The Tic-tac-toe hole will go live in approximately 3 days. Why not try and solve it ahead of time?

Rankings: Languages

J in bytes.

Bytes Chars

#	Hole	Medal
1^st	24 Game	🥇
2^nd	Arithmetic Numbers	🥇
3^rd	Billiards	🥉
4^th	Catalan’s Constant	🥇
5^th	Cubes	🥇
6^th	Divisors	🥇
7^th	Factorial Factorisation	🥇
8^th	Foo Fizz Buzz Bar	🥇
9^th	Kaprekar Numbers	🥉
10^th	Kolakoski Constant	🥇
11^th	N Queens	🥈
12^th	Number Spiral	🥇
13^th	Partition Numbers	🥈
14^th	Pascal’s Triangle	🥇
15^th	Pernicious Numbers (Long)	🥇
16^th	Poker	🥉
17^th	Polyominoes	🥈
18^th	Prime Numbers	🥇
19^th	Prime Numbers (Long)	🥇
20^th	QR Decoder	🥉
21^st	Rule 110	🥈
22^nd	Semiprime Numbers	🥇
23^rd	Sierpiński Triangle	🥇
24^th	Smith Numbers	🥇
25^th	Sphenic Numbers	🥇
26^th	Vampire Numbers	🥇
27^th	λ	🥈
28^th	φ	🥇
29^th	√2	🥈
30^th	𝑒	🥇