperative that we know at which end we are stranded?  Greenwich or Royal Docks? 

[Pengi]

I told you she is a tricksy one!

Look who's talking! Your Green Park move was decidedly underhand.

I'm sorry I haven't a clue where to go from 'Arabfly dangle way' so I'm going to have to flip a coin and go for

Greenwich (which does have the safety of the Meridian)

[Mustermark]

That's nice... keeping the Jubilee invokation alive there!  I had an owful feeling you were going to go DLR on us again!

From North Greewich with its Arabfly and O2 connection, I would like to propose flight capability with a different atomic connection and move us to

Goldhawk Rd

[Pengi]

Yes - you have found my Achilles Heel, I do like the DLR especially if you can get a seat at the front of the trains where the driver would be.

Imperial Wharf

[PLD]

Predictable...

Your Docklands Dodge is easily countered by a Tramlink Twist - which takes us to West Croydon.
(and don't forget thats on a one way loop when selecting your next move...)

[Mustermark]

I too loved the front seat on a DLR so you could see out and pretend you were driving.  Just like the old DMUs.

So, now we have had a DLR followed by an Overground i believe i can go to a particular intersection of the two lines and invoke the Shadwell Exclusion Principle. So the next two stations must be underground intersections (ref Stepney and Bascule, Morn. Cr. Locata Acta, 1954 Vol XVI p1389-1421, Elsevier, Ed. Stovold).

From the same volume, here are a couple of challenges set by Stovold in the Preface...

1. Which station has the largest number of lines intersecting?

2. What is the shortest distance that could be walked that would otherwise necessitate the greatest number of lines to be travelled to achieve the same journey by underground train?

It should be noted that Stovold gave no answers in the epilogue. Rather he imagined the system as an ever-changing beast capable of evolving and making the answers of the time obsolete.

[Pengi]

Tricky questions that will need some research

Embankment

[fisherman]

Hmmm.......

I shall invoke  the  Heisenburg  Uncertainty  principle.......

and  go  to Holborn......





or



Marble  Arch...