Marble Sort Level 723 Walkthrough Solution | Marble Sort 723

Marble Sort Level 723 Guide: The Red Conveyor Trap & Double Locks

This board is an absolute trap. The dominant colors pushing you around are yellow, green, and a massive wave of red that tries to end your run in the midgame.

Right away, the Top Tray is split into two distinct sections. On the far left, you have an isolated vertical lane capped by a blue Tunnel with a "4" on it. Beneath that tunnel sits a stack of light blue and pink, ending with a shiny red marble holding a key at the very bottom. The main right-side cluster is a dense grid. Dead center, a rocket Booster sits on an orange marble. Tucked all the way in the top right corner is a yellow marble holding another key.

Your bottom Boxes dictate everything here. You have four columns. The front row gives you an unlocked yellow Box on the far left, two middle yellow Boxes locked down tight with the Lock and Key mechanic, and an unlocked green Box on the far right. The obstacle controlling this whole run is that double lock. You cannot access the rich inner columns until those keys are played, but the board is actively trying to trick you into clogging your Conveyor Belt before you can reach them.

The Double Lock Pattern in Marble Sort Level 723

Let’s tear down how this specific layout is designed to fail you.

Look at the bottom-most marbles available in the Top Tray. You have a red marble with a key on the left. It is totally exposed. It wants you to tap it. This is pure bait. Look at your bottom Boxes. There is no red Box in the front row. The second layer of boxes holds pink, orange, light green, and pink. Still no red. If you tap that red key marble early, it will sit on your Conveyor Belt permanently, eating a slot and pushing you closer to a game over.

The yellow key you actually need is in the worst possible spot. It sits in the top right, buried behind a wall of purple, green, and pink marbles.

Because the two middle bottom Boxes are locked yellow boxes, your entire early game is forced to the outside edges. The far-left yellow Box and the far-right green Box are your only safe opening plays. You have to pull the textured yellow and green marbles from the bottom of the main cluster to clear these outer boxes.

Once those outer boxes clear, the level shifts. The second layer of bottom Boxes reveals pink and orange. This opens up your routing, but it also creates a massive jam risk. The right side of your Conveyor Belt will get incredibly crowded as you try to dig vertically toward that top-right yellow key. Every piece of trash you pull to reach that key has to go somewhere.

Marble Sort Level 723 Step-by-Step Walkthrough

You need a strict release order here. Do not improvise the opening, or the board will lock up before you even reach the midgame.

Beating the Bait in Marble Sort Level 723

The first taps are all about clearing the outer edges without touching the traps.

1. Ignore the bottom-left red key. Pretend it does not exist. Touching it right now is a guaranteed way to lose a belt slot.
2. Clear the far-right green Box. Grab the green textured marble from the bottom right of the main cluster. Match it with the other exposed greens to clear that outer right box immediately.
3. Clear the far-left yellow Box. Grab the yellow textured marble at the bottom of the main cluster. Look for safe yellow matches to get this box out of the way.
4. Dig out the top-right yellow key. Now that the outer boxes are gone, the second layer reveals pink and orange boxes. Use these new targets to clear the pink and orange marbles sitting directly beneath the yellow key.
5. Drop the yellow key. Once the path is clear, drop the yellow key marble into an active yellow Box. Clearing the box with the key opens the lock on one of those middle boxes.

Unlocking the Midgame in Marble Sort Level 723

Once the first important clear happens, the entire middle of the board opens up.

6. Fill the newly unlocked middle boxes. With the middle yellow Boxes unlocked, pull the remaining yellow marbles from the center of the Top Tray.
7. Fire the center Booster. If you have trash colors blocking your way down the middle, tap the rocket Booster. It will clear a vertical path, giving you breathing room.
8. Watch the left Tunnel. The blue Tunnel on the far left holds four hidden marbles. Do not drop the light blue and pink marbles beneath it until your bottom Boxes are ready to catch them. Triggering the tunnel blindly will dump four random marbles onto your belt.
9. Activate the second key. Drop the red key from the bottom left only when a red Box finally appears in the middle layer. This will unlock any remaining locked boxes deeper in the stack.

Surviving the Red Conveyor Crunch in Marble Sort Level 723

The late board pressure on this level is brutal. Once the inner columns peel back, the bottom Boxes shift to dark blue, light blue, and red.

10. Manage the red marble flood. The board is hiding a massive cluster of red marbles near the back. When you reach this stage, the board will throw up to six red marbles at you at once.
11. Prioritize the inner red Boxes. The second a red Box cycles into the front row, fill it. If you let the red marbles stack up, they will completely fill the Conveyor Belt and end your run right at the finish line.
12. Hold one buffer slot. Never let your belt fill past six slots during the final clear. You need that last space to cycle the light blues and dark blues out of the way of the final red matches. Clean up the remaining blues to close out the board.