SIJJI JOSE; REMYA ABRAHAM. Influence of Chess and Sudoku on Cognitive Abilities of Secondary School Students. Issues and Ideas in Education, [S. l.], v. 7, n. 1, p. 27–34, 2019. DOI: 10.15415/iie.2019.71004. Disponível em: https://iie.chitkara.edu.in/index.php/iie/article/view/176. Acesso em: 1 oct. 2023.