In SkillChallenges, you have just one chance to solve the test. Because you have to take it all in one go, we recommend you start the test only when you are have enough time available for a particular challenge. If you leave the test, the timer will continue to run in the background and after the time is up, sadly, you won’t be able to take the test again. But not to worry! There are always loads of other possibilities - you can develop your skills in code practise challenges and then try applying for some other SkillChallenges that interest you.