%0 Journal Article %A V. K. Gavrilov %T About the task ``Knights of the King Arthur'' for developing multilevel tasks %J Matematičeskoe obrazovanie %D 2020 %P 24-27 %V 93 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MO_2020_93_1_a2/ %G ru %F MO_2020_93_1_a2