Tragic Opening Preparation Record: Frank Marshall...8 years of preparing the old school Marshall Gambit in the Ruy Lopez with Nf6 instead of the modern c6. Capablanca did not back down and refuted him over the board... the rest is history.
I think that the 8 years thing is a myth. Do you have any sources that can confirm it?
Greatest Number Of Castlings in a game : 3! http://timkr.home.xs4all.nl/records/
Wait a minute. Is this implying that a player can castle twice in one game, if his king and rooks end up in the right positions a second time? If so, that's a new one on me.
Yeah, I think theres' something wrong with that particular game. It's even fairly recent too (1973). Perhaps they are indeed illegal moves, but they were played and recorded on the scoresheet anyway because neither players realized they were. I'd be interested in knowing what their FIDE rating were, since that could shed some light to the situation.
Something similiar happened with Kramnik once, against Karpov I think. He didn't actualy castle twice, but he moved his king, moved it back and then asked the arbiter if he could castle in that position. The arbiter replied in the afirmative, so Kramnik happily went back to the board and castled.
16 decisive games in a row in a title match: Steinitz-Chigorin 1889.
Country with the most World Ranked #1 Players to go Insane: USA with 2.
It will surely take a while before there will be a shorter decisive game in a title match than 17 moves, as in Anand's win against Gelfand.
Paul Keres. Greatest number of wins over former WCC champions ( 9 ).
( Including a young R. Fischer in 1962 )
Longest online game: http://www.chess.com/echess/game.html?id=51161661
Record by chess master--but not in chess. I may have the highest number of perfect  games in bowling. 344
Were you a professional bowler at some point?
This GM beat 3 of the best & most famous chess World Champions the first game they played. [To be clear, Player A beat WC B the first time they faced off, later beat WC C, and later WC D in their first game ever as GMs.] Who was the GM? No googling plz.
To break the record, you'd have to beat 4 current/past univerally recognized World Champions [no Khalifmans!] the first time you met OTB and regular time controls [no blitz!]
And I'll go with Lasker's 27 years as WC for mine.
Winning eleven games in a title match (Alekhine, 1929).
The answer to the trivia Question is Akiba Rubinstein.
He crushed Lasker in their first meeting, and beat Alekhine and Capa in his first try. Amazing.
Also maybe one of the 1-2 players who could outplay Capa in an endgame.
I think Spassky may have beaten the record since it seems as if he won his first games against Smyslov, Tal, Fischer and Kasparov.
It is easy to beat 3 gms in 3 tries but to do what Spassky did-4 past/current world champs first time playing them is very difficult.
Unless you catch a future world champ at age of 10 or something...
Spassky was real good. Got neglected (historically) because of other factors.
He was '' natural '' chess-player akin to Capablanca.