Level 13

Level 13 URL: http://www.ouverture-facile.com/riddles/plain/paper.htm

Clue: from x to x

There are two Xs on the crossword. Place the red Xs over them. Assemble the jigsaw from there.

It reads: The answer to this riddle is the word 'particles'

Type particles into the box in the top right hand corner, and click OK.

Level 14 URL: http://www.ouverture-facile.com/riddles/particles/simple.html