Rubuta ci gaba don wannan sakin layi - A cikin aikinsa na dambe kafin yakin, wanda ya fara a 1928, ya lashe gasar zakarun Dutch Amateur National sau takwas. A matsayin babban matsayi a cikin aikinsa na mai son, ya lashe lambar zinare a Wasannin Maccabiah na 1935
, wanda aka gudanar a Tel Aviv, Isra'ila.