February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Chefness, Chef and Line
February Cook-Off 2019 Division 2
Max Range Queries, Chef and Secret Password, Chef in Evil Land, Buying New Tablet, Chef and Party
February Lunchtime 2019 Division 1
Roll the Bar, Chef Challenge, The Tricky Deal
March Challenge 2019 Division 1
Chef and Soccer, Cheating on Queue, Treasure Hunt, Yet Again a Subarray Problem, Matchable Permutations, (Challenge) Interleaving Strings
March Lunchtime 2019 Division 1
Corrupted Seven-Segment Display, Partition into Permutations, Tree Flow, Travelling Saleschef
April Lunchtime 2019 Division 1
Dream Problem, Firdavs and Planet F, Minimum Sum, Chef Rami and Inventions
May Challenge 2019 Division 1
Ada Pawns, Where to Build the Roads, Trees and Degrees, Ada Rooks 2
May Cook-Off 2019 Division 1
Misha and Nice Sets, Bitsetbaba and Power Grid, Expected Xor, Searching for a Biclique
May Lunchtime 2019 Division 1 (Unrated)
Grid Tour, Reverse Maximisation, XOR Magic, Abdullah and Toll Discounts
Russia