Nyora kupfuurira kweiyi ndima - Mukuenzanisa nemitambo mikuru yapfuura yakadai seLondon 1851 chess championship, London 1862 chess championship
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.