Transum's Tram Shunting Puzzles
These puzzles are Transum's versions of the shunting or switching puzzles made popular by train enthusiasts and puzzle solvers.
The objective is to move the trams, represented by coloured circles, onto their parking spots, represented by circles of the same colour but a dashed border. There are buttons to switch the points and make the tram move to the left, to the right, or to stop.
The green buttons control the green tram
Left Stop Right
There is a certain amount of tolerance at the parking spaces so the tram does not have to stop directly over the parking spot but it has to overlap most of the parking space.
Trams can go over parking spaces during the course of the action but you should be careful that two trams don't crash into each other. A crash will require the operation to start again from the beginning.
When all of the trams are parked in the correct places you will have the option of claiming a Transum virtual trophy. On the trophy will be recorded the time it took you to complete the shunting puzzle. You can try as often as you wish and look for time saving strategies so that you can improve on your personal best for each level.
If identifying the colours of the trams is difficult you can add colour names.
You might also like to look at our collection of Classic Shunting Puzzles.
There is are example solutions to these puzzles but they are only available to those who have a Transum Subscription.
Four Colour Theorem
This mathematical activity involves colouring in! That makes a change. Using the paint bucket tool can you flood fill the regions so that no two adjacent regions are the same colour?
HCF and LCM
Practise finding the highest common factor (H.C.F), sometimes called the greatest common divisor, and the lowest common multiple (L.C.M) of two numbers. So far this activity has been accessed 35623 times and 15542 Transum Trophies have been awarded for completing it.
As the objective is to complete the puzzle in the shortest amount of time you might be interested to know what the current fastest times are. Those people who have claimed a Transum Trophy for completing a puzzle have their times entered into our database. You can see the current leaders on our Best Shunting Times page.