July Challenge 2018 Division 2
Magic Set, Strike or Spare
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Yet Another Problem About Sequences, Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, A Pizza Slice
June Challenge 2019 Division 2
Sum and GCD, Chef and Ingredients, Chef and Proxy, Road Signs, Guddu on a Date
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
May Cook-Off 2020 Division 1
Chef, Chefina and Their Friendship, Roads in Chefland
Biteration #2 (Rated for Division 2)
C - Chef and Maths, B - Candy Love, A - Books
UWCOI 2020 (Rated for all)
Button Pairs, Find maximum in an Array
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef
June Lunchtime 2020 Division 1
Maximum AND, Gold Mining, Square Submatrices
SnackDown 2021 - Online Round 1A
Round Robin Ranks , Dance Moves, Min Max LCM
India