<prompt> Nyora kupfuurira kweiyi ndima - Mukuenzanisa nemitambo mikuru yapfuura yakadai seLondon 1851 chess championship, London 1862 chess championship  <response>: uye Paris 1867 mutambo wechess, paiva nezvinhu zviviri zvikuru zvitsva: chess clocks yakashandiswa kwenguva yokutanga zvinofamba 20 zvaifanira kuitwa paawa, uye kudhonza kwaiverengwa sehafu yemapoinzi. 