Multistage Practice:
Consider the following simultaneous-move game that is played twice (the players observe the first-period outcome prior to the second period play):
a. Find all the pure-strategy subgame-perfect equilibria with no discounting (δ = 1). Be precise in defining history-contingent strategies for both players.
b. For each of the equilibria you found in (a), find the smallest discount factor that supports it.