12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
CSS Colors
Cubes
Diamonds
Divisors
Emirp Numbers
Emojify
Evil Numbers
Fibonacci
Fizz Buzz
Happy Numbers
Leap Years
Morse Decoder
Odious Numbers
Ordinal Numbers
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Poker
Prime Numbers
378
248
479
633
220
432
454
760
490
180
702
777
362
376
502
547
521
691
399
613
263
441
666
423
541
Roman to Arabic
Rule 110
Spelling Numbers
√2