In "Culture" (2.2) when discussing possible games to play it is stated by Eddie that they do not currently possess a sausage. However later in the episode one of the chess pieces is in fact a sausage.
After Eddie has performed checkmate on Richie, Richie punches Eddie who falls over. Eddie gets back up and lifts the table up. The chess board, ashtray, bottle of brown sauce and other things on the table disappear completely in the next shot showing the table land on Richie's feet.
When Ritchie yells "Aah! Aah! Aah!" after the table lands on his toes, the shot zooms out. When Eddie hits him again, he is able to move away from the table. But we never see the table moving the final distance downwards towards the floor (implying he's pulled his feet out from under it), meaning his toes were never under the table at that point, only in the short scene beforehand.
Contrary to what Richie says "Harold" is in fact six letters.
Eddie says rather emphatically that they haven't got a sausage, but later he uses a sausage for the Bishop in the chess game.