October Challenge 2019 Division 2
Chef and Maximum Star Value, Even Edges, Phone Prices, Array Modification, Operations on a Matrix
November Challenge 2019 Division 2
Chef and Minimum Colouring, (Challenge) Coloring Triangulations, Weapon Value, Single Point of Failure, A Simple Game, From Zero to Infinity, Smallest Beautiful Number, Hard Sequence, Physical Exercise
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)
August Cook-Off 2021 Division 1
Clear the Array, Different String, Odd Array
August Lunchtime 2021 Division 1
Bunny Hops, Just a Graph, Chef and Deque
September Lunchtime 2021 Division 1
Interesting Representation, Alice vs Bob Faceoff
October Cook-Off 2021 Division 1
Can You Reach The End, Find the Modulus, Chef Up
November Challenge 2021 Division 1 (Unrated)
Weird Palindrome Making, Maximise the bridges, Hill Sequence, Xor Equation, Wildcard Replacement
December Lunchtime 2021 Division 1
Optimal Sorting, Romantic Reversals
January Cook-Off 2022 Division 1
Subsegment Divisibility , Merged LIS, Erase All But One
February Lunchtime 2022 Division 1
Visit Them All, Magical Modulo, Magnet Sort
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