Informative radio prog

Just zis Guy said:

Of great importance to all followers of the nation's favourite game:

http://www.bbc.co.uk/radio4/comedy/pip/s1d8d/

Excellent. We listened to that at Christmas. The scene between Judi
Dench and Michael Gambon was a classic. Our Eleanor was getting quite
agitated towards the middle of the program.

- I still don't understand it. What are the rules?

- Listen carefully. It'll soon be clear.

--
Dave...

in message <[email hidden]>, Just zis Guy,

you know? (') said:

Of great importance to all followers of the nation's favourite game:

http://www.bbc.co.uk/radio4/comedy/pip/s1d8d/

Given that all of the rules of Mornington Crescent can be very easily
written down thus:

(v) Jvgu bar pbzcnavba, fgneg ng nal pubfra Ybaqba Haqretebhaq fgngvba.

(vv) Rnpu gnxr vg va gheaf gb qrpvqr juvpu genva gb trg ba, naq jurer gb
trg bss.

(vvv) Lbh pnaabg erivfvg nal fgngvba juvpu unf orra ivfvgrq orsber va gur
fnzr tnzr.

(vi) Ybfre vf gur crefba jub trgf bss ba gur Rqtrjner oenapu bs gur
Abegurea Yvar.

....wasting a whole half hour's programme on it seems more than mildly
excessive.

Notes:

[1] Those who have the sense to avoid the Great Wen like the plague can
easily play the game using a copy of the London Underground Map.

[2] If they ever build a northbound platform at Mornington Crescent the
game will be ruined for ever.

[3] Is anyone else childish enough to be amused by what ROT13 does to
roman numerals?

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

;; may contain traces of nuts, bolts or washers.

in message <[email hidden]>, Dave Kahn

(') said:

Just zis Guy said:

Of great importance to all followers of the nation's favourite game:

http://www.bbc.co.uk/radio4/comedy/pip/s1d8d/

Excellent. We listened to that at Christmas. The scene between Judi
Dench and Michael Gambon was a classic. Our Eleanor was getting quite
agitated towards the middle of the program.

- I still don't understand it. What are the rules?

- Listen carefully. It'll soon be clear.

For heaven's sake!

There is a graph comprising arcs and nodes. The graph as a whole has the
property that not all nodes can be reached from any given node by a
single arc (i.e it is not maximally connected). The number of arcs
terminating at any given node is variable. Arcs can on the whole and
with some exceptions be traversed bidirectionally. In such a graph there
must be one least connected node.

The game is played under perfect information and comprises two (or more)
players or teams selecting single arcs to traverse from the node reached
by the previously selected arc. After any node has been reached in this
way, it is pruned from the set of reachable nodes. The game continues
until one player or team selects an arc leading to the least connected
node.

What could be simpler?

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

;; I can't work yanks out......
;; Why do they frown upon sex yet relish violence?
;; Deep Fried Lettuce

Simon Brooke said:

There is a graph comprising arcs and nodes. The graph as a whole has the
property that not all nodes can be reached from any given node by a
single arc (i.e it is not maximally connected). The number of arcs
terminating at any given node is variable. Arcs can on the whole and
with some exceptions be traversed bidirectionally. In such a graph there
must be one least connected node.

The game is played under perfect information and comprises two (or more)
players or teams selecting single arcs

Not true. The inverse square rule allows various multi-arc transitions.
(its simple pythagoras. Sloan square + Leicester square = Trafalgar
square)

Quoted message said:

to traverse from the node reached
by the previously selected arc. After any node has been reached in this
way, it is pruned from the set of reachable nodes.

Also not true. A prime example is the Dollis Hill loop where Dollis
Hill has to be traversed on alternate turns until an appropriate node
is reached.

Quoted message said:

The game continues
until one player or team selects an arc leading to the least connected
node.

