March Challenge 2020 Division 2
Ada Bishop 2, Pintu and Fruits, XOR Engine
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)
March Cook-Off 2020 Division 2
Mysterious Sequence, Find Your Gift, Box of Chocolates, Escape the Tree
May Cook-Off 2020 Division 1
Roads in Chefland, Chef, Chefina and Their Friendship
March Lunchtime 2020 Division 1 (Unrated)
Maximize LCM, Strip in a Tree!
April Lunchtime 2020 Division 1
Triangle Query, Positive Mex
May Lunchtime 2020 Division 1
Convert the String, Tree difference
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, Weird Product
August Challenge 2020 Division 1
Chef Thanos Wants Perfect Balance, Chef and Wedding Arrangements, Smallest KMP, Precious Stones , Subsequence Frequency Counting, Insanely Hard School Exams, Chefina and Strange Tree
September Challenge 2020 Division 1
Vibrating Paths (Challenge), Ada Matrix, Divide Candies, Move the Coins - Creating Tests, Chef and Sums, Rotate the Polyline, Find XOR, Chef and Trump Cards, Move the Coins 2, Chefina and Swap
July Cook-Off 2020 Division 1
Even-tual Reduction, OR-thodox Distinction
July Lunchtime 2020 Division 1
Golomb Sequence, Binary Concatenation
January Challenge 2021 Division 1
Cool Subsets, Encoded String, Point Of Impact, Chef and Division 3, And-Or Game, Sequence Creation, Fair Elections, Watching CPL, Stack-Queue Sort (Challenge), Blackjack, Expected Number of SCCs, Guess the Tiling, Chef and Ants, Curious Matrix
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Perry learns Binary
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