The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?

RuyiLi

4,117

•

4,023

🥇1

•

🥈0

•

🥉0

⛳

6 / 123 Holes

🔣

3 / 62 Langs

🏆

6 / 99 Cheevos

📅

1 Apr 2023

Collatz

150^th 199^th 53^rd

Divisors

Evil Numbers

Evil Numbers (Long)

Leap Years

√2