Unusual Records in Chess

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PDubya

I'm curious about obscure records that must exist in chess, but are not easily to find (Masters Level games only). 

*Most moves by Kings in a single game

*Least pieces moved in a game lasting to time control (40 moves)

*Fastest game to be reduced to King v King (also, what is the minimum number of moves that this can take place)

What are some other records that would be interesting to know?