This is an 8 piece board burr interlocking puzzle and the goal is to assemble the 8 pieces into the shape as shown. The original L(8)tice had a single level 5.1.2 solution. see http://puzzlewillbeplayed.com/CombCross/Leighttice/.
L(8)tice-2 has an additional harder second solution; once assembled, the first and (slightly easier) solution requires a minimum of 5 moves to remove the first piece and the second (harder) solution requires 6 moves. Total number of moves to fully put together or take apart is 12 and 13 respectively. But don’t let the relatively few number of moves fool you-the puzzle is quite a handful in the hands.
L(8)tice-2 was inspired by Yoshiyuki Kotani’s E-Lattice, which is a 6 piece puzzle. In a way, L(8)tice-2 can be considered the bigger (and much more difficult) cousin of the E-Lattice. Solution provided upon request.