This is a wooden jigsaw puzzle of Eric Joyner's Great Robot Migration. The design by Matt Lyon has 480 unique, interlocking pieces with dozens of robotic-themed whimsies traveling around (plus a few non-robots as well).
We consider this one really hard. While there is a straight-edged border, many inner pieces have straight edges too (aka false edges), and the design is extremely complicated - good luck computing a solution!
Like all our puzzles, made with 1/4" thick wood and the pieces are laser-cut.
Packaged in our large pine wood box.
Made in USA (specifically, in Fremont, California).
11" by 21.25"