Question 29
How could the two short planks and a saw be used to bridge the gap between the wall tops? Draw a possible arrangement. AI reconstruction for the checked reference: work only as a geometric paper model. These are added assumptions, not supplied by the source: two equal planks of length L and wall spacing D with D/2<L<D, compatible interlocking cuts at their meeting point, and secure supporting notches at the wall tops. The original drawing gives no dimensions or joint-strength data; do not build, cut or climb a real bridge from this puzzle.
