- 12 Days of Christmas
- 99 Bottles of Beer
- Christmas Trees
- Cubes
- Diamonds
- Sierpiński Triangle
- Swallowed a Fly TODO
- Brainfuck
- Deadfish TODO
- Quine
-
Poker
-
Sudoku
-
Ten-pin Bowling TODO
X 7/ 9- X -8 ⑧/ F6 X X X81=167X X X X X X X X X XXX=300
- λ (Conway's constant)
- π (Pi)
- τ (Tau)
- φ (Phi)
- 𝑒 (Euler's number)
- √2 (Pythagoras' constant) TODO
- γ (Euler–Mascheroni constant) TODO
- K (Khinchin's constant) TODO
- Divisors
- Emirp Numbers
- Evil Numbers
- Fibonacci
- Fizz Buzz
- Fortunate Numbers TODO
- Happy Numbers
- Leap Years
- Lucky Numbers TODO
- Lucky Primes TODO
- Niven Numbers
- Odious Numbers
- Pascal's Triangle
- Perfect Numbers TODO
- Pernicious Numbers
- Prime Numbers
- Semiprime Numbers TODO
- Sphenic Numbers TODO
- Triangular Numbers TODO
- Arabic to Roman
- ISBN Check Digit TODO
- Morse Decoder
- Morse Encoder
- Pangram Grep
- Roman to Arabic
- Seven Segment
- Spelling Numbers
- £sd TODO