Marble Sort Level 285 Walkthrough & Solution
Marble Sort Level 285 walkthrough: Double Lock and Key Trap. Follow the verified order and keep the conveyor clear for the final clears.
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Levels 460–460
Levels 487–487
Levels 500–500
Levels 517–517
Levels 550–550
Marble Sort Level 285 Walkthrough & Solution
Level 285 Board Overview: Double Lock and Key Trap

The verified walkthrough identifies the opening board as Double Lock and Key Trap. The first confirmed moves are: Start with the Top Tray’s Dark Blue marble on the left front, since it empties the Dark Blue receivers in Lane 1 and Lane 3 simultaneously. Then: Next clear Lane 4’s Red bottom box, tapping the Red marble resting on the second row of the tray above. The next safe order is recorded below so the belt does not fill with bait.
The Trap in Marble Sort Level 285
- Opening bait: Keep the front-right Orange untouched for now and instead empty the Lane 2 Yellow box, pulling the reachable Yellow marble sitting near the left edge of the Top Tray.
- Board order: Once that Yellow is gone the Orange box hiding behind it surfaces, so release the front-right Orange you have kept in reserve to fill that fresh receiver.
- Belt discipline: Use only the first verified clears here; do not spend belt space on a color without an active receiver.
Marble Sort Level 285 Step-by-Step Walkthrough
Opening: follow the safe first clears

- Start with the Top Tray’s Dark Blue marble on the left front, since it empties the Dark Blue receivers in Lane 1 and Lane 3 simultaneously.
- Next clear Lane 4’s Red bottom box, tapping the Red marble resting on the second row of the tray above.
- Keep the front-right Orange untouched for now and instead empty the Lane 2 Yellow box, pulling the reachable Yellow marble sitting near the left edge of the Top Tray.
Midgame: open the next receiver path
After the opening clears, let the next exposed groups move only when their receiver is ready.
- Once that Yellow is gone the Orange box hiding behind it surfaces, so release the front-right Orange you have kept in reserve to fill that fresh receiver.
- Match the second-row Purple to the Purple bottom box that now pops up in Lane 4, then send the outer Pink, Blue, and leftover Yellow anchors into their matching receivers as they cycle into view.
- With the outer flanking boxes all gone, both gold keys pull back and the dashed 2x2 center grid sheds its shield to become playable.
Cleanup: finish the remaining sequence
The final phase follows the remaining source order. Pause whenever the belt starts to fill.
- As the board opens up, the front line suddenly reads Green, Green, Yellow, and Dark Blue, so drag the Green marbles down from the upper-left corner to feed the new Green receivers before doing anything else.
- Once those Greens are cleared, only then drop the top-row Pink and Cyan, and wrap up by feeding the leftover White and Red into the last boxes to complete the level.

Level 285 Tips Recap
- Keep the front-right Orange untouched for now and instead empty the Lane 2 Yellow box, pulling the reachable Yellow marble sitting near the left edge of the Top Tray.
- With the outer flanking boxes all gone, both gold keys pull back and the dashed 2x2 center grid sheds its shield to become playable.
- Once those Greens are cleared, only then drop the top-row Pink and Cyan, and wrap up by feeding the leftover White and Red into the last boxes to complete the level.
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