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 800th bstrat 859 35 9ms 6 Jun 2024 800th wh3n3v3r 🇨🇿 859 35 8ms 18 Nov 2024 803rd rucin93 🇵🇱 859 57 149ms 4 Aug 2024 803rd dokutan 859 57 157ms 9 Aug 2024 805th dokutan 859 79 10ms 27 Apr 2024 805th SwordF-Official 🇺🇸 859 79 10ms 1 Feb 2026 807th MeWhenI 🇻🇦 859 81 8ms 23 May 2023 807th Shanethegamer 🇺🇸 859 81 18ms 19 Dec 2023 807th emgordon154 859 81 20ms 29 Jul 2025 810th MeWhenI 🇻🇦 859 145 1,417ms 28 Mar 2025 811th JRaspass 🇬🇧 858 41 409ms 4 May 2022 811th SirBogman 🇺🇸 858 41 274ms 4 May 2022 811th Natanaelel 🇸🇪 858 41 384ms 4 May 2022 814th 5quiwyrm 858 52 304ms 4 Sep 2022 814th MeWhenI 🇻🇦 858 52 318ms 28 Jan 2023 814th Feniske 🇫🇷 858 52 302ms 7 Nov 2023 814th dcgjb 858 52 279ms 29 Jan 2024 814th JPRuskin 🇬🇧 858 52 263ms 7 Apr 2025 814th IISResetMe 858 52 325ms 7 Apr 2025 814th Ripick 858 52 310ms 1 Jun 2025 814th madex 🇩🇪 858 52 299ms 21 days ago 822nd jared-hughes 858 72 2ms 6 Jul 2022 822nd Steffan153 🇫🇮 858 72 2ms 3 Jan 2023 822nd MeWhenI 🇻🇦 858 72 2ms 7 May 2023 822nd ListeriaM 858 72 2ms 22 Aug 2023 822nd larcherMTT 858 72 2ms 5 Oct 2024 822nd snyderek 🇺🇸 858 72 2ms 19 Feb 2025 822nd 5quiwyrm 858 72 2ms 29 Jun 2025 822nd TeodorDyakov 🇧🇬 858 72 3ms 8 Jul 2025 822nd xiaoyiming123 858 72 2ms 12 Jul 2025 831st ovs-code 🇩🇪 857 83 57ms 1 Jul 2024 832nd 386asm 🇺🇸 857 86 40ms 9 Apr 2023 832nd DialFrost 🇸🇬 857 86 43ms 30 Dec 2025 834th Liibe 857 97 471ms 25 Sep 2025 834th Schmitt-Very-Cool 857 97 434ms 26 Sep 2025 836th frankgraziano 857 198 108ms 14 Oct 2025 837th typeswitch-dev 🇵🇹 856 75 4ms 22 Jul 2023 838th yeminghan2021 856 99 57ms 3 Feb 2025 839th nwellnhof 🇩🇪 856 111 301ms 4 May 2022 839th stefangimmillaro 856 111 310ms 26 Sep 2023 839th kkoenig 856 111 290ms 4 Jan 2024 842nd Frowny 855 38 40ms 5 May 2022 842nd stackofbears 855 38 42ms 14 Mar 2025 844th DialFrost 🇸🇬 855 50 243ms 24 Oct 2023 845th Shanethegamer 🇺🇸 855 70 104ms 12 Dec 2022 845th Alessandro-Balconi 🇮🇹 855 70 103ms 26 Dec 2022 845th snoozingnewt 🇨🇦 855 70 210ms 22 Nov 2025 848th aditsu 855 77 2,321ms 23 Nov 2025 849th henrydukepickle 855 97 125ms 8 Jul 2025 850th ovs-code 🇩🇪 855 161 1,719ms 14 Sep 2025 851st eshilo-draper 853 91 358ms 4 Sep 2022 851st ericlangedijk 🇸🇮 853 91 369ms 23 May 2023 851st KatieLG 🇬🇧 853 91 377ms 30 Apr 2024 851st Mikey-Beep 🇬🇧 853 91 365ms 3 Sep 2024 855th MeWhenI 🇻🇦 853 92 467ms 10 Oct 2022 855th Betuaredead 853 92 480ms 5 Jan 2023 855th Yax42 🇫🇷 853 92 459ms 4 Oct 2025 858th o0lit3 🇺🇸 852 54 7ms 22 Jun 2023 858th Natanaelel 🇸🇪 852 54 7ms 10 Feb 2025 860th Yewzir 🇧🇪 852 65 4ms 9 Oct 2023 860th MeWhenI 🇻🇦 852 65 4ms 10 Oct 2023 862nd Shanethegamer 🇺🇸 852 83 1,252ms 4 May 2022 863rd mtirado1 850 74 91ms 24 Dec 2022 863rd Betuaredead 850 74 95ms 6 Jan 2023 863rd KatieLG 🇬🇧 850 74 91ms 15 Jan 2023 863rd bwat2 850 74 88ms 31 Mar 2023 863rd stackotter 850 74 90ms 29 May 2023 863rd ovs-code 🇩🇪 850 74 85ms 17 Apr 2024 869th Shanethegamer 🇺🇸 850 99 31ms 27 Apr 2023 870th JayXon 🇺🇸 848 56 1,287ms 9 May 2022 871st dokutan 848 82 21ms 1 Jul 2024 872nd shinh 847 52 43ms 29 Jun 2022 872nd MeWhenI 🇻🇦 847 52 67ms 25 Jul 2023 874th the-zammers 847 68 165ms 2 Oct 2023 875th lynn 847 96 29ms 11 Jul 2023 876th jared-hughes 847 100 58ms 20 Jul 2022 876th ZakkkkAttackkkk 🇵🇭 847 100 61ms 10 Aug 2022 876th Walter225 847 100 62ms 25 Jul 2023 879th MeWhenI 🇻🇦 846 26 160ms 25 Aug 2022 879th AlephSquirrel 846 26 157ms 6 Jan 2023 First Prev 801–880 of 3,645 Next Last