 Based on "G", construct a game, "PG", which has the same strategies, payoffs, and order of moves as "G" except "PG" is a game of perfect information (every player in PG is aware of the strategies chosen by those players who moved before).A strategy, "S", in "G" is a MAPNASH of G if and only if "S" is a Nash equilibrium of "G" and "S" is a subgame perfect equilibrium of "PG".As an example, consider a sequential version of Battle of the sexes (pictured above on the left).