Screenshots
Step-by-step solution
- 1) Unblock the whole match by poking the Yellow block sitting in the narrow neck of the T-shaped tray and shoving it into the front-row Yellow receivers, finishing inside the pink/red Box on the far left.
- 2) Go after both Green clusters that sit in the middle column, dropping one into the Green Box at the right end of the front row and the second into the one sliding up right behind it.
- 3) Next pull the Dark Blue group out of the center column and let it land in the Dark Blue Box that rises into the third column.
- 4) Finish clearing the middle by sending down the top Pink group, which finally opens up the whole board.
- 5) After the lower boxes shift, pull the Dark Blue from the top of the left column into the new Dark Blue Box that appears at the front.
- 6) Hold off until the Orange boxes come forward, then feed the Orange groups from the tray's two wings into their waiting receivers.
- 7) Tap the right-side Red group only once a matching Box shows on the left, so the extra color never clogs the Conveyor Belt.
- 8) Finish by releasing the outer Light Blue, Pink, and Yellow pieces only when their boxes are visible, keeping three empty belt slots to juggle the final colors cleanly.
Level 421 Center Column Choke Point
sphere Sort Level 421 gives one one very specific headache right from the start.
this upper rack sits shaped exactly as one giant "T" using a massive bottleneck dead in the middle.
One single gold piece from marbles sits exactly in the narrow neck.
If one do not empty that gold block, the entire board remains paralyzed.
this dominant shades here sit yellow, green, pink, and dark blue.
the lower cases line onto neatly on four deep lanes, giving one immediate access to a few key colors.
Everything else sits a distraction designed to clog your screen.
Level 421 T-Shape Trap
this layout forces this eyes into this west and right sides of the Top Tray .
over this west, one hold one tall stack from dark blue, orange, pink, and yellow.
over this east, one stack of red, orange, and light blue.
this narrow neck holds one vertical column that dictates the whole match.
At this very lower, blocking the exit, is the yellow group.
Above that sits dark azure, plus atlast rose parked at this very top of the center stack.
one can't reach this side columns without jamming the Conveyor Belt .
one simply hold zero lower cases ready for those side colors early on.
Look closely at your starting lower Boxes .
this board identity here sits built around strict front-to-back sorting.
this head line gives one one reddish-pink Box on the far left.
This setup sits specifically designed into let one drill straight up that center column.
this rows directly past them hold more emerald, dark blue, and pink targets.
If one get distracted plus bring dark azure from this west side, that shall send down and sit on your Conveyor Belt .
One bad choose over some amber piece from this side walls, and your run is dead.
one should excavate this middle before one can even think about playing it horizontally.
Level 421 Level Overview
See the walkthrough above for the move order that clears this section.
Level 421 Drilling the Center Neck
this middle lane is the only safe path to start.
Getting greedy using this side lanes will instantly ruin your available space.
choose this lower gold group on the center neck of the Top Tray .
Send that straight into this ready yellow Boxes waiting in the front row.
Route that directly into this rose/red Box sitting on the far left.
Now target this two green groups in the center column.
one hold one emerald case waiting over this far east from this head line, plus another emerald Box sliding up right behind it.
the Conveyor track needs into stay empty for the upcoming shifts.
empty this dark azure group from the center column next.
Let that send into this newly revealed dark azure case that slides forward in the third column.
Finish drilling this middle by dropping the final top pink group.
Level 421 Managing the Side Columns
Once one hollow out the center, the board breathes.
this bottom cases shift drastically, revealing fresh targets that change the priority route entirely.
Look at the new front row of bottom Boxes .
this initial yellow and green targets are gone.
one shall now spot dark azure, amber, plus lighter rose Boxes sliding into the active slots.
bring this dark azure group from this top of the left column.
Route that into this fresh dark blue Box that just appeared.
one now hold access into this amber groups over both this west and right sides of the Top Tray .
Wait until this orange Boxes push to the front row.
choose this east-side crimson group just when one matching case reveals itself on the left side.
Pulling that early guarantees a clogged Conveyor Belt .
send this amber groups from both sides into this matching bottom Boxes .
This atlast clears out this middle layers of both side stacks.
Level 421 Surviving the Final Box Shift
this endgame gets incredibly messy if you rush.
this last spheres stranded over this upper rack sit light azure over this east plus one pile of pink and yellow on the left.
this board stress taps from this middle completely over to the remaining outer edges.
one want at least three empty slots into juggle the final colors safely.
Release this light blue groups from the right side.
this bottom cases shall show one light azure target sliding onto in the left-hand column.
send this last rose plus gold groups from this left side of the Top Tray .
Match them into this last remaining Boxes to finish the board.
Never empty one top corner just because it is clickable.
just release those last edge pieces when one physically spot the matching Box in the front row.
Patience here prevents one brutal last-second jam.
Frequently Asked Questions
What is the main trap to avoid in Level 421?
The biggest mistake is tapping colors that have no active bottom Box yet. They park on your Conveyor Belt and burn limited slots, so clear the shades that actually have receivers first.
How should I open Level 421?
Ignore the upper layers and aim at the bottom row of the Top Tray. Feed the colors that already have open boxes, then work upward once the lower lanes shift.
When does the midgame color change happen in Level 421?
After the opening boxes fall, the lower columns swap what they demand. Watch for the new shades and only pull blocks that match a box sitting at the front of a lower lane.
Any tip for finishing Level 421 clean?
Keep at least a few empty belt slots before poking mystery or hidden boxes. Feed a revealed color the moment it matches an active box, and fall back to visible marbles when the belt gets tight.