December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
October Challenge 2018 Division 2
Byte to Bit, Chef and Serves
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date
June Cook-Off 2019 Division 2
Multiple Choice Exam, Eat Twice
June Lunchtime 2019 Division 2
Ping Paja Pong, Magda and Silly Pairs
April Challenge 2020 Division 2
Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
June Challenge 2020 Division 2
Chef and Price Control, Chef and String
September Challenge 2021 Division 3 (Rated)
XOR Equal, Shuffling Parities, Minimize Digit Sum, 2-D Point Meeting, Airline Restrictions, Travel Pass
January Lunchtime 2022 Division 2
Subarray permutations, Chef and Subset Additions
August Long 2022 Division 3 (Rated)
Hello Equation, Make A and B equal, Two Trains, Sale Season
Starters 91 Division 4 (Rated)
Odd GCD Permutation, Blobby Volley Scores, Bus Seat Numbering, Parking Charges
Starters 92 Division 4 (Rated)
Rectangular Tiling, Dotify Playlist, Water Filling, Oneful Pairs
India