Marble Sort Level 43 Walkthrough & Tunnel Solution

Level 43 Board Overview: The Hostage Center

Level 43 greets you with a fat pyramid of colors and one enormous temptation dead in the middle. White, Yellow, Light Pink, and a heavy spread of Greens dominate the tray, but the colors are not the puzzle. The puzzle is that the center of the board is being held hostage by a pair of Connected Boxes you must not touch.

The Top Tray is a staggered pyramid. Two Tunnels marked with a 3 sit up at the peak, hiding three marbles each. The playable front edge gives you exactly three targets: a White cluster on the far left, a Yellow cluster on the far right, and a Brown-Red Connected Box glued together in the center.

Below, your front receiver Boxes ask for Yellow, Light Pink, White, and White. Notice what is missing: no Brown, no Red. That center link is a trap wearing a reward costume.

The Trap in Marble Sort Level 43

The layout is built to funnel you into a bottleneck:

• Far left: the White block. Two White Boxes are already active in columns three and four. This is your safe opener.
• Center: the Brown-Red Connected Box. Tap it and both marbles dump onto your Conveyor Belt with nowhere to go. Your belt clogs instantly and the White and Yellow you still need to sort have no room to move.
• Far right: the Yellow block. A Yellow Box waits in column one. Also safe.
• Second row: Dark Green, Light Pink, Light Blue, and Purple wait behind the front line. The Light Pink is the painful one — column two has wanted Light Pink since the first second of the level, but it is sealed behind the Dark Green and the center link.

The board wants you to panic about the center and crack it open for access. Refuse. The flanks give you everything you need to progress, and every tap on the wings pushes the bottom queue closer to the Red Box that makes the center safe.

Marble Sort Level 43 Step-by-Step Walkthrough

Dismantle the front edge from the outside in. Every belt slot matters.

Opening: clear the flanks, ignore the middle

1. Tap the White block on the far left. The marbles drop straight into the two White Boxes in columns three and four.
2. Watch the queue shift: column three rotates a Yellow Box forward, column four shows Light Green.
3. Tap the Yellow block on the far right. It feeds the original Yellow Box in column one plus the fresh one in column three.
4. Hands off the Connected Box in the center. There is still no Red or Brown Box anywhere. Touching it now loses the run.

Mid-game: dig out the Light Pink, then crack the center

With both flanks gone, the second row opens. Purple is exposed on the right, Dark Green on the left, and your front Boxes now feature Light Pink, Purple, and Light Green.

5. Tap the Purple blocks on the right side of the tray into the Purple Boxes rotating through the lower columns.
6. Tap the Dark Green block on the left and park it on the Conveyor Belt. This is a deliberate hold — it finally exposes the Light Pink behind it.
7. Send the Light Pink down to clear the column two Box that has been waiting since the opening.
8. Keep clearing Greens and Light Blues as their Boxes cycle in.
9. The moment a Red Box slides into the front row, tap the Brown-Red Connected Box. The Red clears instantly; the Brown parks on the belt — and because you cleared the flanks first, you have the room to hold it until a Brown Box appears.

Endgame: pace the twin Tunnels

With the center broken, only the two Tunnels at the peak remain — six hidden marbles total.

10. Clear the blocks sitting directly beneath each Tunnel as soon as you can.
11. Tap one Tunnel to reveal its first color, match that color to a bottom Box, then tap it again for the next marble. Reveal, match, repeat.
12. Never fire both Tunnels at once. Without matching Boxes ready, they spit conflicting colors onto the belt at the same time and jam it. Alternate: pull from one, clear the color, then pull from the other. Keep that rhythm and the level ends cleanly.

Level 43 Tips Recap

• The center Connected Box is off-limits until a Red Box is active — breaking it early is the number one way this level kills runs.
• Parking the Dark Green on the belt is worth it: the Light Pink Box in column two waits from the very start.
• Treat the Tunnels like a metronome — one pull, one clear, never two at the same time.