In statics, the block-stacking problem (sometimes known as The Leaning Tower of Lire (Johnson 1955), also the book-stacking problem, or a number of other similar terms) is a puzzle concerning the stacking of blocks at the edge of a table.
The block-stacking problem is the following puzzle:
identical rigid rectangular blocks in a stable stack on a table edge in such a way as to maximize the overhang.
Paterson et al. (2007) pr...