September Challenge 2016
Chef and digits of a number, Faded Palindromes
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
April Challenge 2017
Dish Of Life, Similar Dishes
May Challenge 2017
Chef and his daily routine, Courses in an university
June Challenge 2017
A Good Set, Xenny and Coin Rankings, Chef and the Feast
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, Partition the numbers
India