Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal 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 Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 80th MeWhenI 🇻🇦 947 37 47ms 4 Mar 2025 82nd Lydxn 🇨🇦 947 82 390ms 6 May 2022 82nd JayXon 🇺🇸 947 82 389ms 9 May 2022 84th Lydxn 🇨🇦 945 51 761ms 17 Jan 2024 85th ovs-code 🇩🇪 945 61 244ms 5 Aug 2024 86th JayXon 🇺🇸 944 88 390ms 24 Sep 2025 86th Lydxn 🇨🇦 944 88 409ms 12 Dec 2025 88th Lydxn 🇨🇦 943 59 10ms 6 May 2022 89th JayXon 🇺🇸 942 88 137ms 17 Oct 2022 89th acotis 942 88 129ms 9 Jun 2025 89th kumavale 942 88 135ms 7 Oct 2025 92nd 2bular 939 32 27ms 17 Oct 2024 93rd primo-ppcg 🇹🇭 938 49 6ms 5 May 2022 93rd Lydxn 🇨🇦 938 49 7ms 8 May 2022 95th Irratix 🇳🇱 936 83 408ms 4 May 2022 95th nwellnhof 🇩🇪 936 83 405ms 4 May 2022 95th ScottHamper 936 83 380ms 5 May 2022 95th Romain-1 🇫🇷 936 83 411ms 1 Jun 2022 95th Gaddy 🇫🇷 936 83 398ms 1 Jun 2022 95th 5quiwyrm 936 83 379ms 4 Sep 2022 95th Betuaredead 936 83 391ms 5 Jan 2023 95th Yewzir 🇧🇪 936 83 385ms 12 Feb 2023 95th btnlq 936 83 388ms 9 Mar 2023 95th Adix-null 🇱🇹 936 83 410ms 17 May 2023 95th Matgc04 936 83 374ms 19 May 2023 95th AdrienHache 🇫🇷 936 83 464ms 8 Jun 2023 95th gblikas 936 83 473ms 23 Jul 2023 95th KrausRaus 🇺🇸 936 83 392ms 31 Jul 2023 95th namelessiw 936 83 396ms 9 Apr 2025 95th dokutan 936 83 391ms 9 Apr 2025 95th m-tkach 🇺🇦 936 83 411ms 10 Apr 2025 95th DialFrost 🇸🇬 936 83 401ms 10 Apr 2025 95th kylejcwu 936 83 374ms 19 Apr 2025 95th Tyrant7 936 83 409ms 19 Apr 2025 95th Yax42 🇫🇷 936 83 442ms 19 Apr 2025 95th MeWhenI 🇻🇦 936 83 378ms 19 Jun 2025 95th sean-niemann 🇺🇸 936 83 400ms 20 Jun 2025 95th stefangimmillaro 936 83 391ms 20 Jun 2025 95th tomh1012 936 83 456ms 28 Aug 2025 95th fuzzylojik-golf 🇺🇸 936 83 389ms 8 Sep 2025 95th CaedenHarper 🇨🇦 936 83 377ms 17 Oct 2025 95th Flix7dev 🇧🇪 936 83 373ms 21 Oct 2025 95th arcpolaris 936 83 583ms 13 Jan 2026 95th amazingalek 🇳🇴 936 83 450ms 21 Jan 2026 125th saito-ta 🇯🇵 935 49 65ms 13 May 2022 125th Lydxn 🇨🇦 935 49 66ms 28 May 2022 127th canissimia 🇦🇶 935 50 49ms 5 May 2022 127th ovs-code 🇩🇪 935 50 269ms 7 May 2022 127th sisyphus-ppcg 🇦🇺 935 50 42ms 20 Feb 2023 127th Steffan153 🇫🇮 935 50 44ms 20 Jul 2024 127th sean-niemann 🇺🇸 935 50 46ms 9 Jun 2025 127th pardouin 🇫🇷 935 50 40ms 22 Aug 2025 133rd inventshah 935 57 11ms 4 May 2022 133rd itsh01 935 57 11ms 17 May 2022 133rd Natanaelel 🇸🇪 935 57 13ms 16 Jun 2022 133rd Attero 🇸🇪 935 57 11ms 3 Aug 2022 133rd SirFireball3521 935 57 11ms 26 Jan 2023 133rd Kacarott 🇦🇺 935 57 13ms 24 Mar 2023 133rd nathanadams 🇳🇿 935 57 13ms 24 Apr 2023 133rd hacker112 🇸🇪 935 57 11ms 20 Jun 2024 133rd thisishowmymindworks 🇳🇴 935 57 18ms 28 Jun 2024 133rd Salutations45 935 57 11ms 18 Nov 2024 133rd daniel-cardone 935 57 12ms 3 Jul 2025 133rd CaedenHarper 🇨🇦 935 57 11ms 28 Sep 2025 133rd BrunoVisnadi 🇧🇷 935 57 11ms 21 Oct 2025 133rd Laellekoenig 935 57 16ms 22 Oct 2025 133rd madex 🇩🇪 935 57 11ms 2 days ago 148th DialFrost 🇸🇬 934 89 513ms 24 Sep 2025 148th ovs-code 🇩🇪 934 89 474ms 24 Sep 2025 148th dokutan 934 89 372ms 24 Sep 2025 148th sean-niemann 🇺🇸 934 89 397ms 24 Sep 2025 148th Shanethegamer 🇺🇸 934 89 477ms 25 Sep 2025 148th nwellnhof 🇩🇪 934 89 454ms 25 Sep 2025 148th m-tkach 🇺🇦 934 89 386ms 25 Sep 2025 148th namelessiw 934 89 390ms 2 Oct 2025 148th Yewzir 🇧🇪 934 89 349ms 2 Oct 2025 148th Yax42 🇫🇷 934 89 496ms 4 Oct 2025 148th stefangimmillaro 934 89 489ms 6 Oct 2025 148th CaedenHarper 🇨🇦 934 89 467ms 9 Oct 2025 148th Jacob385 934 89 491ms 27 Oct 2025 First Prev 81–160 of 3,614 Next Last