In conversation and as a lecturer, teacher or writer of chess, his abilities were widely acknowledged, particularly in Russia and France where he contributed regular articles and columns to magazines and newspapers.
Como conferenciante, profesor, ou escritor sobre xadrez, as súas capacidades foron recoñecidas universalmente, particularmente en Rusia e Francia, onde tamén contribuíu regularmente sobre o tema xadrecístico en artigos e columnas de xornais.