Marble Sort Level 339 Walkthrough Solution | Marble Sort 339

Marble Sort Level 339 Guide: The Locked Chain and Arrow Trap

Marble Sort Level 339 throws a massive roadblock at you right from the start. The board is shaped like a giant cross, but the entire center-left section is paralyzed by a vertical chain and a heavy Lock. You cannot just sort colors freely here. The board dictates exactly what you are allowed to touch, and taking the bait will instantly jam your Conveyor Belt.

The dominant colors you need to manage early are Pink, Light Green, Dark Green, and Orange. However, the real puzzle is figuring out how to break that center chain while navigating the inward-pointing Arrow Box clusters on the left and right wings. Let’s break down exactly how this board is rigged and how to tear it apart.

The Cross Pattern and Blocked Wings in Marble Sort Level 339

Look at the Top Tray layout. You have a distinct cross shape, but the mechanics actively fight against you.

The most dangerous obstacle is the massive chain running down the center-left column. It holds a Red, Orange, Green, and Orange box hostage under a Lock. Because this column is locked in place, it acts as a physical wall.

Now look at the left wing of the cross. You have a Blue and a Pink Arrow Box pointing to the right. They cannot move because the locked center column is blocking their path. Over on the right wing, you have a Green and a Red Arrow Box pointing to the left. They are similarly trapped.

The keys to open that center chain are scattered on the extreme outer edges of the cross. On the far left, you have a Red and a Yellow box carrying keys. On the far right, you have an Orange and a Brown box carrying keys. There is also an Orange key floating right next to the central blue Tunnel, which starts with a countdown of 3.

Your starting bottom Boxes dictate your opening moves. From left to right, you have Dark Green, Orange, Pink, and Light Green. Column two is especially dangerous. Under the active Orange Box, there is a Mystery Box, and directly under that is another bottom Box secured with a Lock. You have to clear the safe marbles first before you even think about touching the outer wings.

Marble Sort Level 339 Step-by-Step Walkthrough

If you just start tapping colors that look like matches, your Conveyor Belt will fill up with trapped arrow boxes. Follow this exact order to safely open the board.

Freeing the Center Cluster in Marble Sort Level 339

The opening sequence is actually handed to you, but you have to spot it at the bottom of the cross.

1. Go straight to the bottom-middle cluster of the Top Tray. You will see a Pink, a Light Green, and a Dark Green box sitting perfectly free.
2. Tap those three boxes. They perfectly match the Pink, Light Green, and Dark Green bottom Boxes currently waiting on the board.
3. Once those three are cleared, look right above where they used to be. You will see an accessible Orange box sitting next to a Yellow Arrow Box.
4. Drop that Orange box down to clear the Orange bottom Box in the second column.
5. Stop and look at your board. Clearing that Orange bottom Box reveals the Mystery Box underneath it. Do not pull any marbles from the left or right wings yet. Your Conveyor Belt needs to stay empty for the next phase.

Breaking the Chain and Arrow Wings in Marble Sort Level 339

Now the real work begins. Your entire goal in the midgame is to unlock that center chain so the trapped arrow boxes can slide out.

6. Hunt for the keys. Watch your newly revealed bottom Boxes. The moment a Red or Yellow bottom Box appears, tap the corresponding Key boxes on the far left edge of the cross.
7. Do the exact same for the right side. When Orange or Brown opens up below, grab the Key boxes from the far right edge.
8. Grab the floating Orange key located next to the central Tunnel as soon as an Orange bottom Box is active.
9. Once the final key is collected, the massive Lock shatters. The trapped center-left column (Red, Orange, Green, Orange) is finally free to play.
10. More importantly, the Arrow Box trap is disarmed. The Blue and Pink arrows on the left, and the Green and Red arrows on the right, now have empty space to move into. Drop them down only when their matching bottom Boxes are active.

Managing the Tunnels and Bottom Locks in Marble Sort Level 339

The endgame gets messy because the lower board shifts drastically.

11. Start chipping away at the blue Tunnel in the center. It requires 3 pulls to completely empty. Prioritize feeding the Tunnel whenever the Conveyor Belt is clear.
12. Pay close attention to the bottom section. As you clear the Mystery Box layers, you will uncover multiple bottom Boxes that have a Lock directly on them. For example, a locked Purple box and a locked Pink box will surface in the later stages.
13. Keep scanning the remaining Top Tray debris for the keys to open these lower locks. You will likely find them in the tall vertical stack on the top right (Pink, Yellow, Purple, Blue).
14. Never let your Conveyor Belt hold more than four mismatched marbles at this stage. If you dump a color hoping its bottom Box will unlock soon, the Mystery Box reveals will trap you. Play strictly front-to-back, matching only what the bottom rows currently demand to finish the level.