Boil the eggs till done. Cool, peel and chop into dices. Add into a large bowl.
Add the chopped cucumber, tomato, onion, coriander and mint leaves. Give it a good toss.
Whisk the yogurt with the black salt and pepper and add into the mixture.
Add the red chilli and give a good toss. Add the chutneys and mix.
Adjust seasoning, sprinkle chaat masala as required and dig in.