Problems solved: 21

Almost squared numbers	Sum of digits 2020	Friendly rooks
Math lesson	Divisibility by 4	Relatively prime with 2020
Squared fours	NRD pair	Random answer
2020 Palindromes	Sum of four	Money date
Many digits	Oh-matrix	Temirlan's cake
Cubical squares	Test	2020 digit
Odd polynomial	Tommorow's day	Numbers ratio

Games

Under construction