July Challenge 2016
Chef and Tetris, Chef and Robots Competition, Chefland and Electricity, Andrash and Stipendium
September Challenge 2016
Chef and Friends, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
October Challenge 2016
Chef and Two String, Chef and Three Dogs, Chef and Keyboard, Sereja and Stones, Fenwick Iterations
November Challenge 2016
Chef and squares, Task for Alexey, Kirito in Memeland, Gift and Chef, Urban Development, Friends Meeting, Count Permutations
September Cook-Off 2016
Lazy Jem, The Lost Arithmetic Sequences, Counting Strings
February Challenge 2017
Gerrymander, Chef and Triangles, Most Frequent Element, Eugene and big number, Chef and His Apartment Dues
March Challenge 2017
Cooking Schedule, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, Bandwidth of a matrix
October Mega Cook-Off 2018 Division 1
Binary Nim 2, Pumping Water
December Challenge 2018 Division 1
Colorblind Feast, Chef and Interactive XOR, Directing Edges, Max and Electrical Panel, (Challenge) Delete DAG
November Challenge 2018 Division 1
Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Binary Strings
October Challenge 2018 Division 1
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard
