(これはピエロのPDF紹介でGJ!(^^ ) https://pdfs.semanticscholar.org/8514/a9f8b30546ea81739b9409132673276713d3.pdf The Mathematics of Coordinated Inference: A Study of Generalized Hat Problems (Developments in Mathematics) 2013 edition by Hardin, Christopher S., Taylor, Alan D. (2013) Hardcover Springer Verlag