Each elf will accept a trade: give him the object he wants (on the board) and receive the object he has in his hand.
Find the series of trades that allows you to obtain the final object from the initial one.
Drag and place the elves in the correct order.

!!! Start your series of trades on the 1st square on the left !!!

You do not need to use all the squares.

Use the ‘Check’ button to verify your answers.

Download a paper version instructions at the bottom of the page.

An idea from concours.castor-informatique.fr