December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive Contests, Chef and An Ideal Problem
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Fancy Quotes
February Challenge 2019 Division 2
Guess It Right, Deputy Chef, Art of Balance, Appy and Contest, Chef and Secret Ingredients, Chef and Magical Jars, Manhattan Rectangle
February Lunchtime 2019 Division 2
Average Number, The Tricky Deal
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Fencing, Maximum Remaining, Friend or Girlfriend
April Lunchtime 2019 Division 2
Attendance, Fast Food, Minimum Sum
May Challenge 2019 Division 2
Ada Rooks 2, Matches, Reduce to One, Where to Build the Roads
June Challenge 2019 Division 2
Chef and His Dish, (Challenge) SnackDown 99, Sum and GCD, Chef and Ingredients, Guddu on a Date, Lent Money, Chef and Proxy, Road Signs
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Parity Again, Codechef War, LOVEMUFFIN, Circular Merging, Minimum and Maximum, Chef and Mean
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Addition
India