12 Days of Christmas
            
                        
                    
                        
                    8th
                        
                    
        
            24 Game
            
                        
                    
                        
                    22nd
                        
                    
        
            99 Bottles of Beer
            
                        
                    
                        
                    11th
                        
                    
        
            Abundant Numbers (Long)
            
                        
                    
                        
                    71st
                        
                    
        
            Arabic to Roman
            
                        
                    
                        
                    136th
                        
                    
        
            Arithmetic Numbers
            
                        
                    
                        
                    106th
                        
                    
        
            Arrows
            
                        
                    
                        
                    23rd
                        
                    
        
            Ascending Primes
            
                        
                    
                        
                    73rd
                        
                    
        
            ASCII Table
            
                        
                    
                        
                    29th
                        
                    
        
            Billiards
            
                        
                    
                        
                    19th
                        
                    
        
            brainfuck
            
                        
                    
                        
                    23rd
                        
                    
        
            Card Number Validation
            
                        
                    
                        
                    35th
                        
                    
        
            Catalan Numbers
            
                        
                    
                        
                    267th
                        
                    
        
            Catalan’s Constant
            
                        
                    
                        
                    144th
                        
                    
        
            Christmas Trees
            
                        
                    
                        
                    15th
                        
                    
        
            Collatz
            
                        
                    
                        
                    68th
                        
                    
        
            CSS Colors
            
                        
                    
                        
                    38th
                        
                    
        
            Cubes
            
                        
                    
                        
                    8th
                        
                    
        
            Day of Week
            
                        
                    
                        
                    1st
                        
                    
        
            DFA Simulator
            
                        
                    
                        
                    30th
                        
                    
        
            Diamonds
            
                        
                    
                        
                    235th
                        
                    
        
            Divisors
            
                        
                    
                        
                    374th
                        
                    
        
            Emirp Numbers
            
                        
                    
                        
                    19th
                        
                    
        
            Emirp Numbers (Long)
            
                        
                    
                        
                    40th
                        
                    
        
            Emojify
            
                        
                    
                        
                    33rd
                        
                    
        
            Evil Numbers
            
                        
                    
                        
                    967th
                        
                    
        
            Evil Numbers (Long)
            
                        
                    
                        
                    242nd
                        
                    
        
            Factorial Factorisation
            
                        
                    
                        
                    26th
                        
                    
        
            Farey Sequence
            
                        
                    
                        
                    45th
                        
                    
        
            Fibonacci
            
                        
                    
                        
                    
                        
                    8,859th
        
            Fizz Buzz
            
                        
                    
                        
                    415th
                        
                    
        
            Foo Fizz Buzz Bar
            
                        
                    
                        
                    157th
                        
                    
        
            Forsyth–Edwards Notation
            
                        
                    
                        
                    39th
                        
                    
        
            Fractions
            
                        
                    
                        
                    155th
                        
                    
        
            Game of Life
            
                        
                    
                        
                    147th
                        
                    
        
            Gijswijt’s Sequence
            
                        
                    
                        
                    238th
                        
                    
        
            Happy Numbers
            
                        
                    
                        
                    48th
                        
                    
        
            Happy Numbers (Long)
            
                        
                    
                        
                    59th
                        
                    
        
            Hexdump
            
                        
                    
                        
                    38th
                        
                    
        
            Hilbert Curve
            
                        
                    
                        
                    38th
                        
                    
        
            Intersection
            
                        
                    
                        
                    50th
                        
                    
        
            ISBN
            
                        
                    
                        
                    44th
                        
                    
        
            Jacobi Symbol
            
                        
                    
                        
                    62nd
                        
                    
        
            Kaprekar Numbers
            
                        
                    
                        
                    75th
                        
                    
        
            Kolakoski Constant
            
                        
                    
                        
                    14th
                        
                    
        
            Kolakoski Sequence
            
                        
                    
                        
                    406th
                        
                    
        
            Leap Years
            
                        
                    
                        
                    13th
                        
                    
        
            Levenshtein Distance
            
                        
                    
                        
                    187th
                        
                    
        
            Leyland Numbers
            
                        
                    
                        
                    95th
                        
                    
        
            Look and Say
            
                        
                    
                        
                    69th
                        
                    
        
            Lucky Numbers
            
                        
                    
                        
                    53rd
                        
                    
        
            Lucky Tickets
            
                        
                    
                        
                    200th
                        
                    
        
            Mahjong
            
                        
                    
                        
                    11th
                        
                    
        
            Mandelbrot
            
                        
                    
                        
                    24th
                        
                    
        
            Maze
            
                        
                    
                        
                    40th
                        
                    
        
            Medal Tally
            
                        
                    
