What is the key lock in Level 23?

The red T's downward stem divides the center; clear the smaller purple, yellow, and white routes before using the central opening.

Why can two boxes of matching colors still behave differently?

Their footprints and arrow axes differ, so the entire shape must fit the same continuous lane.

Catdom 2: No Timer level guide

expert 9 colors

Dismantle the center interlock in color groups, then open the right-side and lower L-box routes before sending out the red T.

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Slide the purple T through its center lane to feed the purple cats and keep it horizontal for its exit.
Move the green horizontal box across the upper-left lane and confirm its capacity drops from 3 to 1.
Slide the green one-cell box through the opened left lane and clear it.
Move the yellow horizontal box into the lower center, feed the yellow cat, and confirm capacity 2 becomes 1.
Pull the white L up from lower-left with its long arm against the wall, feed the white group, and send it toward the left tray.
Slide the blue L through the lower-left opening only after white has moved, then feed the blue pair.
Route the cyan horizontal box along the bottom row to the two cyan cats and send it out.
Move the pink L through the right-center lane, then slide the orange 2-capacity vertical box down the right edge.
Align the red T with the top/center lane, feed the red cats including the lower-right group, and slide it out.
Confirm the last box has left and the game shows Well Done.

Colors in this level:

Red, Green, Purple, Pink, Orange, White, Yellow, Blue, Cyan

Do not try to move the blue L around the red T before the white L has opened the lower-left route.
Do not push the orange vertical box down while the pink L still occupies its right-hand lane.

Board notes 5 details

Layout: The irregular board has a raised upper-left corner, a right-side notch, and a stepped lower-right exit. Boxes are red T 4, green horizontal 3, green one-cell 1, purple T 4, pink L 3, orange vertical 2, white L 4, yellow horizontal 2, blue L 4, and cyan horizontal 2.
Goal: Feed each matching group and slide each footprint through an exit aligned with its white arrow.
Opening: Slide the purple T across the center, clear the green horizontal box along the upper-left lane, then reduce the yellow horizontal box from 2 to 1 and move the white L up from lower-left.
Danger Zone: The red T stem blocks the center. Pink and orange form a tight right pair, while white and blue interlock at lower-left; do not move blue before white or orange before pink.
Mechanics: A white tray with 3 cats sits at left and a red tray with 3 cats at lower-right. Matching color is not enough: the arrow axis and entire L/T footprint determine whether a slide is legal.

What is the key lock in Level 23?
The red T's downward stem divides the center; clear the smaller purple, yellow, and white routes before using the central opening.
Why can two boxes of matching colors still behave differently?
Their footprints and arrow axes differ, so the entire shape must fit the same continuous lane.