Marble Sort Level 781 — Walkthrough and Solution

Marble Sort Level 781 is a logic puzzle where the board is shaped like a capital I, with a Top Tray, central columns, and bottom Boxes. The main challenge is the numbered central stacks that release multiple marbles at once; the trick is to manage their order so the belt never overflows.

The Top Tray holds some single-use marbles: Yellow, Purple, Light Blue, Red, and Orange. Below that, there are three vertical columns marked 1, 2, and 2, and beneath them two more columns marked 2 and 1. The bottom Boxes require a mix of Light Pink, Purple, Red, Yellow, and Blue, making the early moves critical.

Marble Sort Level 781 Walkthrough

The bottom row has several Boxes that need three marbles each. From left to right, the first Box wants three Light Pinks, the third Box wants three Reds, and the fourth Box wants three Light Pinks. The second Box will need other colors later.

The main trap is the dark blue column in the upper central stack. It releases two Dark Blue marbles, but there are only two Dark Blue marbles in the entire level, and they are both in that one stack. If you release them before both Dark Blue Boxes are ready, you'll have nowhere to put them and the belt will jam.

How to Beat Marble Sort Level 781 — Step-by-Step

Phase one: Free the Red

1. Tap the leftmost Light Pink pop-it square above the Conveyor Belt to drop one Light Pink marble.
2. Tap the 2 Light Pink column in the lower central stack to release two Light Pinks.
3. Guide all three Light Pinks into the far-left Box, clearing it and unlocking the 1 Red column behind.
4. Focus on the third Box from the left, which needs three Reds.
5. Tap the single Red square from the top-left of the Top Tray.
6. Tap the Red pop-it square above the Conveyor Belt.
7. Tap the now-accessible 1 Red column in the lower central stack.
8. Send the three Reds into the third Box, clearing it and revealing a Red Box underneath.

Phase two: Clear the Pinks

1. Now clear the far-right Box, which needs three Light Pinks.
2. Tap the remaining Light Pink pop-it square above the belt.
3. Tap the 2 Light Pink column in the upper central stack to release two Light Pinks.
4. Route all three Light Pinks into the far-right Box, clearing it.
5. Continue clearing other single-color Boxes using the Yellow, Purple, and Orange single marbles, and the remaining Red column, until you expose the Dark Blue Boxes at the bottom of columns 3 and 4.

Phase three: Handle the Dark Blues

1. Do not touch the 2 Dark Blue column until both Dark Blue Boxes are the top active Box in their columns.
2. Once both Dark Blue Boxes are ready, tap the 2 Dark Blue column in the upper central stack.
3. Send one Dark Blue marble to the Box in column 3 and the other to the Box in column 4.
4. Clear the remaining colors, including Light Blues and leftovers, to finish the level.

Tips & tricks

• Always check the bottom Boxes before releasing a multi-marble column to ensure you have a place for every marble.
• Use the single marbles from the Top Tray to clear boxes early, but save some for later if needed.
• When a column is blocked, it's often because you haven't cleared the required color yet; focus on the colors you can move.

Common mistakes

• Releasing the 2 Dark Blue column too early is the most common error, as it floods the belt.
• Ignoring the lower central stack's Light Pink release can trap the Red column, stalling progress.
• Clearing boxes in the wrong order can leave you with no place to put a multi-marble release.

Marble Sort Level 781 FAQ

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