King, knave, ten, nine, with or without small ones.
Lead nine, even though you also hold the eight.
(a.) If nine wins the trick:—
With more than four in suit, lead ten after nine.
With only four in suit, lead knave after nine.
(b.) If nine forces queen, or both queen and ace:—
With more than five in suit, lead ten after nine.
With five in suit, lead knave after nine.
With only four in suit, lead king after nine.