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 Gray Code Decoder Gray Code Encoder 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 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 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 801st MeWhenI 🇻🇦 860 81 8ms 23 May 2023 802nd ulucs 859 35 9ms 8 May 2022 802nd bstrat 859 35 9ms 6 Jun 2024 802nd wh3n3v3r 🇨🇿 859 35 8ms 18 Nov 2024 805th JRaspass 🇬🇧 859 41 409ms 4 May 2022 805th SirBogman 🇺🇸 859 41 274ms 4 May 2022 805th Natanaelel 🇸🇪 859 41 384ms 4 May 2022 808th 5quiwyrm 859 52 304ms 4 Sep 2022 808th MeWhenI 🇻🇦 859 52 265ms 28 Jan 2023 808th Feniske 🇫🇷 859 52 295ms 7 Nov 2023 808th dcgjb 859 52 279ms 29 Jan 2024 808th JPRuskin 🇬🇧 859 52 263ms 7 Apr 2025 808th IISResetMe 859 52 278ms 7 Apr 2025 808th Ripick 859 52 295ms 1 Jun 2025 808th madex 🇩🇪 859 52 277ms 23 days ago 816th dokutan 859 79 10ms 27 Apr 2024 816th SwordF-Official 🇺🇸 859 79 10ms 1 Feb 2026 818th Shanethegamer 🇺🇸 859 81 18ms 19 Dec 2023 818th emgordon154 859 81 20ms 29 Jul 2025 820th frankgraziano 859 198 108ms 14 Oct 2025 821st jared-hughes 858 72 2ms 6 Jul 2022 821st Steffan153 🇫🇮 858 72 2ms 3 Jan 2023 821st MeWhenI 🇻🇦 858 72 2ms 7 May 2023 821st ListeriaM 858 72 2ms 22 Aug 2023 821st larcherMTT 858 72 2ms 5 Oct 2024 821st snyderek 🇺🇸 858 72 2ms 19 Feb 2025 821st 5quiwyrm 858 72 2ms 29 Jun 2025 821st TeodorDyakov 🇧🇬 858 72 3ms 8 Jul 2025 821st xiaoyiming123 858 72 2ms 12 Jul 2025 830th typeswitch-dev 🇵🇹 858 75 4ms 22 Jul 2023 831st ovs-code 🇩🇪 858 83 57ms 1 Jul 2024 832nd 386asm 🇺🇸 858 86 40ms 9 Apr 2023 832nd DialFrost 🇸🇬 858 86 43ms 30 Dec 2025 834th Liibe 857 97 471ms 25 Sep 2025 834th Schmitt-Very-Cool 857 97 434ms 26 Sep 2025 836th nwellnhof 🇩🇪 857 111 308ms 4 May 2022 836th stefangimmillaro 857 111 341ms 26 Sep 2023 836th kkoenig 857 111 319ms 4 Jan 2024 839th ovs-code 🇩🇪 857 161 1,719ms 14 Sep 2025 840th Frowny 856 38 40ms 5 May 2022 840th stackofbears 856 38 42ms 14 Mar 2025 842nd Shanethegamer 🇺🇸 856 70 104ms 12 Dec 2022 842nd Alessandro-Balconi 🇮🇹 856 70 102ms 26 Dec 2022 842nd snoozingnewt 🇨🇦 856 70 210ms 22 Nov 2025 845th aditsu 856 77 2,321ms 23 Nov 2025 846th yeminghan2021 856 99 69ms 3 Feb 2025 847th DialFrost 🇸🇬 855 50 234ms 24 Oct 2023 848th henrydukepickle 855 97 125ms 8 Jul 2025 849th eshilo-draper 854 91 358ms 4 Sep 2022 849th ericlangedijk 🇸🇮 854 91 369ms 23 May 2023 849th KatieLG 🇬🇧 854 91 377ms 30 Apr 2024 849th Mikey-Beep 🇬🇧 854 91 365ms 3 Sep 2024 853rd MeWhenI 🇻🇦 854 92 467ms 10 Oct 2022 853rd Betuaredead 854 92 480ms 5 Jan 2023 853rd Yax42 🇫🇷 854 92 459ms 4 Oct 2025 856th Yewzir 🇧🇪 853 65 4ms 9 Oct 2023 856th MeWhenI 🇻🇦 853 65 4ms 10 Oct 2023 858th Shanethegamer 🇺🇸 853 83 1,252ms 4 May 2022 859th o0lit3 🇺🇸 852 54 7ms 22 Jun 2023 859th Natanaelel 🇸🇪 852 54 7ms 10 Feb 2025 861st Shanethegamer 🇺🇸 851 99 25ms 27 Apr 2023 862nd mtirado1 850 74 91ms 24 Dec 2022 862nd Betuaredead 850 74 95ms 6 Jan 2023 862nd KatieLG 🇬🇧 850 74 86ms 15 Jan 2023 862nd bwat2 850 74 88ms 31 Mar 2023 862nd stackotter 850 74 90ms 29 May 2023 862nd ovs-code 🇩🇪 850 74 85ms 17 Apr 2024 868th JayXon 🇺🇸 849 56 1,287ms 9 May 2022 869th the-zammers 848 68 165ms 2 Oct 2023 870th dokutan 848 82 21ms 1 Jul 2024 871st lynn 848 96 29ms 11 Jul 2023 872nd shinh 847 52 42ms 29 Jun 2022 872nd MeWhenI 🇻🇦 847 52 67ms 25 Jul 2023 874th jared-hughes 847 100 62ms 20 Jul 2022 874th ZakkkkAttackkkk 🇵🇭 847 100 61ms 10 Aug 2022 874th Walter225 847 100 59ms 25 Jul 2023 877th MeWhenI 🇻🇦 846 26 160ms 25 Aug 2022 877th AlephSquirrel 846 26 157ms 6 Jan 2023 877th ovs-code 🇩🇪 846 26 367ms 5 May 2024 877th saito-ta 🇯🇵 846 26 154ms 12 Dec 2024 First Prev 801–880 of 3,704 Next Last