Lulu's friends want to go for a tour by
train. To make it start, there must be exactly one carriage for
each goblin !
Click on the number of needed carriages
or type in the number by using the keyboard.
If you have put too many or not enough
carriages, the locomotive will start alone.
If you have put the right number of carriages, Lulu's friends
leave for a tour.
The maximum number which is studied can
be adjusted between 4 and 9 by using the - and +
Good luck !