R.H. wrote:
Just posted a few mo

http://puzzlephotos.blogspot.com/

312: "The puzzle for this one is to determine how the top piece of this
stacked freestanding wood is able to entirely overhang the bottom piece"

A: Physics?

For each block draw a line upward from the upper right corner of the
side shown in the photo. If more than half of the mass of all the blocks
above lies to the left of the corner point, the stack will not topple.
This must be true for all blocks in the stack. If not, use glue ;-).

Greg