Olympiads in Informatics
- CEOI 2003, problem Trip; solution description
- BOI 2008, problem Sorting; solution description
Ulm Local Contest 2005
Ulm Local Contest 2006
Ulm Local Contest 2007
Ulm Local Contest 2008
Ulm Local Contest 2009
NWERC 2009
- Problem G: Room assignments
NWERC 2010
- Problem H: Stock Prices
- Problem I: Telephone Network
GCPC 2011
- Problem D: Magic Star
NWERC 2011
- Problem C: Movie collection