Moshe Czerniak in South America, 1940s. Credit: Yochanan Afek.
From Ad Ha'ragli Ha'acharon ("Fighting to the Last Pawn") by Yochanan Afek, Horacio Volman, and Amatzia Avni (Israel: Gambit Press, 2000), p. 38:
"After losing a won game, one of Czerniak's young pupils told him: 'whoever invented this game was a big fool!'. 'I don't know if he was a fool' -- said Czerniak -- 'but he was certainly thoroughly evil.'"