How Hard is a Commercial Puzzle: the Eternity II Challenge

Carlos Ansótegui, Ramón Béjar, Cèsar Fernández, Carles Mateu. How Hard is a Commercial Puzzle: the Eternity II Challenge. In Teresa Alsinet, Josep Puyol-Gruart, Carme Torras, editors, Artificial Intelligence Research and Development, Proceedings of the 11th International Conference of the Catalan Association for Artificial Intelligence, CCIA 2008, October 22-24, 2008, Sant Martí d Empúries, Spain. Volume 184 of Frontiers in Artificial Intelligence and Applications, pages 99-108, IOS Press, 2008. [doi]