Marble Sort Level 290 Walkthrough & Solution

Level 290 Board Overview: Double 16- Panel Lockout

The verified walkthrough identifies the opening board as Double 16- Panel Lockout. The first confirmed moves are: Open by selecting the white and cyan stones resting at the tray’s lower-left area and guiding them straight into the head-row white and cyan receivers. Then: Leave the Yellow, Red, and Orange marbles untouched, since none of your lower Boxes are ready for them yet, and never dump Red early. The next safe order is recorded below so the belt does not fill with bait.

The Trap in Marble Sort Level 290

• Opening bait: Focus on the bottom-most Mystery Boxes in both side columns to reveal the hidden marbles, hunting specifically for the Brown ones the front-right Box needs.
• Board order: The instant the Brown stones show up, push them down at once and empty that front receiver, which is the key to freeing the green and deep-blue receivers waiting right behind it.
• Belt discipline: Use only the first verified clears here; do not spend belt space on a color without an active receiver.

Marble Sort Level 290 Step-by-Step Walkthrough

Opening: follow the safe first clears

1. Open by selecting the white and cyan stones resting at the tray’s lower-left area and guiding them straight into the head-row white and cyan receivers.
2. Leave the Yellow, Red, and Orange marbles untouched, since none of your lower Boxes are ready for them yet, and never dump Red early.
3. Focus on the bottom-most Mystery Boxes in both side columns to reveal the hidden marbles, hunting specifically for the Brown ones the front-right Box needs.

Midgame: open the next receiver path

After the opening clears, let the next exposed groups move only when their receiver is ready.

4. The instant the Brown stones show up, push them down at once and empty that front receiver, which is the key to freeing the green and deep-blue receivers waiting right behind it.
5. Route the visible green stones over on the tray’s right edge into the fresh green receiver, then trade between matched rim colors and the next Mystery Box to grind down the 16 count.
6. At sixteen clears the plates melt away, uncovering a crowded middle pile of soft-pink, deep-blue, violet, and red, while the new head row offers cyan, green, and soft-pink receivers.

Cleanup: finish the remaining sequence

The final phase follows the remaining source order. Pause whenever the belt starts to fill.

7. Drop the soft-pink stones to empty the leading soft-pink receivers, but keep your deep-blue and violet middle stones until their specific receivers slide into the head slot.
8. In the cleanup, take the violet stones from the top-right area, keep red parked on the belt until the close, and use the leftover rim stones to top off the last cyan and brown receivers one color at a time.

Level 290 Tips Recap

• Focus on the bottom-most Mystery Boxes in both side columns to reveal the hidden marbles, hunting specifically for the Brown ones the front-right Box needs.
• At sixteen clears the plates melt away, uncovering a crowded middle pile of soft-pink, deep-blue, violet, and red, while the new head row offers cyan, green, and soft-pink receivers.
• In the cleanup, take the violet stones from the top-right area, keep red parked on the belt until the close, and use the leftover rim stones to top off the last cyan and brown receivers one color at a time.