If you know the enemy and know yourself, you need not fear the result of a hundred battles.
If you know yourself but not the enemy, for every victory gained you will also suffer a defeat.
If you know neither the enemy nor yourself, you will succumb in every battle.
New users after signing up achieve average accuracy of % (data based on total of users, of which first 45 answers are taken into account).
Advanced users, who have taken the time to solve at least 400 challenges has seen their accuracy increase to %
Total of challenges has been solved so far, with combined accuracy of %.