                        
                    19th
                        
                    
        
            Minesweeper
            234th229th23rd
                        
                    
        
            Morse Decoder
            
                        
                    
                        
                    18th
                        
                    
        
            Morse Encoder
            
                        
                    
                        
                    20th
                        
                    
        
            Musical Chords
            
                        
                    
                        
                    24th
                        
                    
        
            N Queens
            
                        
                    
                        
                    18th
                        
                    
        
            Niven Numbers
            
                        
                    
                        
                    576th
                        
                    
        
            Niven Numbers (Long)
            
                        
                    
                        
                    245th
                        
                    
        
            Number Spiral
            
                        
                    
                        
                    40th
                        
                    
        
            Odious Numbers
            
                        
                    
                        
                    824th
                        
                    
        
            Odious Numbers (Long)
            
                        
                    
                        
                    176th
                        
                    
        
            Ordinal Numbers
            
                        
                    
                        
                    115th
                        
                    
        
            Pangram Grep
            
                        
                    
                        
                    43rd
                        
                    
        
            Partition Numbers
            
                        
                    
                        
                    25th
                        
                    
        
            Pascal’s Triangle
            
                        
                    
                        
                    495th
                        
                    
        
            Pernicious Numbers
            
                        
                    
                        
                    141st
                        
                    
        
            Pernicious Numbers (Long)
            
                        
                    
                        
                    61st
                        
                    
        
            Poker
            
                        
                    
                        
                    13th
                        
                    
        
            Polyominoes
            
                        
                    
                        
                    13th
                        
                    
        
            Prime Numbers
            
                        
                    
                        
                    285th
                        
                    
        
            Prime Numbers (Long)
            
                        
                    
                        
                    345th
                        
                    
        
            Proximity Grid
            
                        
                    
                        
                    35th
                        
                    
        
            QR Decoder
            
                        
                    
                        
                    14th
                        
                    
        
            Recamán
            
                        
                    
                        
                    46th
                        
                    
        
            Repeating Decimals
            
                        
                    
                        
                    59th
                        
                    
        
            Reverse Polish Notation
            
                        
                    
                        
                    193rd
                        
                    
        
            Reversi
            
                        
                    
                        
                    23rd
                        
                    
        
            Rijndael S-box
            
                        
                    
                        
                    9th
                        
                    
        
            Rock-paper-scissors-Spock-lizard
            
                        
                    
                        
                    17th
                        
                    
        
            Roman to Arabic
            
                        
                    
                        
                    87th
                        
                    
        
            ROT13
            
                        
                    
                        
                    418th
                        
                    
        
            Rule 110
            
                        
                    
                        
                    140th
                        
                    
        
            Scrambled Sort
            
                        
                    
                        
                    133rd
                        
                    
        
            Set
            
                        
                    
                        
                    52nd
                        
                    
        
            Seven Segment
            
                        
                    
                        
                    23rd
                        
                    
        
            SI Units
            
                        
                    
                        
                    5th
                        
                    
        
            Sierpiński Triangle
            
                        
                    
                        
                    28th
                        
                    
        
            Smith Numbers
            
                        
                    
                        
                    23rd
                        
                    
        
            Spelling Numbers
            
                        
                    
                        
                    113th
                        
                    
        
            Star Wars GPT
            
                        
                    
                        
                    34th
                        
                    
        
            Star Wars Opening Crawl
            
                        
                    
                        
                    11th
                        
                    
        
            Sudoku
            
                        
                    
                        
                    8th
                        
                    
        
            Sudoku (Fill-in)
            
                        
                    
                        
                    29th
                        
                    
        
            Ten-pin Bowling
            
                        
                    
                        
                    19th
                        
                    
        
            Time Distance
            
                        
                    
                        
                    13th
                        
                    
        
            Tongue-twisters
            
                        
                    
                        
                    14th
                        
                    
        
            Topological Sort
            
                        
                    
                        
                    27th
                        
                    
        
            Transpose Sentence
            
                        
                    
                        
                    96th
                        
                    
        
            United States
            
                        
                    
                        
                    35th
                        
                    
        
            Vampire Numbers
            
                        
                    
                        
                    20th
                        
                    
        
            Zeckendorf Representation
            
                        
                    
                        
                    43rd
                        
                    
        
            Zodiac Signs
            
                        
                    
                        
                    35th
                        
                    
        
            λ
            
                        
                    
                        
                    10th
                        
                    
        
            π
            
                        
                    
                        
                    296th
                        
                    
        
            τ
            
                        
                    
                        
                    271st
                        
                    
        
            φ
            
                        
                    
                        
                    183rd
                        
                    
        
            𝑒
            
                        
                    
                        
                    357th