Independent Researcher with a wide range of interests. Author of some number theory and graph theory papers (hyperoperators, paths and trails covering any d-dimensional hypercubic lattice, primality&factorization, knight's tour problem, and so forth). Elected Genius of the Year 2014 – Europe by members of the World Genius Directory and by the World Intelligence Network Executive Committee, mainly for his fundamental contribution to the creation of the first dynamic IQ tests. Enthusiastic contributor for the OEIS (author of 130+ integer sequences).
ORCID iD: 0000-0002-6036-5541