Arrange the cleverly designed tiles (printed on glossy stiff cardboard) to create an astronomically large number of varied continuous landscapes--nearly 1.7 x 1024 possibilities according to the package!  Apparently it's a reproduction of a lithographed early 19th-century European puzzle.  This edition was published in Germany in 1977.The set originally contained 24 tiles, but tragically only 23 are now present, so I have to admit the set is incomplete.  Still, the one missing tile does not m...

From Jaap's Puzzle Page (with due credit and appreciation, https://www.jaapsch.net/puzzles/hexadec.htm):"The Hexadecimal Puzzle is the very first puzzle made by Binary Arts (now called Think Fun). Unlike all their later puzzles, this one is made of wood. It is closely related to their second puzzle, which was Spinout."It has a stationary base inside of which is a sliding carriage. On this sliding carriage are 8 switching bars. Each bar has two states, tilted up (0) or down (1). At the start they...