Problems solved: 18

Friendly rooks	Bools and cows	5 instead of 1
Equilateral Triangles	Sum of four	Money date
2020 digit	Tommorow's day	Temirlan's cake
Test	U turn	Random answer
Not your business	2020 Palindromes	Divisibility by 4
One three-digit number	Cubical squares	Numbers ratio

Games

Under construction