Name the objects
Use consistent names for the striker, queen and each player’s pieces. In a sketch, label colours with words as well as shading.
Watch one stroke
In practice, pause after everything has stopped and describe what happened. Do not move pieces while the group is still trying to understand the layout.
Build a question
A useful question includes a starting condition, an action and an observed result. Keep the question separate from the proposed answer.
Work from simple to complex
Begin with a sparse practice layout. Add another condition only when you can explain why it changes the question.