Lleida GraphMasters

"The GraphMasters workshop is a series of informal meetings of small groups of researchers working on various recent developments and open problems in Graph Theory. A particular GraphMasters meeting is usually concerned with just a small number of related open problems."
The official GraphMasters website.

GraphMasters Workshops:
  1st ITB Bandung, Indonesia, December 18-19, 2010.
  2nd Newcastle, Australia. February 7, 2012
  3rd ITB Bandung, Indonesia. July 18-19, 2012
  4th Lleida, Catalonia. September 27–October 2, 2012.
  5th Newcastle, Australia. December 15-17, 2012.
  6th Shanghai, China. January 21-22, 2013.
  7th Lleida, Catalonia. June 25-28, 2013.
  8th ITB Bandung, Indonesia. November 16-17, 2013.
  9th UNISMA Malang, Indonesia. June 7-8, 2014.
 10th Lleida, Catalonia. July 11-12, 2014.
 11th Newcastle, Australia. August 11-13, 2014.
 12th Pilsen, Czech Republic. November 1-2, 2014.
 13th Jemper, Indonesia. 25-26 September, 2015.
 14th Newcastle, Australia. January 30 - February 1, 2016.
 15th Xi'an, China, July 15-18, 2018.
 16th Lleida, Catalonia. November 29-30, 2018.
 17th Lleida, Catalonia. October 23-24, 2019.
 18th Lleida, Catalonia. October 10-12, 2022.
 19th Lleida, Catalonia. January 17-18, 2024.