not sure which exactly you mean.
but if it is the one with the 2 blocks and many doors where you have to climb all up to get the 1 coin in the bottom right of the room, the answer is pretty straight forward, at least how I did it:
first off obviously push block on button to move forward.
Then go up to the other block and push it down to the bottom left (make sure it aint touching the wall though).
now push this block under the door.jump through the open door and go to the button, shoot the block on the bottom to destroy it.
nowblock should be stuck under door.from the right simply push the block through the door to the left, no worries, it ill only close once you and block have exited to the left side.
rest is easy. climb up to the coin, press the 10 second button, leave room.
for the 3 block thing getting the blocks is easy.
but literally the physis of the game and the enginee make it IMPOSSIBLE!
for collecting the blocks:the bottom most, directly in the room with the first button door, should be obviously, drop from cliff.
now for the one on the "middle floor" path:
when coming from the left as normal, you might think you gotta have the block be on the block cause you wouldnt make it in time to reach the door.
but that is actually only true if you push the block from the button to the door.
your own movement speed by itself is enough.
so push block right next to the door, activate button, run to the right with the door and block in front of it. push block through door.
later on drop said block down to the other room.
for the "upper floor" path:
not hard, jsut lots of running around. first of push block to the right as usual.
this time the horizontal "door" only stays open if the button is pressed, thats true.
nothing says only a block can pres buttons through.
so first push block unto the closed door, preferrably on the right most place.
press button. door will open, block fall on the platform below.
you cant get down there this way anymore, so gotta go this path to the left room and go back right via the lower path (the one from the "miidle floor" path above).
if you wondering how to get 9in that upper floor in the first place: theres places to smahs ground, you can create hole to fall nin from above.
so we gotta affirmed how you can get 3 block, 1 present in the bottom right most room, 2 can be found and let fallen down from above.
but now this room is the big issue which i cant solve cause fuck this enginge and physics.
first off if you push a block into the hole like you have to the block will stick out.
so you cant afterwards move blocks from the left over it to the right.
so next thought was to stack 3 block and push the whole stack over it, the bottom most block will fall into the hole, remaining 2 block stakc will move forward.well shit physics engine wont allow it! caus as soon as you havea 3 block stack formed around the area of the laddrr and try to move it by pushing the ottom msot block, it freezes.like you might see some block in the stakc jiggle due to physics colisions but the thing as a whole wont budge.
and it aint like moving more than 1 block aint possible.I tested it with 2 block stack, you can easily push the bottom most block and the whole stack will move as if it was one building.
I asusme 3 blocks jsut is either too much weight, so stuff gets stuck in the ground due to collisions or such stuff.
basically impossible to do due to engine limits, not game challenges :-(