An unexpected change that happens by chance

A fortunate occurrence that produces a different outcome

ईश्वर के द्वारा हुआ परिवर्तन

English Usage: Her fortuitous variation in strategy during the game surprised everyone.

Hindi Usage: उसके खेल के दौरान रणनीति में संयोगवश परिवर्तन ने सभी को चौंका दिया।