Marble Sort Level 203 — Walkthrough and Solution

Marble Sort Level 203 is a gridlock puzzle where the grey Hidden Boxes on the flanks are a decoy; the real solution is a precise sequence starting with Orange, then Dark Green, then White, and finally Light Green. Ignore the question marks until the front row is gone.

The Top Tray is cruciform, but the left and right arms are buried under grey Hidden Boxes. The front row has four exposed blocks: Dark Green, White, Orange, Light Green (left to right). Behind them, a second row shows Yellow, Dark Green, Dark Blue, Yellow. The center core holds the needed Pink and Red, but they are locked behind the front rows and two yellow "3" blocks.

Marble Sort Level 203 Walkthrough

Your four bottom Boxes demand, from left to right: Pink/Red, Orange, Pink/Red, Dark Green. The opening problem: no Pink or Red is visible in the front row. Only Orange and Dark Green are immediately usable.

The trap is Light Green: it looks safe but has no matching bottom Box at the start, so tapping it early jams your Conveyor Belt.

How to Beat Marble Sort Level 203 — Step-by-Step

Phase one: Clear the front row

1. Tap the textured Orange block (third from left in the front row). It drops into the second bottom Box, clearing the Orange demand.
2. That reveals a Light Pink bottom Box in the second column — but you don't need it yet.
3. Tap the textured Dark Green block (far left in the front row). It feeds the fourth bottom Box, which needed Dark Green.
4. Clearing that Dark Green reveals a White bottom Box in the fourth column.
5. Now tap the textured White block (second from left). It slides into the newly revealed White slot in the fourth column.
6. Stop. Do not touch the Light Green block yet. Leave it in place.

Phase two: Expose the second row

1. With three front blocks gone, the second row is accessible: Yellow on the left, Dark Blue in the middle, Yellow on the right.
2. The fourth bottom Box now demands Yellow. Tap the right-side Yellow block to clear it.
3. That reveals a Light Green demand in the fourth bottom Box.
4. Now tap the textured Light Green block you saved earlier. It clears the fourth column.
5. The center columns drop forward, and the grey Hidden Boxes on the flanks begin to reveal their colors as adjacent blocks disappear.

Phase three: Feed the center and finish

1. Now you can see the Red and Light Pink blocks in the center core. Route them into the first and third bottom Boxes, which have been waiting for Pink/Red.
2. Clearing the first column reveals a Light Green demand; clearing the third column reveals a Dark Green demand.
3. As the Hidden Boxes flip, prioritize grabbing Dark Green and Light Green to feed those outer stacks. If a Hidden Box shows Brown or Light Blue, leave it unless it blocks a crucial color.
4. Keep feeding from the center outward. Once the yellow numbered blocks shift away, the remaining flanks funnel down cleanly.

Tips & tricks

• Always clear the front row in the exact order: Orange, Dark Green, White, then Light Green — never deviate.
• Watch the Conveyor Belt capacity; don't drop a block you can't immediately use.
• When Hidden Boxes reveal a color you don't need, park them in the Top Tray until they become necessary.

Common mistakes

• Tapping Light Green too early — it clogs the belt with no target.
• Digging into grey Hidden Boxes before clearing the front row — this floods the belt with useless colors.
• Ignoring the bottom Box demands — you must clear left to right to reveal the next needed color.

Marble Sort Level 203 FAQ

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