May Challenge 2012
Little Elephant and Median, Jewels and Stones, Lucky lucky number, Divisible Pairs, Remember the recipe, A Home for Chef, Killing Gs
August Challenge 2012
Little Elephant and Bombs, Range of Data, Delivery Boy
April Challenge 2013
Little Elephant and Music, Barcelona Gameplay Tactics, Kingdom Unity, Maximum Weight Difference, Levy Conjecture
October Challenge 2013
Helping Lira, Maxim and Dividers
February Challenge 2014
Colored Array, Little Elephant and Subarrays, Make Him Happy, Draughts, Longest Common Pattern
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
November Challenge 2018 Division 1
Appy Loves One, Good Median, Magician versus Chef 2
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Circles, Byte to Bit, Chef and Serves, Chef and Surprise Chessboard, Beautiful Bricks, Appy and Balloons
September Lunchtime 2018 Division 2
Judging Delay, Opposite Cites, Chef Restaurant
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Distinct Pairs, A Pizza Slice
February Challenge 2019 Division 1
Chef and Secret Ingredients
