That stupid "zero tolerance" rule is another example. If you show up even a little late to your game, they'll forfeit you! Since your opponent stats the clock at the director's command, if you show up five minutes late, you'll be five minutes behind on the clock. That should be enough of a penalty.
Fischer would have lost the WC match 12-0.
What you have written on the scoresheet does not serve as evidence of intention. Rather, it is the solely about the manner in which the piece is touched. If you grab the piece firmly and pick it up, clearly you intend to move it. If you bump it with your elbow as you reach across the board, clearly you had no intention of moving it. In between cases are why we have TD's and arbiters.
As for when you can write the move down:
Under FIDE rules you are permitted to write the move before you play it. 11.1 of the FIDE Laws of Chess clearly states, in part: "It is irrelevant whether the player first makes his move oand then records it, or vice versa."
Under USCF rules, the move must be played first. This is noted in 15A.
In the 5th edition of the official US Chess Federation's Official Rules of Chess on page 55 , rule 15A states that the player may first make the move , and then write it on the scoresheet , or vice versa .
Apparently its acceptable to do it either way . Perhaps the 6th edition changed this ? Did this change between the 4th and 5th editions ?