September Challenge 2016
Dividing Machine, Chef and digits of a number, Faded Palindromes, Chef and calculation, Chef and Friends
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs
December Challenge 2016
Train Partner, Our Base is Under Attack
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Gerrymander
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
April Challenge 2017
Similar Dishes, Bear and Row 01, Dish Of Life
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Pairwise union of sets
July Challenge 2017
Chef and Sign Sequences, Whats in the Name
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Periodic Palindrome Construction, Villages and Tribes, Chef goes Left Right Left
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date
India