create windows for 2 player game

[cobolguy]

designing game that has 2 players. each player tries to guess the others answer. Player 1 types in a guess, hits a button(?) player 2's window comes up, showing player 1's guess. Then Player 2, etc. this goes back/forth until someone wins.

Not sure if this is even the right idea: 2 windows.

Thanks for any advice