Beitr\"age zur Algebra und Geometrie Contributions to Algebra and Geometry Volume 36 (1995), No. 1 On-line Covering a Box by Cubes Marek Lassak We show that the cube of side $s$ in Euclidean $d$-space can be on-line covered by every sequence of cubes of sides at most 1 whose total volume is at least a number\ $V(s,d)$ of the order of magnitude $s^d$ with factor 1. MSC 1991: 52C17