May Challenge 2017
Chef and his daily routine
June Challenge 2017
A Good Set, Xenny and Coin Rankings, Triplets
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator , IPC Trainers
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
November Challenge 2017
Chef Hates Palindromes, Villages and Tribes, Periodic Palindrome Construction, Chef goes Left Right Left
December Challenge 2017
Chef and Hamming Distance of arrays
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
January Lunchtime 2018
Chef and Game with Sequence, Chef and Escaping from the Labyrinth
Vietnam