This book constitutes the proceedings of the Kiel Declarative Programming Days KDPD 2013
unifying the following conferences: the 20th International Conference on Applications of
Declarative Programming and Knowledge Management (INAP 2013) the 22nd International Workshop
on Functional and (Constraint) Logic Programming (WFLP 2013) and the 27th Workshop on Logic
Programming (WLP 2013) held in Kiel Germany in September 2013. The 15 papers presented were
carefully and reviewed and selected for inclusion in this book. They cover the following
topics: logic programming constraint problem solving programmable logic solvers functional
programming and constraint programming.