(a) Find all subgame perfect equilibria in pure strategies (if any).
(b) Find all SPE where at least one of the players uses a mixed strategy (if any)

 

(8, 3) (4, 5) T N A A B (1, 9) S A\B 1 m U 9, 5 6, 6 2, 5 D 8, 0 5, 2 3, 3