Two queens :)

3 days per move 7 days timebank

3 days per move 7 days timebank

All 20 opening moves: b3

All 20 opening moves: g4

All 20 opening moves: f3

Groups of two

7 days per move and 7 days timebank

3 days per move and 7 days timebank

3 days per move and 7 days timebank

3 days per move and 7 days timebank

3 days per move and 3 days timebank

RBHILL's choice

3 days per move only

Random groups - winners of each group progress

3 days per move and 3 days timebank

7 days per move and 7 days timebank

7 days per move and 7 days timebank

21 days per move and 28 days timebank