What should you do first in Magic Sort Level 21?

Work the colored lower row first and leave the shell top row untouched until one finish is actually ready.

What usually goes wrong in Magic Sort Level 21?

The board wastes moves when a shell bottle is opened before the colored row has created any safe home bottle.

Magic Sort level guide

medium Target: 13 moves 5 colors

Magic Sort Level 21 places four shell bottles across the top and leaves the real work to a narrow colored row underneath.

Layout: A full top row of white shell bottles hangs above three short colored bottles on the left and two empty lanes on the lower right.
Goal: Shorten the colored center chain until one edge bottle can become a true finish instead of temporary parking.
Opening: Work the colored lower row first and leave the shell top row untouched until one finish is actually ready.
Danger Zone: The board wastes moves when a shell bottle is opened before the colored row has created any safe home bottle.
Mechanics: What makes this board different: A full top row of white shell bottles hangs above three short colored bottles on the left and two empty lanes on the lower right. Shorten the colored center chain until one edge bottle can become a true finish instead of temporary parking.

Board priority: Shorten the colored center chain until one edge bottle can become a true finish instead of temporary parking.
First-move rule: Work the colored lower row first and leave the shell top row untouched until one finish is actually ready.
Do not let this happen: Treating the shell row as the first source of progress.

Work the colored lower row first and leave the shell top row untouched until one finish is actually ready.
After the center chain shrinks, use a lower-right empty lane to close the first finished bottle and turn it into cleanup space.
Before opening a new lane, remember this target: Shorten the colored center chain until one edge bottle can become a true finish instead of temporary parking.
Finish only after this mistake is off the table: Treating the shell row as the first source of progress.

Colors in this level:

Red, Blue, Yellow, Green, Purple

What should you do first in Magic Sort Level 21?
Work the colored lower row first and leave the shell top row untouched until one finish is actually ready.
What usually goes wrong in Magic Sort Level 21?
The board wastes moves when a shell bottle is opened before the colored row has created any safe home bottle.