This is a subsequent meeting in the series of former Cracow Conferences on Graph Theory held in Niedzica (1990), Zgorzelisko (1994), Kazimierz Dolny (1997), Czorsztyn (2002), Ustroń (2006), Zgorzelisko (2010) and Rytro (2014, 2018). This event is also exceptional, as it shall provide opportunity to celebrate 70th birthday of Mariusz Woźniak.