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Latest comment: 15 years ago1 comment1 person in discussion
This is probably a mistake. In his writings Hirschel does not use 0-0 but "rochiret" (castles). The introduction of 0-0 / 0-0-0 is attributed instead, if I am not mistaken, to Johann Allgaier. --DaQuirin (talk) 16:14, 3 April 2009 (UTC)Reply
