How to develop a multiplayer web based board game in .net?

 I want develop a multiplayer web based board game in .net (like chess) that can be played in browser. I have no problem with the logic of game. My only concern is how to make the game multiplyer(or multibrowser support). For example, suppose the game is hosted in IIS and two player is playing the game using their own browser. Now, any move given by player1 should be visible to player2 and vice-versa. How to achieve this type of functionality in .net?
Any help or suggestion is welcome.