September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
February Challenge 2017
Chef and His Apartment Dues, Gerrymander, Chef and Triangles
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
May Challenge 2017
Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers
India