\documentclass{article} \usepackage{xsim} \usepackage{lipsum} \DeclareExerciseCollection[difficulty=easy]{easy} \DeclareExerciseCollection[difficulty=medium]{medium} \DeclareExerciseTagging{difficulty} \xsimsetup{collect} \begin{document} \begin{exercise}[use,print] outside before \end{exercise} \begin{exercise}[difficulty=easy,points=1] foo one \lipsum[4] \end{exercise} \begin{solution} foo one \lipsum[4] \end{solution} \begin{exercise}[difficulty=medium,points=1] foo two \lipsum[4] \end{exercise} \begin{solution} foo two \lipsum[4] \end{solution} \begin{exercise}[difficulty=easy,points=1] foo three \lipsum[4] \end{exercise} \begin{solution} foo three \lipsum[4] \end{solution} \section{Easy} \printcollection{easy} \section{Medium} \printcollection{medium} \printsolutions[difficulty=medium] \end{document}