Randori · about 15 minutes
Change the rules
Choose your own tools and approach. Your challenge is to deliver and verify a useful result under a new constraint.
Your mission
Develop a short, usable plan for a neighborhood event. Explain the audience, the first three actions, one uncertainty and how you would check whether the plan works. Do not invent permission, attendance or results.
Add a constraint
Choose one below, or let the button pick. You decide the stack and the method.
- Only a phone is available.
- The audience needs a plain-language version.
- The venue is unavailable and has not been replaced.
- The tool you planned to use is unavailable.
How to check yourself
- Does the result satisfy the chosen constraint?
- Are assumptions clearly separated from facts?
- Can another person follow the next steps and check the result?
- What would you change if your first tool or approach failed?
This is practice, not an automatically graded belt. Try Decision Replay or explore more katas.



