Remembering Sir Richard (Otto) Clarke KCB OBE (13-viii-1910 21-vi-1975)
A leading statistician who wrote about grading systems for chess and devised the Clarke Grading System for the British Chess Federation.
Father of Charles Clarke MP
Remembering Sir Richard (Otto) Clarke KCB OBE (13-viii-1910 21-vi-1975)
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Remembering Sir Richard (Otto) Clarke KCB OBE (13-viii-1910 21-vi-1975)
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