Car Sort: Color Puzzle Level 420 Solution Walkthrough

Read the staircase from the roof down

The roof feeders show red, green, yellow, blue, and purple. The exposed shelf staircase begins with cyan, then green, pink, and purple. Deeper rows add red, pale blue, orange, and yellow. The four cylinders open in sequence as complete shelf groups leave.

Use this route reference:

cyan top shelf → green shelf → pink shelf → purple shelf → red roof feeder → green roof feeder → yellow roof feeder → blue roof feeder → first cylinder reveal → pale-blue row → orange side feeder → red lower row → remaining cylinders → returning pink, green, purple, cyan, and yellow cleanup

Always clear the highest complete horizontal face. Skipping down the staircase places two colors on the same vertical road.

Strip the exposed staircase

Begin with cyan from the highest shelf. Green follows from the row below. Pink is next, then purple. These four groups remove the visible staircase and lower the first cylinder.

Wait after each row. The short shelves empty quickly, but their cars still need time to travel the entire vertical lane. Starting the next color when the face turns dark can leave markers stacked at the upper merge.

The opening checkpoint is four dark horizontal shelves, a reduced first cylinder, and complete roof stacks ready above. Do not use the small left feeder yet.

Clear the roof stacks in lane order

Red owns the nearest roof entrance and should leave first. Green follows, then yellow, then blue. If purple is the complete far-right stack, save it until blue clears the top bend.

These tall convoys provide the deliveries that retract the next cylinders. Finish every roof color in one pass. A partly cleared yellow stack is especially dangerous because it leaves yellow cars parked along the narrow road while blue tries to enter.

When the roof turns mostly dark, the staircase behind the first cylinders reveals pale blue and red rows. Let the last roof marker disappear before returning to those shelves.

Open the cylinder stack one row at a time

Pale blue is usually the first complete hidden row. Clear it. Orange from the small side feeder follows when the lower entrance is unobstructed. Red then leaves from the newly visible horizontal shelf.

Each delivery retracts another cylinder. Preserve every open cylinder bay as empty road space. Do not fill it with a partial returning color; the dark vertical area is what allows the next long convoy to merge.

If two shelves become visible at once, choose the higher one. The upper row owns the single top turn and must clear before the lower face can travel safely.

Finish the returning staircase

Pink, green, purple, cyan, and yellow reappear as solid horizontal groups. Work downward. Pink often clears first, green follows, and purple takes the middle. Cyan and yellow form the final lower pair.

The side orange garage may return as a complete column. Use it only at an empty-road checkpoint. Its lower entry is valuable for finishing but poor for recovery if another color is already descending.

Before completion, all four cylinders should be retracted and the right side should show dark shelves from top to bottom. One roof or side feeder may remain; send that single color and wait for the road markers to vanish.

Confirm each staircase handoff

There are three useful visual checks in the replay. At the first, the cyan and green horizontal shelves are dark but pink and purple still occupy the lower part of the staircase. This is the moment to finish those visible rows, not to open the rolled door on the left. At the second, the four roof stacks are still clearly separated into red, green, yellow, and blue columns while the road below them is mostly empty. Release those stacks individually and keep their order intact.

The third check comes after the numbered shutters begin to retract. Pink, green, and purple appear as full horizontal bars between the upper lane and the rolled cylinders. A bar is ready only when its entire face is visible from left to right. If the end of a row is still covered, the higher shutter has not finished opening, and tapping the exposed cars creates a partial convoy with nowhere to complete.

Pay attention to the small left-side feeder as well. It changes from a covered cylinder to a usable orange stack late in the route. Orange enters below every staircase shelf, so it must not share the vertical lane with a descending roof color. The safest signal is a completely dark left bend and a stationary road counter. After orange clears, return to the highest complete horizontal bar and continue the downward sweep.

Recovery on the vertical lane

A jam near the roof belongs to red, green, yellow, blue, purple, or the highest visible shelf. Finish that source. A jam below the cylinder stack belongs to pale blue, orange, red, cyan, or the lowest exposed row.

If a cylinder remains numbered, inspect the shelf immediately above it. One color has not completed. Opening another roof feeder cannot replace that local batch and usually blocks the lane.

When two colors share the vertical road, stop tapping and complete the leading color. Give it time to turn into its destination before adding the trailing batch. Restart only if the leading destination is still hidden behind a cylinder.

If orange was opened early, it can be recovered after the active roof convoy clears. Finish orange fully, then return to the highest shelf. Never add a third color as a bridge.

Level 420 is solved by descending twice: cyan-green-pink-purple strip the visible staircase, red-green-yellow-blue empty the roof, pale blue-orange-red open the cylinder stack, and the returning pink-green-purple-cyan-yellow groups finish the lower staircase. Keep the single vertical lane empty between rows and every numbered shutter becomes an easy checkpoint.