“…This also means that many of the tests were created or inspired by various people, including (alphabetically) Miguel Abánades, Sergio Arbeo, Jiří Blažek, Francisco Botana, Jesús Escribano, Roman Hašek, Markus Hohen- [2,4,5,7,10,19,21] for some more references. An immediate remark that the database has entries of different difficulty levels from the computational point of view.…”