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Emanuel Lasker's Manual of Chess is the most expressly philosophical chess book ever written" Shibut, M. Modern Chess Anarchy?. [2008-11-21]. (原始内容存档于2008-12-03).
web.archive.org
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Emanuel Lasker's Manual of Chess is the most expressly philosophical chess book ever written" Shibut, M. Modern Chess Anarchy?. [2008-11-21]. (原始内容存档于2008-12-03).
I matches 1880/99. La grande storia degli scacchi. [2008-05-29]. (原始内容存档于2008-05-24).
I matches 1900/14. La grande storia degli scacchi. [2008-05-29]. (原始内容存档于2008-03-07).
I matches 1915/29. La grande storia degli scacchi. [2008-05-29]. (原始内容存档于2007-11-12).