Also wrong. There are several least connected nodes, and the end point
of the game is not one of them (at least not during working hours)

I would suggest that you re-read the rules. They really are quite
simple.

...d

Quoted message said:

What could be simpler?

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

;; I can't work yanks out......
;; Why do they frown upon sex yet relish violence?
;; Deep Fried Lettuce

Simon Brooke said:

in message <[email hidden]>, Dave Kahn
([email hidden]'😉 wrote:

Quoted message said:

Quoted message said:

Excellent. We listened to that at Christmas. The scene between Judi
Dench and Michael Gambon was a classic. Our Eleanor was getting quite
agitated towards the middle of the program.

- I still don't understand it. What are the rules?

- Listen carefully. It'll soon be clear.

For heaven's sake!

There is a graph comprising arcs and nodes. The graph as a whole has the
property that ...

Well of course I started to explain all that but then she shouted, "I'm
thirteen years old, Dad! Duh!" at me. This stopped me in my tracks as I
couldn't recall immediately what effect this would have on play.

--
Dave...

"Simon Brooke" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

in message <[email hidden]>, Dave Kahn

(') said:

Just zis Guy said:

Of great importance to all followers of the nation's favourite game:

http://www.bbc.co.uk/radio4/comedy/pip/s1d8d/

Excellent. We listened to that at Christmas. The scene between Judi
Dench and Michael Gambon was a classic. Our Eleanor was getting quite
agitated towards the middle of the program.

- I still don't understand it. What are the rules?

- Listen carefully. It'll soon be clear.

For heaven's sake!

There is a graph comprising arcs and nodes. The graph as a whole has the
property that not all nodes can be reached from any given node by a
single arc (i.e it is not maximally connected). The number of arcs
terminating at any given node is variable. Arcs can on the whole and
with some exceptions be traversed bidirectionally. In such a graph there
must be one least connected node.

The game is played under perfect information and comprises two (or more)
players or teams selecting single arcs to traverse from the node reached
by the previously selected arc. After any node has been reached in this
way, it is pruned from the set of reachable nodes. The game continues
until one player or team selects an arc leading to the least connected
node.

What could be simpler?

Indeed, that's why international competitions forbid strategies based upon
A*.

Graham

in message <[email hidden]>, David

Martin (') said:

Quoted message said:

The game continues
until one player or team selects an arc leading to the least connected
node.

Also wrong. There are several least connected nodes, and the end point
of the game is not one of them (at least not during working hours)

A brief perusal shows that you are indeed correct; New Cross (7 arcs),
New Cross Gate (also 7), Shoreditch, Wapping, Rotherhithe and Surrey
Quays (all 8) are less connected. Anyone know when they were added to
the network?

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

The Conservative Party now has the support of a smaller proportion of
the electorate in Scotland than Sinn Fein have in Northern Ireland.

Simon Brooke said:

in message <[email hidden]>, David

Martin (') said:

Quoted message said:

The game continues
until one player or team selects an arc leading to the least connected
node.

Also wrong. There are several least connected nodes, and the end point
of the game is not one of them (at least not during working hours)

A brief perusal shows that you are indeed correct; New Cross (7 arcs),
New Cross Gate (also 7), Shoreditch, Wapping, Rotherhithe and Surrey
Quays (all 8) are less connected. Anyone know when they were added to
the network?

How are you counting arcs? I would expect to count them as
unidirectional edges so any end of line station has 2. Any station that
is one way also has 2. Or are you counting the number of discrete
destinations that can be reached without reaching a point at which one
may change lines?
In which case Wimbledon and Morden must surely figure, as would
Heathrow (Terminal 4 being minimally connected).

Of course you could play the Fibonacci variant at which point accurate
edge counting is essential, and dependent on whether you are clockwise
or anticlockwise.

Perusal? You are looking at the map? Shame on you..

...d

Simon Brooke said:

in message <[email hidden]>, David

Martin (') said:

Quoted message said:

The game continues
until one player or team selects an arc leading to the least connected
node.

