February Challenge 2015
Let us play with rank list, Chef and Chain, Chef and Equality
March Challenge 2015
Chef and Notebooks, Devu and his Class, Sign Wave
April Challenge 2015
Count Sequences, Chef and Interview, Broken Telephone, Chef and Piano Scales
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
June Challenge 2016
Devu and an Array, Chef and Coins Game, Chef And Binary Operation, Chef and Rectangle Array, Chef And The Hiring Event, Chef and Array and K
March Challenge 2017
(CH) Bear and Sorted Rows, Bandwidth of a matrix, Bear and Extra Number, Xenny and Alternating Tasks, Cooking Schedule
April Challenge 2017
Bear and Random Grid, Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
Alkhwarizm 2017 (Rated)
Logan and his XOR debacle
India