%0 Journal Article %A Seth Chaiken %A Christopher R. H. Hanusa %A Thomas Zaslavsky %T A q-queens problem. VI. The bishops' period %J Ars Mathematica Contemporanea %D 2019 %P 549-561 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.1657.d75/ %R 10.26493/1855-3974.1657.d75 %G en %F 10_26493_1855_3974_1657_d75