Puzzle 10: The Mouse's Pantry

ナゾ０１０　ネズミの食料庫
ネズミ君は壁の中の食料庫の奥に大事な
カギを隠していた。
でも、最近は打つそうな世の中だ。たまには
隠し場所を変えようと右のくぼみから
左のくぼみに移すことにした。
ところが、蓄えたチーズがたくさん
あって、なかなかうまく移動できない。
さあ、手伝ってあげてほしい。

Google Translate
Mr. Mouse was an important key to hide behind the wall in the food pantry.
But recently it is hit ever since. We decided to move once in a depression in the left pocket of the right to change the cache. However, there has regained a lot of cheese, can not move quite well. Now, I want to give you help.

Notes on Puzzle
A sliding box (or Klotski) puzzle, involving moving a key (2x1 block) through various blocks made of cheese.