Tantipongpipat, Uthaipon. “A Combinatorial Approach to Ebert’s Hat Game With Many Colors”. The Electronic Journal of Combinatorics 21, no. 4 (November 13, 2014): #P4.33. Accessed April 12, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i4p33.