Is it possible to play a multiplayer game of Age Empires II The Kings online via LAN connection with someone who has Conquerers?

No, it's not possible to play Age of Empires II: The Kings online via LAN with someone who has Conquerers. Here's why:

* Different Versions: Age of Empires II: The Kings and Age of Empires II: Conquerors are different versions of the game with different codebases. They are not compatible with each other for multiplayer purposes.

* LAN Compatibility: While LAN play is possible for both versions, it only works if both players are using the same version.

Here are your options for playing online with someone who has a different version:

1. Both players upgrade to the same version: The most straightforward solution is for both players to purchase the same version of the game (either The Kings or Conquerors). This ensures compatibility and allows for online play.

2. Use a third-party service: There are third-party services like Voobly (https://www.voobly.com/) which offer a platform for playing older versions of Age of Empires II. However, these services typically require separate accounts and may have a learning curve.

Ultimately, to play online together, both players need to be using the same version of the game.