Marble Sort Level 146 — Walkthrough and Solution

Level 146 is the chained right tray trap. The Chained Right Tray Trap locks half the board, but the key to victory is to deliberately jam your own Conveyor Belt early to expose the Gold Key, then let matching Boxes clear the backlog.

Level146
DifficultyEasy
Priority routePink → Green
Watch forPink

▶ Video walkthrough of Marble Sort level 146, then the step-by-step below.

⚡ Quick clear

Pink → Green. Only drop a colour when its box is ready.

Marble Sort Level 146 presents a locked-board puzzle where the right side of the Top Tray is sealed by a heavy chain, forcing you to excavate the left side to find the Gold Key. The board initially offers only a few safe moves; your success depends on embracing temporary belt clutter to reach the key, then systematically clearing the resulting mess.

The Top Tray splits into two sections: the left block is six rows tall and three columns wide, while the right block is shorter and entirely inaccessible until the chain is broken. Within the left block, the Gold Key hides behind an Orange marble at the very top-left corner, buried beneath five layers: Green, Purple, Brown, Grey, then Green. Scattered Silver Keys also appear: one on a Brown marble mid-left, and three on the top row of the locked right tray, needed for future locked Boxes. Your starting bottom Boxes demand Orange, Pink, Orange, and Brown, but only Pink is initially exposed.

Marble Sort Level 146 Walkthrough

Your front-row bottom Boxes, from left to right, ask for Orange, Pink, Orange, and Brown. The leftmost Box wants Orange, the second wants Pink, the third wants Orange again, and the rightmost wants Brown. A single Pink marble sits exposed on the lower right of the left Top Tray, ready to fill the second Box immediately.

The core imbalance is that the Gold Key is locked behind a column that requires you to drop many non-matching marbles onto the belt, creating a jam if you don't plan your clearances. The belt can only hold a few items before the level fails, so you must time your drops and rely on upcoming Boxes to vacuum up the clutter.

How to Beat Marble Sort Level 146 — Step-by-Step

Phase one: Excavate the Gold Key

  1. Tap the Pink marble on the bottom right of the left Top Tray, sending it into the second Box to clear it immediately.
  2. Drop the bottom Green marble from the far-left column onto the Conveyor Belt, leaving it there.
  3. Drop the bottom Purple marble from the middle column onto the Conveyor Belt as well.
  4. Now an Orange marble is exposed in the middle column; tap it and guide it into the front-left Orange Box to clear that Box.
  5. Continue drilling up the far-left column: drop the Grey marble and then the Brown marble onto the belt, watching your capacity.
  6. Once the Green marble directly under the top-left corner is gone, tap that top Orange marble to collect the Gold Key, shattering the chain.

Phase two: Let the belt clear itself

  1. Do not touch the newly unlocked right Top Tray yet; it is a decoy that will jam your belt if you drop its marbles now.
  2. Watch as new bottom Boxes roll in, including Green and Purple Boxes; the Green and Purple marbles on your belt will automatically drop into them, clearing the belt.
  3. After the belt clears, drop exposed Blue and Red marbles from the right Top Tray to match any new Boxes that have appeared.
  4. Collect the Silver Key sitting on the Brown marble in the left tray, as locked Boxes will soon appear.

Phase three: Unlock the silver locks

  1. Target the top row of the right Top Tray: Orange, Blue, and Light Blue marbles each carry Silver Keys.
  2. Clear paths to those marbles, dropping underlying colors only when a matching Box is ready.
  3. Once you collect a Silver Key, a locked bottom Box opens; fill it promptly before moving on.
  4. Alternate between left and right trays, treating the board as a standard sorting puzzle now that it's fully open.
  5. Immediately clear any odd colors (like the early Grey) when their matching Box appears to keep the belt free.

Tips & tricks

  • Deliberately fill your belt early, but count your drops—only three or four items can sit there before you risk a jam.
  • When the belt is full, resist tapping anything until a matching Box appears to suck the clutter away.
  • Prioritize collecting Silver Keys as soon as they're reachable, because locked Boxes can stall your progress if you're unprepared.

Common mistakes

  • Tapping the right Top Tray immediately after breaking the chain, which overloads the belt and ends the level.
  • Dropping marbles onto the belt without a plan for clearing them, leading to a jam before the Gold Key is even found.
  • Ignoring the Silver Keys on the top row of the right tray, only to be blocked by locked Boxes later.

Marble Sort Level 146 FAQ

Why does my Conveyor Belt flood on Marble Sort Level 146?

The belt floods because you must drop several non-matching marbles to reach the Gold Key, and if you don't let the matching Boxes clear them quickly, the belt fills up and fails the level.

Which color do I clear first on Marble Sort Level 146?

Clear the Pink marble on the bottom right of the left Top Tray first, as it instantly fills an empty Box and gives you room to start digging.

How many moves does it take to clear Marble Sort Level 146?

There is no fixed move count, but a typical clear takes around 40 to 50 moves, depending on how efficiently you clear the belt and unlock the Silver Keys.

Do I need boosters to beat Marble Sort Level 146?

No, boosters are not required if you follow the step-by-step plan and manage your belt carefully; the level is beatable with pure sorting logic.

What happens if I tap the right tray too soon on Marble Sort Level 146?

If you tap the right tray too soon, the belt is still full from the early excavation, and the new marbles will instantly jam it, causing an immediate loss.

Get the Official Game

⬇ Download Marble Sort

Back to the full Marble Sort level list.