Marble Sort Level 239 — Walkthrough and Solution

Marble Sort Level 239 is a puzzle about unlocking a metal plate that hides half the board. Your initial task is to clear six bottom Boxes so the plate lifts, and after that the real challenge begins. The key is to focus exclusively on the colors that the front-row receivers demand at the start, and to avoid touching any other marbles until the board opens up.

At the beginning, the left side of the top tray holds a large plate with the number 6 on it, and next to that plate is a narrow vertical pile: Yellow sits on top, Light Blue below it, and Orange at the bottom. On the far right of the tray, there are several Hidden Boxes with question marks, and above them a 2x2 striped section that also hides colors. The bottom row of the tray displays a Pink box on the far left, next to it a Green box, then a vacant slot in the middle, and on the far right a Pink and a Red box. The lower part of the screen has four columns of Boxes, and the front line shows Green on the leftmost column, Pink beside it, Pink again, and Green on the rightmost column.

Marble Sort Level 239 Walkthrough

The front-row bottom Boxes demand Green, Pink, Pink, and Green from left to right. That means any marble of a different color is a hazard at this stage, because it will occupy a spot on the Conveyor Belt without being useful. The Red box sitting at the bottom right of the top tray is a decoy: if you drop it early, it will consume a slot and block the exact colors you need to progress. Similarly, the vertical stack of Yellow, Light Blue, and Orange is a trap, because no bottom Box is asking for those colors yet. Touching them will quickly jam your belt.

The board is designed to tempt you into pulling wrong colors, but you must resist. Your sole goal for the opening is to deliver Pink and Green marbles to the front-line receivers, and to keep your belt as empty as possible. Once you clear six Boxes, the plate will slide away, and the right side Hidden Boxes will reveal their contents, changing the board dramatically.

How to Beat Marble Sort Level 239 — Step-by-Step

Phase one: Feed the front row

1. Tap the visible Pink box on the bottom left of the top tray, and guide that marble to the front-left bottom receiver.
2. Tap the Green box next to it, and send that marble to the second receiver from the left.
3. Now tap the Pink box on the far right of the tray (the one that is not Red), and drop it into the third bottom receiver, which is also Pink.
4. Do not touch the Red box at all in this phase.
5. As you clear the front row, the next layer of bottom Boxes will push forward. You will see fresh Green and Red receivers appear. Continue to feed any Green or Red marbles that you can see in the exposed Hidden Boxes on the right side.
6. Keep a mental count of your clears. You need exactly six bottom Boxes emptied before the plate will open. Avoid pulling marbles just to see what they are; every slot on the belt is precious.

Phase two: Survive the plate reveal

1. When the sixth clear happens, the plate vanishes, and a new stack of Boxes appears on the left: Dark Blue at the top, Green below it, and White at the bottom. The middle section also opens up with White and Orange boxes.
2. The bottom receivers change immediately: the leftmost now wants Dark Blue, the next two are Brown and Orange, and the rightmost is Brown again.
3. Tap the Dark Blue box from the newly revealed left stack and feed it to the leftmost bottom receiver. This helps clear the board quickly.
4. Next, work on the middle section: tap the White and Orange boxes from the center, and match them with the middle bottom receivers that are asking for those colors.
5. Watch your belt pressure. If you accidentally pulled a Pink, Purple, or Yellow marble from a Hidden Box earlier, you need to find a bottom receiver that matches that color and clear it soon.
6. The striped 2x2 section on the top right will start showing Green and Yellow boxes. Only tap those when a Green or Yellow bottom receiver is in the front position, so you can send them directly.

Phase three: Clean up the stragglers

1. Now clear the Brown and Orange bottom receivers that are still active, using the remaining center stack of White and Orange.
2. Finally, address the vertical stack of Yellow, Light Blue, and Orange that you ignored at the start. Their matching bottom receivers are now available, so tap them in order: Yellow first, then Light Blue, then Orange.
3. Empty the last few Hidden Boxes from the top right. At this point, the board is mostly empty, so you can afford to let a couple of mismatched marbles sit on the belt while you wait for the correct receivers to cycle into position. Route each marble home and finish the level.

Tips & tricks

• Keep your Conveyor Belt as clear as possible in the opening phase; any non-Pink or Green marble is a liability.
• When the plate reveals, act quickly to clear the Dark Blue marbles from the left stack to free up space.
• Use the final phase to clear leftover stacks only when their matching receivers are active.

Common mistakes

• Tapping the Red box early, which clogs the belt and delays your six clears.
• Pulling from the hidden boxes without checking if the color matches a current receiver.
• Ignoring the belt pressure after the plate reveal, leading to a jam that is hard to recover from.

Marble Sort Level 239 FAQ

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