Also wrong. There are several least connected nodes, and the end point
of the game is not one of them (at least not during working hours)

A brief perusal shows that you are indeed correct; New Cross (7 arcs),
New Cross Gate (also 7), Shoreditch, Wapping, Rotherhithe and Surrey
Quays (all 8) are less connected. Anyone know when they were added to
the network?

The latter stations are some of the oldest nodes and their history can be traced back several centuries, I am unsure of teh exact date, but I am sure someone can find it. Howver these nodes have recently become some of the most connected which the arival of North GReenwich and Canary Wharf.

By the way does anyone know how the stations on the DLR City airport extension have affected the diaplacement of the transverse nodes?

Bryan

in message <[email hidden]>, David

Martin (') said:

Simon Brooke said:

in message <[email hidden]>,

David Martin (') said:

>The game continues
> until one player or team selects an arc leading to the least
> connected node.

Also wrong. There are several least connected nodes, and the end
point of the game is not one of them (at least not during working
hours)

A brief perusal shows that you are indeed correct; New Cross (7 arcs),
New Cross Gate (also 7), Shoreditch, Wapping, Rotherhithe and Surrey
Quays (all 8) are less connected. Anyone know when they were added to
the network?

How are you counting arcs? I would expect to count them as
unidirectional edges so any end of line station has 2.

No. You can get to any normal station from any other station on the same
(branch) line, so the number of arcs is equal to (number of stations -
1). An end-of-line station has the same number as any other normal
station.

Quoted message said:

Any station that
is one way also has 2. Or are you counting the number of discrete
destinations that can be reached without reaching a point at which one
may change lines?
In which case Wimbledon and Morden must surely figure,

Why? You may be right but it doesn't look that way to me.

Quoted message said:

as would Heathrow (Terminal 4 being minimally connected).

Terminal 4, according to my map,
<URL:http://www.oxfordtube.com/assets/london/underground_map.jpg>
/isn't/ connected [bus service], but my map may be out of date.

Quoted message said:

Perusal? You are looking at the map? Shame on you..

That's how my mother used to play it when she was sheltering in the tube
stations during the blitz. People would gather round the map on the wall
to play. So I claim ancestral privilege.

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; "If I were a Microsoft Public Relations person, I would probably
;; be sobbing on a desk right now" -- Rob Miller, editor, /.

Simon Brooke said:

Terminal 4, according to my map,
<URL:http://www.oxfordtube.com/assets/london/underground_map.jpg>
/isn't/ connected [bus service], but my map may be out of date.

Isn't Terminal 4 temporarily "out of play" at the time of writing due
to construction work (or is that the other Heathrow tube station)?

David Belcher

Bryan said:

By the way does anyone know how the stations on the DLR City airport
extension have affected the diaplacement of the transverse nodes?

And in the not too distant future, East London Line extensions will
complicate the game still further! Anyone for "Fantasy Mornington
Crescent", working under the assumption that everything proposed in the
pre-war LT 'New Works' programme was actually built?

David Belcher

David E. Belcher said:

Anyone for "Fantasy Mornington
Crescent", working under the assumption that everything proposed in the
pre-war LT 'New Works' programme was actually built?

You're thinking of "Northen Heights" Rules, long a Sunday evening
favourite in the parlours of MC aficionados.

--
Tony

"The best way I know of to win an argument is to start by being in the
right."
- Lord Hailsham

"Tony Raven" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

David E. Belcher said:

Anyone for "Fantasy Mornington
Crescent", working under the assumption that everything proposed in the
pre-war LT 'New Works' programme was actually built?

You're thinking of "Northen Heights" Rules, long a Sunday evening
favourite in the parlours of MC aficionados.

Those are people with too much spare time (or poor bike lights). A nice
round of Victoria's Pride (everything pre-1902) gets the brain cells ticking
of a Monday morning.

--
Ambrose