April Challenge 2019 Division 2
Maximum Remaining, Fencing
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients, Sum and GCD
June Lunchtime 2019 Division 2
Magda and Silly Pairs, Ping Paja Pong
July Challenge 2019 Division 2
Parity Again, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 1
Easy Fibonacci, Chef and Interesting Subsequences , Chef Designed a Network
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Chefina and Prefix Suffix Sums
February Challenge 2020 Division 1
The Theatre Problem, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, No Change Required, Expected Change, Chef and Railway Stations
December Challenge 2020 Division 1
Hail XOR, Calculus, String Operations, Positive Prefixes, Even Pair Sum
India