Help with Link's Birthday: Level 4

[Dark Entity]

I can't seem to locate the pathway to the Triforce Piece in Level four of Link's Birthday. I have completed everything else in the level and know the room that the Triforce is in, but I can't find a way to it. Can anyone help me out?

[Mr. Z]

Ah yes.
Level 4, it's kinda hard finding the right way.
You can see it's not far from the start.
If you stand on the left part of the 2nd room from the entrance you have to use the Magic Boomerang to activate the secret, push the block, and you should be able to reach the boss' room.