When I first made this site I would update a rolling leaderboard of students who had completed the task – but the spreadsheet has grown to over 50,000 names – so it’s a little unwieldy!

Still, if you manage to complete the code levels well done – maybe you have what it takes to be a code breaker.  If you want a real challenge you might want to work your way up to Level 6 and Level 7 – very few students can do these (aimed at age 16+).

For those of you competing in the FOBISIA code breaking challenge I will contact registered schools with the details of the students who have completed each level.