OBSTACLE · color gate
Color shutter: a color-gated obstacle
Color Shutter is a color-gated obstacle introduced in Version 573 that opens or blocks passages based on color conditions.
Priority: mediumVerified: 2026-08-03Updated: 2026-08-03
MECHANIC RULES
How Ivy works
- Color Shutter was added in Block Out Version 573 as a colorful new challenge.
- The shutter's state depends on color conditions on the board, opening or closing a passage.
- You must satisfy the color condition before the gated route becomes usable.
DECISION PRIORITY
Strategy checks
- Identify which color the shutter expects before committing blocks nearby.
- Clear the required color first so the passage opens for the following moves.
- Re-check the shutter after each clear, because its state can change.
AVOID
Common mistakes
- Do not push blocks through a shutter that has not met its color condition.
- Do not assume the shutter stays open after one use if the condition resets.
- Do not block the color the shutter needs with pieces you cannot move.
RELATED LEVELS
Verified levels using this obstacle
0 verified links
No level-specific example is linked
The obstacle rules above remain complete without an inferred level relationship.