Extremely HUGE storehouses of puzzles for $ale superb quality -- excellent prices -- easy page-surfing

(a.k.a.   Daughter-In-The-Box [Japanese name: hakoiri musume] -- Psychotease Puzzle -- Hua Rong Dao -- Khun Chang Khun Phaen -- Bricks -- Forget-me-not -- L'Ane Rouge Puzzle [French name: Red Donkey] -- Square Root )

There are two ways to end the solution, although both employ the same route and objective:
~ to transfer the large square at the top of the puzzle to the center space at the bottom ~

Most sliding block puzzles use a 'closed' case, but a few like
Psychotease -- Bricks -- Forget Me Not -- L'Ane Rouge
use an opening at the bottom to allow the large square to exit the frame, the donkey finally being able to relish his treat:
A Bunch Of Carrots !

(Of course, there can be no cheating by using the exit space for anything but the large square.)

You can play online here

start position
81     Finished ! ( He's got his carrots ! )