I don't know what kind of puzzle, but
During construction in the numbered sequence:
Block 5 is the only piece which needs temporary support, because block 6 is required to support it.
Block 11 is the only piece which needs permanent support, because its C of G is to the right of the right-hand edge of block 10, and
block 12 tips it.
block 13 does not help.
block 14 tips it.
block 15 tips it.
block 16 does not help.
block 17 is not enough to balance blocks 12, 14, 15.
block 18 is still not enough to balance blocks 12, 14, 15.
block 19 does not help because it is centred over the right-hand edge of block 10, which is a fulcrum point.