Build a Recovery Checkpoint in Color Block Jam

What belongs in a checkpoint?

Record the level, changed gate or destination, remaining shared lane, and next intended move. The checkpoint should describe state, not just a move number.

When should you create one?

Create one after an exit opens, a key is safely used, or a major blocker is cleared. These moments divide the route into understandable phases.

How do you use it after failure?

Return to the latest confirmed state and test one changed decision. Do not carry uncertain moves into a recovery attempt.