June Challenge 2019 Division 2
Chef and Proxy, Road Signs, Guddu on a Date, Lent Money
July Challenge 2019 Division 2
Parity Again, Codechef War, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Guddu and his Mother, Encoding, Dilemma, Football, Distribute Apples, Zombie and the Caves
April Challenge 2020 Division 1
Squared Subsequences, Leaked Answers (Challenge), Ready Bitwise, Perfect Power Divisors, Strange Number
May Challenge 2020 Division 1
Buying a New String, Triple Sort, Sorting Vases, Chef and Bitwise Product, (Challenge) Nanobots
June Challenge 2020 Division 1
Covid Sampling (Challenge), Convenient Airports, The Delicious Cake, The Tom and Jerry Game!, Operations on a Tuple
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, (Challenge) Dynamic Hull
August Challenge 2020 Division 1
Insanely Hard School Exams, Subsequence Frequency Counting, Smallest KMP, Chef Thanos Wants Perfect Balance, Chef and Wedding Arrangements
September Challenge 2020 Division 1
Chefina and Swap, Ada Matrix, Divide Candies, Find XOR, Chef and Trump Cards
January Challenge 2021 Division 1
Chef and Ants, Guess the Tiling, Expected Number of SCCs, Blackjack, Stack-Queue Sort (Challenge)
December Lunchtime 2020 Division 1 (Unrated)
Even Sequence, Three Letters, One Zero Swaps
Italy