July Cook-Off 2016
Chef and Numbers, Chef and Proportion
July Lunchtime 2016
Drumpf for President!, Lumpy - The Bus Driver
March Challenge 2017
Xenny and Alternating Tasks
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Weasel does Xor on Tree, Fill The Matrix, Little Chef and Sums
November Challenge 2018 Division 2
Chef and Difficult Contests, Chef and Happiness, Appy Loves One, Chef and Ridges
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, A Pizza Slice
July Challenge 2020 Division 1
Chefina and Swaps, Missing a Point, Doctor Chef
September Challenge 2020 Division 1
Chefina and Swap, Find XOR, Ada Matrix
China