Remember that everybody will be looking out for cheats so it is best to assume you will be caught out by one of the Queen’s Council and/or Eileen. If caught by the latter, you will never hear the end of it before you then face obliteration. Indeed it’s quite likely you’ll be pleading for the end to come. Eileen can go on at some length and does.
Eileen is not tolerant of excuses and likes honesty (especially in other people. For her it is a useful option. Hypocrisy happens to other people as far as she's concerned). She also takes the view if you cheat in a magical contest, you'll cheat in other areas of life so she'll have in the back of her mind a suitable spell to use on you when she catches you out. For her it is a question of when and not if. For you, it is a question of when and not if!