Rules: Line Expansion
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It is vital for each bus company to have a good route. The city
government demands that these routes overlap as little as
possible.
The first player to choose line expansion (so, the player on
square a) must add as many streets to his route as the current
maximum number of buses. The player on square b has to add one
less, the player on square c two less, etcetera. Note that
these players will have their turns in reverse order, the player on
square a being the last one to expand his line. To add a new street,
place a stick of your own colour on that street.
A line can only be expanded at one of its two ends
(“heads”). It is obligatory to expand a line in a
direction which is still devoid of lines. It is not allowed to build a
line parallel to somebody else’s line. There are two exceptions
to this rule.
1) When there are no empty streets at one of the ends, you can
expand your line parallel to someone else’s line until you
encounter an empty street. You may freely choose where to go in such a
situation, even if this means that three or more lines will go through
the same street. On the next crossing, you must turn into an empty
street, if it is present.
2) If the head of your own line ends on the same crossing as
someone else’s head, you may build a stretch of road parallel to
the other player’s line, even if there are still empty
streets. If two or more players already have lines along that stretch
of road, both (or all) must have a head at the crossing in question
for you to build parallel to them. In any case, at the next crossing
you will again have to select an empty street, if it is available.
Example: The
blue player at A must build in the direction of the arrow. There is a
line in both other streets, and there is only one road left
open. – Blue could also build at B. Here, he may choose any of
the three roads. Although the road straight ahead has been built on by
another player, it is allowed to build parallel to the
“head” of the other line. If Yellow builds a road there
first, this opportunity is lost. – The red player at C may
choose in which direction to build. As both roads are occupied, he is
free to use any. But he cannot back up along his own line. – At
D, Red has to move upwards along the red arrow. He cannot build
parallel to the yellow line, because the heads do not touch each
other. •
If a player builds a circle, the heads of his line remain at the
crossing where the circle has been closed. He or she can only build
from this crossing, in two different directions, as there are two
heads present. When you close a circle, you should take the action
stone from the action board and place it on the crossing to indicate
the location of the heads. In this way it is obvious for all players
from which point you may build in the next round.
The heads should always remain such that the complete route is a
line. So, a bus has to be able to travel from one head to the other
passing every street exactly once.
It is also not allowed to build a line parallel to one of your own
lines. Lines that have been put on the board can never be
demolished.
Example: The
black player lays a stick on the shaded spot, thus closing a
circle. He can do this in two ways. He can extend the line from A to
B, closing the circle at B. In that case, his following street must be
one of the streets marked b. If he does not connect one of them right
away, he must put the action stone involved at B, so that everyone can
see where Black must connect his next street. – Instead of
extending the line from A, Black could extend the line from B, closing
the circle at A. Now his following street must be one of the streets
marked a, and the action stone must be placed at A. •
Rule for Five Players
When playing with five, more sticks are used for line
expansions. Every player who chooses this action must add one
additional stick.
The first player to choose line expansion (so, the player on square
a) must add as many streets to his route as the current maximum
number of buses plus one. The player on square b has to
add exactly as many as the current maximum number of buses, the player
on square c one less, etcetera.
This rule is only applicable to line expansion.
