12 Days of Christmas
868
99 Bottles of Beer
766
Arrows
390
Billiards
358
Card Number Validation
404
Christmas Trees
621
Collatz
723
CSS Colors
241
Day of Week
819
Divisors
889
Emojify
386
Factorial Factorisation
141
Fibonacci
738
Fizz Buzz
859
Foo Fizz Buzz Bar
814
Forsyth–Edwards Notation
519
Happy Numbers
375
ISBN
745
Leap Years
683
ln 2
135
Morse Decoder
259
Morse Encoder
371
Ordinal Numbers
709
Pernicious Numbers
437
Prime Numbers
735
Prime Numbers (Long)
771
Repeating Decimals
1,000
Rock-paper-scissors-Spock-lizard
558505
ROT13
442
Sudoku
587
Tic-tac-toe
351
Tongue-twisters
590
United States
226
π
147
τ
147
√2
141