March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
February Lunchtime 2017
Bear and House Queries, Bear and Milky Cookies
February Challenge 2019 Division 2
Deputy Chef, Appy and Contest, Chef and Secret Ingredients, Chef and Magical Jars
December Challenge 2019 Division 2
Plus Multiply, Easy Subsequence Selection, That Is My Score!
December Lunchtime 2019 Division 2
The Evil Professor, Stupid Machine, Check Algorithm, Guess the number
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food, Under the Tunnels
India