This is a structured badminton session system for mixed-ability play. The page reads the current ability gap directly, then applies altered rules to the stronger side so the match can stay competitive without disguising what is happening.

Altered rules are shown plainly on the court card. That can mean a reduced target area, restricted shot types, or both. The stronger side still has to solve the game properly, but under narrower conditions that close the gap instead of pretending it is not there.

1. Game plan generation
   • Only the people marked as attended for that day are used.
   • The generator aims for fresh pairings and opposition before repeating the same combinations.
   • If there are more attendees than court space, sit-outs rotate instead of leaving the same people out repeatedly.
2. Altered rules on court
   • The stronger side may be limited to a reduced target area.
   • The stronger side may also lose access to specific shot types when the recorded deficit shows that is the correct adjustment.
   • The exact rule depends on the stored hardship pattern for that matchup rather than on one fixed order.
3. What each court card shows
   • Who is playing on Side 1 and Side 2.
   • Which side is under the altered rule.
   • The target area and any restricted shots.
   • The submitted result once that court has been saved and locked.
4. Results and carry-forward
   • Saved courts move into Finished Games when the full set is complete.
   • Ratings update from the recorded result.
   • The matchup memory keeps the relevant altered rule pressure for when that opposition appears again.