Sequential-move matching pennies Their payoffs Normal-form representation Player 2 HH HT TH TT Player H -1 ,1 -1, 1 ,-1 1 1,-1 T 1,-1 -1， 1 1,-1 -1 18 Sequential-move matching pennies Player 2 HH HT TH TT Player 1 H -1 , 1 -1 , 1 1 , -1 1 , -1 T 1 , -1 -1 , 1 1 , -1 -1 , 1 18 ◼ Their payoffs ◼ Normal-form representation