Color Block Jam Levels 500–600: Trace Keys Before Blocks

Why trace keys early?

Keys and doors can control later access. If you move surrounding blocks without understanding the unlock path, you may fill the lane the key needs. A short dependency map reduces that risk.

What makes a good setup move?

It clears the key’s approach or creates a safe staging space without occupying the door route. If a move only produces a matching color but does not help the dependency, delay it.

How do you verify an unlock?

Check the visible door state and then identify the next newly available route. The key move is setup until the intended path is actually usable.