What is the highest scoring word anyone has ever played in scrabble?

Question

what were the bonus squares involved?(e.g. double/triple word/letter scores) and please give the word definition

Answer 1

The lucky player with the letters plays BENZOXYCAMPHORS across the top of the board, getting 1830 points, and presumably going on to win the game!

Answer 2

The record for a sanctioned club or tournament game (National Scrabble Association) is QUIXOTRY, covering two triple word scores and with the x on a double letter score. Playing all seven letters also earned a 50 point bonus

I don't recall the score, but I believe the player also scores a record for the most points in a game