Convert a sequential move game into a simultaneous move game A statement from Ponssard and Zamir "Zero-sum sequential games with incomplete information" at the bottom of the first page reads


  AM's result is for zero-sum two-person games in which the two players move simultaneously. This includes of course games in which the moves are made sequentially: Player I moves first, player II is informed of player I's move and then makes his own move. (Such a game can be looked at as a simultaneous game after redefining the pure strategies of player II.)


I am curious about the last statement in parentheses. How does one "redefine" the strategies of the follower to make the game simultaneous move?
This is basically the idea that any extensive form game has a normal form representation.

http://www.sfu.ca/~shihenl/302/Strategies%20Memo.pdf