September Lunchtime 2017
Chef and Cook-Off Contests
September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
May Challenge 2018 Division 2
Minimum Deletions, Xor Again
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures
November Challenge 2018 Division 2
Chef and Difficult Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
February Lunchtime 2019 Division 2
Average Number, The Tricky Deal
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