April Challenge 2016
Chef and Ballons, Chef And Coloring
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Bandwidth of a matrix, (CH) Bear and Sorted Rows, Bear and Extra Number, Xenny and Alternating Tasks
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings
India