Colony Flow Level 423 Answer Key, Walkthrough & Solution
Level 423 Video Walkthrough
Watch the full clear first, then use the written checkpoints below for each move. Want to practice first? Play Colony Flow free in your browser ↗
Level-specific solution
Colony Flow Level 423: brown monkey playing a yellow saxophone
Opening move: Clear the top right green section to open the board. Final move: Finish the final pieces to win the level.
Board identity
brown monkey playing a yellow saxophone
The recorded palette is brown, yellow, cream, blue, green. Use the screenshot to confirm the placement of these colors before starting the first move.
Step-by-step solution
Ordered moves for the brown monkey playing a yellow saxophone
Clear the top right green section to open the board
Begin clearing the light blue sky and the dark purple border
Attack the monkey fur with red blocks and face with tan blocks
Manage the connected chains of blocks carefully
Collect the keys to open the locked blocks in your tray
Clear the yellow banana and more of the background
Work through the massive four block connected chain
Reveal the hidden box and clean up the leftovers
Finish the final pieces to win the level
Second-source check
Opening and finish confirmed separately
Opening: Clear the top right green section to open the board. Finish: Finish the final pieces to win the level. Its 9board-specific moves are listed above; the picture name and palette come from the other reference page.
Sources reviewed: primary level guide and independent cross-check.

📋 Written practice guide (web version)board preview, color breakdown & loading order for the playable web level
Board Preview
What You're Up Against
Level 423 paints Robot with 182 tiles across 4 colors, split into 6 cubes in the tray. You have 5 waiting slots and two nest holes.
- Forest: 72 tiles → cubes of 36, 36
- Aqua: 70 tiles → cubes of 43, 27
- Cream: 22 tiles → cubes of 22
- Brown: 18 tiles → cubes of 18
⚠️ 1 hidden “?” cube in the tray.
Spoiler: what they hide
Forest 36
Step-by-Step Solution
This loading order was computed from the web level layout with a reachability-first strategy: always feed the ants colors they can actually reach, and never let all 5 slots fill with blocked colors. Tap hidden “?” cubes only when you have slot room to absorb a surprise color.
Load the cubes in this order, letting the ants work between picks. Unless noted, a cube's tiles are fully reachable when you send it.
- Send the Forest 36 cube.
- Send the Aqua 27 cube. Only ~18 of its 27 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Forest 36 cube. Only ~19 of its 36 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Aqua 43 cube. Only ~21 of its 43 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Cream 22 cube. Only ~14 of its 22 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Brown 18 cube. Only ~16 of its 18 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
Finish without boosters for 3 stars and bonus coins. If the board jams anyway, a Shuffle or Vacuum booster is the cheapest way out.