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 Dragon Curve 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 Dragon Curve 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 879th Walter225 847 100 62ms 25 Jul 2023 882nd MeWhenI 🇻🇦 846 26 159ms 25 Aug 2022 882nd AlephSquirrel 846 26 163ms 6 Jan 2023 882nd ovs-code 🇩🇪 846 26 367ms 5 May 2024 882nd saito-ta 🇯🇵 846 26 154ms 12 Dec 2024 886th Natanaelel 🇸🇪 846 57 453ms 17 Jan 2024 886th Kacarott 🇦🇺 846 57 461ms 10 Sep 2024 886th albanian-laundromat 🇺🇸 846 57 463ms 7 Oct 2025 889th randolchance 846 63 12ms 8 Jan 2023 889th CatsAreFluffy 846 63 14ms 18 Feb 2023 889th amiralitaheri 846 63 13ms 23 Feb 2023 889th RuyiLi 846 63 13ms 1 Apr 2023 889th TaserTheFox 🇺🇸 846 63 15ms 25 May 2023 889th pfysches-boop 846 63 12ms 6 Aug 2023 889th mhgockel 846 63 14ms 19 Aug 2023 889th NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 889th 823126 846 63 15ms 14 Nov 2024 889th Palladium02 846 63 11ms 12 May 2025 889th 4very 846 63 10ms 10 Jun 2025 889th Ultra814 846 63 13ms 21 Aug 2025 901st retrohun 846 64 4ms 6 Nov 2022 901st Re-Adventures 🇮🇳 846 64 4ms 7 Nov 2022 901st stellartux 846 64 4ms 26 Dec 2023 901st bac0id 846 64 4ms 29 Jun 2024 901st snoozingnewt 🇨🇦 846 64 4ms 1 Sep 2024 901st albanian-laundromat 🇺🇸 846 64 4ms 22 Sep 2025 907th NewDefectus 🇮🇱 846 73 2ms 6 May 2022 907th inventshah 846 73 2ms 12 Jun 2022 907th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 907th LorenzoDeGaspari 846 73 2ms 27 May 2024 907th Bpc-CPU 846 73 2ms 12 Jul 2025 907th AZTECCO 846 73 2ms 16 Sep 2025 907th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 907th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 907th albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 907th madex 🇩🇪 846 73 3ms 20 Mar 2026 917th Shanethegamer 🇺🇸 846 98 129ms 26 Oct 2022 917th emgordon154 846 98 128ms 18 Feb 2025 919th janAkali 🇷🇺 845 77 131ms 12 Feb 2025 920th MeWhenI 🇻🇦 844 71 110ms 13 Dec 2022 921st bschorno 844 92 410ms 12 Oct 2022 921st ChrisTheisen 844 92 423ms 14 Dec 2022 921st kellantech 844 92 395ms 4 Jul 2023 921st Mezzofloat 844 92 417ms 26 Aug 2023 921st Maximizer02 844 92 428ms 1 Oct 2023 921st madeforlosers 844 92 366ms 21 Nov 2024 921st ChromaChroma 844 92 398ms 7 Oct 2025 921st snoozingnewt 🇨🇦 844 92 433ms 8 Oct 2025 929th emplv 🇱🇻 844 124 25ms 31 Oct 2022 929th emgordon154 844 124 27ms 25 days ago 931st DialFrost 🇸🇬 843 66 85ms 7 Apr 2025 931st KasperKivimaeki 🇫🇮 843 66 8ms 22 Dec 2025 933rd Natanaelel 🇸🇪 843 87 1,558ms 15 Jun 2022 934th SirBogman 🇺🇸 843 89 38ms 4 May 2022 935th GolfingSuccess 🇬🇷 843 109 13ms 19 Mar 2026 936th MeWhenI 🇻🇦 843 162 1,710ms 4 days ago 937th krcs 🇵🇱 842 53 319ms 9 May 2022 937th ryanlanegit 842 53 311ms 19 Jun 2022 937th sisyphus-ppcg 🇦🇺 842 53 493ms 15 Aug 2022 940th error256 842 81 68ms 13 Sep 2024 941st CLOStrophobic 🇮🇹 842 89 42ms 14 Feb 2025 942nd kmathis22 842 100 42ms 13 Nov 2025 943rd sean-niemann 🇺🇸 841 76 141ms 8 Oct 2024 944th frankgraziano 840 66 4ms 20 Apr 2025 945th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 946th beardotpdf 840 99 422ms 12 Dec 2025 947th DialFrost 🇸🇬 839 56 1,181ms 1 Sep 2025 947th GolfingSuccess 🇬🇷 839 56 1,114ms 17 Feb 2026 949th Yewzir 🇧🇪 839 69 126ms 24 Dec 2024 949th albanian-laundromat 🇺🇸 839 69 106ms 27 Feb 2026 951st eshilo-draper 839 75 96ms 6 Sep 2022 951st kmathis22 839 75 90ms 5 Sep 2025 953rd Andriamanitra 🇫🇮 839 83 12ms 17 Apr 2023 953rd Natanaelel 🇸🇪 839 83 12ms 8 Jul 2023 955th dokutan 839 88 39ms 9 Jun 2024 956th Steffan153 🇫🇮 839 97 30ms 18 Jan 2023 957th CatsAreFluffy 839 101 62ms 18 Feb 2023 957th annaproxy 839 101 62ms 9 May 2023 957th wojtekmal 839 101 69ms 15 Nov 2023 957th HumanoidCPU 839 101 64ms 6 May 2024 First Prev 881–960 of 3,746 Next Last