Jud McCranie wrote:
When did the 3-fold repetition and 50-move rule come about? The
1954 Reinfeld book "How to be a winner at chess" gives perpetual
check, but not these two rules. Of course, with 3-fold rule, the
perpetual check rule is not needed (also you don't have to judge
whether or not a position is perpetual check). The 1970 book by
Harkness has these two rules, but not perpetual check. So did they
replace perpetual check between 1954 and 1970?

Winter dates threefold repetition to London 1883:

http://www.chesshistory.com/winter/w...61._Repetition

Not to be picky but I suspect that whether `they' replaced perpetual
check between 1954 and 1970 depends on who `they' a the USCF and
FIDE often have significantly different opinions about details such as
these.


Dave.

--
David Richerby Perforated Cheese (TM): it's like
www.chiark.greenend.org.uk/~davidr/ a brick of cheese but it's full
of holes!