March Challenge 2016
maximize the sum, Palindromic substrings
April Challenge 2016
Chef and Ballons, Chef And Magical Path, Chef And Coloring, Help Watson Escape
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
September Challenge 2016
Faded Palindromes, Chef and calculation, Chef and digits of a number
October Challenge 2016
Sereja and Progressions, Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
June Lunchtime 2016
Collisions, One more weird game
February Challenge 2017
Most Frequent Element, Gerrymander, Chef and His Apartment Dues, Chef and Triangles
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings
India