Marble Sort Level 645 Walkthrough Solution | Marble Sort 645

Marble Sort Level 645 Guide: The Green Cross Trap and Connected Box Jams

This board is incredibly deceptive. You drop into the level and immediately see a massive green cross dividing the Top Tray into four isolated quadrants. It looks neat and organized. It is not. The game is actively trying to bait you into filling your Conveyor Belt with garbage colors right out of the gate.

If you just start tapping the easily accessible colors in the middle, you will fail. The dominant early colors you actually need are Brown and Purple, but the board dangles Orange, Yellow, and Light Blue right over the funnel. Combine this with a nasty web of Connected Boxes hiding in the lower layers, and you have a recipe for a frustrating bottleneck. Let’s break down exactly how to dismantle this board without jamming your slots.

The Quad-Split Board Pattern in Marble Sort Level 645

You need to understand how this specific layout restricts your movement. The giant green cross in the Top Tray ruins your horizontal flexibility. You cannot easily reach the upper corners until you clear the bottom rows of the upper section.

Look at the very bottom row of the top marble area. It acts as a gatekeeper. From left to right, you have massive 9-marble tiles sitting there: Light Blue, Purple, Purple, Orange, Yellow, Purple, and Brown. These are the only marbles you can safely touch at the start.

Now look at your bottom Boxes. This is where the game dictates your route. You have four columns. Column 1 is entirely stacked with Purple boxes. Columns 2, 3, and 4 are all capped with Brown boxes.

The trap in Marble Sort Level 645 is blindingly obvious once you fall for it. Because the Orange and Yellow tiles are sitting dead center in the Top Tray, your brain wants to tap them to open up the middle of the board. That is pure bait. If you release the Orange, Yellow, or Light Blue marbles early, they have nowhere to go. The bottom Boxes only want Brown and Purple right now. Tapping the middle colors will instantly clog your Conveyor Belt, leaving you with zero space to juggle the marbles you actually need to advance.

Furthermore, you have to worry about the dual-color linked tiles sitting against the edges of the green cross. You will see tiles split in half—like Brown linked to Pink, or Orange linked to Pink. These drop sequentially, meaning you cannot grab the second color until the first one clears. Once you dig past the opening Brown and Purple boxes, you are going to expose a brutal series of Connected Boxes tied together with thick black lines.

Marble Sort Level 645 Step-by-Step Walkthrough

Order is everything here. You have to ignore the shiny center tiles and work the edges first to strip away the front line of boxes.

Surviving the Opening Bait in Marble Sort Level 645

The first five moves dictate whether you win or have to restart. Do not touch the Orange or Yellow tiles in the center.

1. Tap the single Brown marble tile on the far right of the Top Tray. This holds exactly enough marbles to clear the top layer of Brown boxes sitting on columns 2, 3, and 4.
2. Once the Brown boxes drop away, tap the three Purple marble tiles sitting on the bottom left and bottom right of the Top Tray.
3. These Purple marbles will flood into the massive stack of Purple boxes in column 1, and fill the newly exposed Purple boxes in the middle columns.
4. Leave the Light Blue, Orange, and Yellow gatekeeper tiles alone for now. Let them sit there until their specific matching Boxes rotate to the front row.

Untangling the Connected Boxes in Marble Sort Level 645

Clearing the initial Brown and Purple layers changes the entire identity of the level. The board opens up, but it immediately hits you with a new problem.

5. Look closely at the lower Boxes now. You will see black lines linking certain boxes together. These are Connected Boxes. You will spot an Orange box tied to a Pink box, and a Purple box tied to a Dark Blue box.
6. You cannot clear these independently. You must prepare the Conveyor Belt to handle both colors in the chain.
7. Start pulling from the dual-color linked tiles sitting next to the green cross. Grab the Brown/Pink linked tile only when you have a Pink bottom Box ready to receive the back half of that tile.
8. If you have an Orange Connected Box active, carefully release the central Orange tile you left behind in step 4. This will clear the Orange requirement and unlock the Pink box it is tied to.
9. Watch your Conveyor Belt capacity. If you pull a dual-color tile and the second color does not have an active Box, it will sit on the belt. Never let more than three mismatched marbles sit on the belt at this stage, or you will jam when the Dark Blue requirements drop.

Clearing the Top Quadrants in Marble Sort Level 645

Once the black-lined Connected Boxes are finally out of the way, the heavy pressure drops. The bottom area will start feeding you standard Yellow, Green, and Red boxes.

10. Now you can safely tap the Yellow and Light Blue tiles from the bottom of the Top Tray to clear out the remaining front-line boxes.
11. Reach into the deep top-left and top-right quadrants. You will find solid blocks of Red, Green, and Dark Blue up there.
12. Match these blocks to the final columns of bottom Boxes. Because you kept your belt clean during the Connected Box phase, you will have plenty of room to buffer the final few colors and finish the board.