June Challenge 2014
Guessing Game, Chef and Subarray
August Challenge 2014
The Leaking Robot, Chef and Gift
January Challenge 2015
Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
January Cook-Off 2015
Tojo hates probabilities, Suraj goes shopping
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
April Challenge 2017
Dish Of Life, Bear and Row 01
India