Collatz in all languages. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table brainfuck Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku v2 Ten-pin Bowling Time Distance Tongue-twisters United States Vampire Numbers Van Eck Sequence Zodiac Signs γ λ π τ φ √2 𝑒 All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust sed SQL Swift Tcl TeX V VimL Wren Zig All Bytes Chars Scoring All Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust sed SQL Swift Tcl TeX V VimL Wren Zig Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table brainfuck Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku v2 Ten-pin Bowling Time Distance Tongue-twisters United States Vampire Numbers Van Eck Sequence Zodiac Signs γ λ π τ φ √2 𝑒 # Golfer 🥇 💎 🥈 🥉 1st Lydxn 🇨🇦 57 (8) 10 1 2nd JayXon 🇺🇸 34 (4) 3 2 3rd GrayJoKing 🇦🇺 23 (5) 10 9 4th ovs-code 🇩🇪 16 (4) 7 7 5th primo-ppcg 🇹🇭 16 (3) 4 4 6th Steffan153 🇫🇮 15 (2) 7 12 7th MeWhenI 🇻🇦 8 (4) 11 11 8th m-tkach 🇺🇦 8 (4) 0 4 9th Shanethegamer 🇺🇸 7 (2) 3 13 10th nwellnhof 🇩🇪 7 (0) 3 4 11th canissimia 🇦🇶 6 (4) 0 0 12th Bubbler-4 5 (0) 2 0 13th btnlq 4 (2) 0 2 14th AlephSquirrel 3 (1) 0 1 15th lynn 2 (2) 1 4 16th antimon2 🇯🇵 2 (2) 0 0 16th jared-hughes 2 (2) 0 0 16th marshallward 🇺🇸 2 (2) 0 0 19th emplv 🇱🇻 2 (0) 2 2 19th sisyphus-ppcg 🇦🇺 2 (0) 2 2 21st saito-ta 🇯🇵 2 (0) 1 2 22nd clockworknazo 2 (0) 1 1 23rd stefangimmillaro 2 (0) 0 6 24th annaproxy 2 (0) 0 4 24th Irratix 🇳🇱 2 (0) 0 4 26th MichalMarsalek 🇨🇿 2 (0) 0 2 26th SirBogman 🇺🇸 2 (0) 0 2 28th GolfingSuccess 🇬🇷 2 (0) 0 0 28th hexagon8899 2 (0) 0 0 28th IanUtley 2 (0) 0 0 28th lukegustafson 🇺🇸 2 (0) 0 0 28th pavelb 2 (0) 0 0 28th prplz 🇦🇺 2 (0) 0 0 34th kg583 🇺🇸 1 (0) 1 0 35th AdrienHache 1 (0) 0 2 36th lyphyser 1 (0) 0 0 36th Rubiksmath 1 (0) 0 0 38th Yewzir 🇧🇪 0 (0) 2 6 39th angel-p57 🇯🇵 0 (0) 2 0 39th Kacarott 🇦🇺 0 (0) 2 0 39th ngn 🇧🇬 0 (0) 2 0 39th rak1507 🇬🇧 0 (0) 2 0 39th rhdqor213 0 (0) 2 0 39th TheCod-r 🇦🇶 0 (0) 2 0 39th UnderKoen 🇳🇱 0 (0) 2 0 46th DialFrost 🇸🇬 0 (0) 1 1 46th pabloferz 0 (0) 1 1 48th betaveros 0 (0) 1 0 48th neel11235813 0 (0) 1 0 48th orthoplex 🇨🇽 0 (0) 1 0 51st 78790709 0 (0) 0 4 51st Betuaredead 0 (0) 0 4 51st dokutan 0 (0) 0 4 51st janbehrens 🇩🇪 0 (0) 0 4 51st KrausRaus 🇺🇸 0 (0) 0 4 51st ScottHamper 0 (0) 0 4 51st sean-niemann 🇺🇸 0 (0) 0 4 58th Adix-null 🇱🇹 0 (0) 0 2 58th andersk 🇺🇸 0 (0) 0 2 58th dvargas46 🇺🇸 0 (0) 0 2 1–60 of 80 Next