November Challenge 2016
Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Task for Alexey, Count Permutations
February Cook-Off 2017
Download file, Chairs, Cooking Game
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Chefness, Chef and Line
Japan