September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix, Bank robbery, Lighthouses
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
December Challenge 2015
Chef and the stones, Oracle Devu and Longest Common Subsequence
September Lunchtime 2015
Sum of palindromic numbers
February Challenge 2016
Chef and Strange Operations, Chef-Detective, Devu and a light discussion
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
October Challenge 2016
Chef and Two String, Chef and Keyboard, Chef and Three Dogs, Sereja and Progressions, Fenwick Iterations
November Challenge 2016
Count Permutations, Friends Meeting, Chef and squares, Task for Alexey
February Cook-Off 2016
Puppy and Board, Puppy and Sum
April Cook-Off 2016
Movie Weekend, Odd Divisors
February Challenge 2017
Chef and His Apartment Dues, Gerrymander, Most Frequent Element, 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, Bear and Clique Distances, Similar Dishes
India