February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Bear and Extra Number, Bandwidth of a matrix, Xenny and Alternating Tasks
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
Xenny and Coin Rankings, A Good Set
August Long Challenge 2017
Chef and Rainbow Array, Greedy Candidates
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures
November Challenge 2018 Division 2
Chef and Difficult Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
March Lunchtime 2019 Division 2
Testing Robot, Pogo Stick Competition
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash
December Challenge 2020 Division 2
Vaccine Production, Vaccine Distribution, Even Pair Sum
January Challenge 2021 Division 3
Fair Elections, Chef and Division 3, Point Of Impact, Encoded String
February Challenge 2021 Division 3
Frog Sort, Maximise Function, Highest Divisor
Starters 174 (Rated)
Too Much Homework!, Bigger is Better, Deletion and Difference
India