Loop Sort level guide
Loop Sort Level 4 Walkthrough
Loop Sort Level 4 introduces linked portals on a U-shaped route. Send yellow through the upper-left entry and lower-left exit first, then clear red and blue as their matching blocks are exposed.
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How to Solve Loop Sort Level 4 — Full Solution
- Map the inner stacks as left yellow-blue-red, middle yellow-red-blue, and right red-blue-yellow.
- Release the first yellow group into the upper lane.
- Let yellow enter the upper-left portal and emerge at the lower-left portal exit.
- Clear the exposed red group through the same linked endpoint pair.
- Route blue only after the red path has opened its matching blue blocks.
- Use the last portal exit to clear the final visible group and finish the board.
Colors in this level:
Yellow, Red, Blue
Common Mistakes to Avoid
- Expecting a cube at the far U bend instead of at the paired lower-left portal exit.
Quick Tips for Loop Sort Level 4 (spoiler-free)
- Memorize upper-left in, lower-left out before choosing the next colour.
- Finish the yellow jump before adding red or blue traffic.
- If the board feels stuck, look for the color with the cleanest path and use that to regain space.
Board notes 5 details
- Layout
- A U-shaped loop has linked portal endpoints at far upper-left and lower-left. Inside sit three vertical trucks: left yellow-blue-red, middle yellow-red-blue, and right red-blue-yellow from top to bottom.
- Goal
- Use the paired portal jump to complete the 0/8 board. Yellow visibly takes the first route; red and blue follow only when their matching blocks are exposed.
- Opening
- Release yellow into the upper path and watch it enter the upper-left portal and emerge from the lower-left endpoint instead of continuing around the bend.
- Danger Zone
- Planning the U as a continuous road is the trap. Every group that enters the upper-left portal instantly exits at the lower-left endpoint, changing the next arrival order.
- Mechanics
- The left endpoints are a linked portal pair, as the video tutorial states. They are neither trucks nor road blockers.
Frequently Asked Questions
Where do cubes go after the upper-left portal in Level 4?
The tutorial shows them jumping instantly to the lower-left portal endpoint, so plan the next colour from that exit.