September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums, Sereja and Commands
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays
February Challenge 2018
Broken Clock, Permutation and Palindrome, Car-pal Tunnel, Points Inside A Polygon, Chef and odd queries, Chef And The Patents, Chef And His Characters
May Challenge 2019 Division 2
Ada Pawns, Binary Movements, Where to Build the Roads, Reduce to One, Matches, Ada Rooks 2, Trees and Degrees
June Challenge 2019 Division 2
Sum and GCD, Intersecting Paths, Chef and Ingredients, Guddu on a Date, Lent Money, Chef and Proxy, Road Signs
December Challenge 2019 Division 2
Chefina and Ranges, Plus Multiply, Binary XOR, Easy Subsequence Selection, Sticky Notes, That Is My Score!, Addition
August Challenge 2020 Division 1
Smallest KMP, Chef and Wedding Arrangements
