March Challenge 2017
Xenny and Alternating Tasks
May Challenge 2017
Chef and his daily routine
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction
January Challenge 2018
String Merging, Partition the numbers, Rectangle, Maximum Score, K-Concatenation
January Cook-Off 2018
Multiple of 3, Survive in ChocoLand
April Challenge 2018 Division 1
Highway Crossing, Count Good Prefixes
October Lunchtime 2018 Division 1
Coloring the Grid, Weird Question
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Lucky Number Game, Distinct Pairs, Fancy Quotes
India