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 881st MeWhenI 🇻🇦 846 26 159ms 25 Aug 2022 881st AlephSquirrel 846 26 163ms 6 Jan 2023 881st ovs-code 🇩🇪 846 26 367ms 5 May 2024 881st saito-ta 🇯🇵 846 26 154ms 12 Dec 2024 885th Natanaelel 🇸🇪 846 57 453ms 17 Jan 2024 885th Kacarott 🇦🇺 846 57 461ms 10 Sep 2024 885th albanian-laundromat 🇺🇸 846 57 463ms 7 Oct 2025 888th randolchance 846 63 13ms 8 Jan 2023 888th CatsAreFluffy 846 63 12ms 18 Feb 2023 888th amiralitaheri 846 63 12ms 23 Feb 2023 888th RuyiLi 846 63 15ms 1 Apr 2023 888th TaserTheFox 🇺🇸 846 63 15ms 25 May 2023 888th pfysches-boop 846 63 14ms 6 Aug 2023 888th mhgockel 846 63 13ms 19 Aug 2023 888th NickTheEASDude 🇺🇸 846 63 12ms 18 Jan 2024 888th 823126 846 63 12ms 14 Nov 2024 888th Palladium02 846 63 11ms 12 May 2025 888th 4very 846 63 15ms 10 Jun 2025 888th Ultra814 846 63 12ms 21 Aug 2025 900th retrohun 846 64 4ms 6 Nov 2022 900th Re-Adventures 🇮🇳 846 64 4ms 7 Nov 2022 900th stellartux 846 64 4ms 26 Dec 2023 900th bac0id 846 64 4ms 29 Jun 2024 900th snoozingnewt 🇨🇦 846 64 4ms 1 Sep 2024 900th albanian-laundromat 🇺🇸 846 64 4ms 22 Sep 2025 906th NewDefectus 🇮🇱 846 73 2ms 6 May 2022 906th inventshah 846 73 2ms 12 Jun 2022 906th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 906th LorenzoDeGaspari 846 73 2ms 27 May 2024 906th Bpc-CPU 846 73 2ms 12 Jul 2025 906th AZTECCO 846 73 2ms 16 Sep 2025 906th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 906th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 906th albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 906th madex 🇩🇪 846 73 3ms 20 Mar 2026 916th Shanethegamer 🇺🇸 846 98 129ms 26 Oct 2022 916th emgordon154 846 98 128ms 18 Feb 2025 918th janAkali 🇷🇺 845 77 131ms 12 Feb 2025 919th MeWhenI 🇻🇦 844 71 110ms 13 Dec 2022 920th bschorno 844 92 438ms 12 Oct 2022 920th ChrisTheisen 844 92 407ms 14 Dec 2022 920th kellantech 844 92 406ms 4 Jul 2023 920th Mezzofloat 844 92 415ms 26 Aug 2023 920th Maximizer02 844 92 400ms 1 Oct 2023 920th madeforlosers 844 92 414ms 21 Nov 2024 920th ChromaChroma 844 92 410ms 7 Oct 2025 920th snoozingnewt 🇨🇦 844 92 447ms 8 Oct 2025 928th emplv 🇱🇻 844 124 25ms 31 Oct 2022 928th emgordon154 844 124 27ms 24 days ago 930th DialFrost 🇸🇬 843 66 85ms 7 Apr 2025 930th KasperKivimaeki 🇫🇮 843 66 8ms 22 Dec 2025 932nd Natanaelel 🇸🇪 843 87 1,512ms 15 Jun 2022 933rd SirBogman 🇺🇸 843 89 38ms 4 May 2022 934th GolfingSuccess 🇬🇷 843 109 13ms 19 Mar 2026 935th MeWhenI 🇻🇦 843 162 1,710ms 3 days ago 936th krcs 🇵🇱 842 53 295ms 9 May 2022 936th ryanlanegit 842 53 296ms 19 Jun 2022 936th sisyphus-ppcg 🇦🇺 842 53 462ms 15 Aug 2022 939th error256 842 81 68ms 13 Sep 2024 940th CLOStrophobic 🇮🇹 842 89 42ms 14 Feb 2025 941st kmathis22 842 100 42ms 13 Nov 2025 942nd sean-niemann 🇺🇸 841 76 141ms 8 Oct 2024 943rd frankgraziano 840 66 4ms 20 Apr 2025 944th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 945th beardotpdf 840 99 422ms 12 Dec 2025 946th DialFrost 🇸🇬 839 56 1,181ms 1 Sep 2025 946th GolfingSuccess 🇬🇷 839 56 1,114ms 17 Feb 2026 948th eshilo-draper 839 75 96ms 6 Sep 2022 948th kmathis22 839 75 90ms 5 Sep 2025 950th Andriamanitra 🇫🇮 839 83 12ms 17 Apr 2023 950th Natanaelel 🇸🇪 839 83 12ms 8 Jul 2023 952nd dokutan 839 88 39ms 9 Jun 2024 953rd Steffan153 🇫🇮 839 97 30ms 18 Jan 2023 954th CatsAreFluffy 839 101 62ms 18 Feb 2023 954th annaproxy 839 101 62ms 9 May 2023 954th wojtekmal 839 101 69ms 15 Nov 2023 954th HumanoidCPU 839 101 64ms 6 May 2024 954th eMGeeneer 839 101 416ms 27 Jun 2024 954th bac0id 839 101 63ms 29 Jun 2024 954th michaelmoynihan 839 101 433ms 3 Sep 2025 First Prev 881–960 of 3,744 Next Last