March Challenge 2017
Bear and Extra Number, Bandwidth of a matrix, Xenny and Alternating Tasks
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
September Challenge 2017
Little Chef and Sums, Minimum Good Permutation, Chef and Pick Digit
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
June Challenge 2018 Division 2
Binary Shuffle, Naive Chef
India