Katie's Arcade Party

For Katie's birthday, her dad took her and three friends to the arcade for an evening of fun and games. The kids spent the evening competing with each other for the highest scores on their favorite arcade games. Determine the full name of each friend, each friend's favorite arcade game, and the game on which each friend achieved the highest score.

1. Smithy's favorite game is not Ultimate Checkers. The kid whose last name is Harmie scored highest in Tetris. Katie's last name isn't Moose.

2. The favorite game of the kid who scored highest in Ultimate Chess was Battleship.

3. Demi's favorite wasn't RoboZapper. Katie's last name isn't Cratic.

4. Smithy scored highest in Twiddle. Billybob's favorite was Ultimate Checkers.

5. The kid who scored highest in Ultimate Chess wasn't Katie. The kid whose favorite game was Disco doesn't have a last name of Thorton.

6. RoboZapper was the favorite game of the kid whose last name is Moose. The kid whose last name is Cratic didn't get the high score in Pac-Man.