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* [https://www.washingtontimes.com/news/2017/feb/14/joop-van-oosterom-and-raymond-smullyan-chess-lose/ In Joop van Oosterom and Raymond Smullyan, chess loses two colorful characters] by [https://www.washingtontimes.com/staff/david-r-sands/ David R. Sands], [https://en.wikipedia.org/wiki/The_Washington_Times Washington Times], February 14, 2017 <ref>[https://en.wikipedia.org/wiki/Joop_van_Oosterom Joop van Oosterom from Wikipedia]</ref>
==A Mathematical Mystery Tour==
* <span id="Video"></span>[https://vimeo.com/127338218 A Mathematical Mystery Tour] - [https://en.wikipedia.org/wiki/Horizon_%28BBC_TV_series%29 BBC Horizon Documentary] (1984), edited 1985 [https://en.wikipedia.org/wiki/Nova_(TV_series) Nova] version, [https://en.wikipedia.org/wiki/Vimeo Vimeo] Video
: featuring [[Mathematician#Dieudonne|Jean Dieudonné]], [[Mathematician#Atiyah|Michael Atiyah]], [[Mathematician#GWMoore|Greg Moore]], [[Mathematician#Erdos|Paul Erdős]], [[Mathematician#Thom|René Thom]], [[Raymond Smullyan]], and [https://en.wikipedia.org/wiki/Ivor_Grattan-Guinness Ivor Grattan-Guinness] - [[White Knight]] at 42:25
{{#evu:https://vimeo.com/127338218|alignment=left|valignment=top|dimensions="640"}}
