pguardiario #22@todo_pro is right, the issue is analysis depth. All the puzzles need to be re-evaluated at higher depth and things like this will go away, but of course the cpu to do that costs money.
Toutatis #23#21 Nadastar, you are right - your 'day of perfect accuracy' was last Monday (http://en.lichess.org/v6pJ3M3u/black) :)