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) Taxicab Numbers 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 Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 893rd 823126 846 63 11ms 14 Nov 2024 893rd Palladium02 846 63 11ms 12 May 2025 893rd 4very 846 63 14ms 10 Jun 2025 893rd Ultra814 846 63 11ms 21 Aug 2025 905th NewDefectus 🇮🇱 846 73 2ms 6 May 2022 905th inventshah 846 73 2ms 12 Jun 2022 905th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 905th LorenzoDeGaspari 846 73 2ms 27 May 2024 905th Bpc-CPU 846 73 2ms 12 Jul 2025 905th AZTECCO 846 73 2ms 16 Sep 2025 905th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 905th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 905th albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 905th madex 🇩🇪 846 73 2ms 20 Mar 2026 915th Shanethegamer 🇺🇸 846 98 129ms 26 Oct 2022 915th emgordon154 846 98 128ms 18 Feb 2025 917th retrohun 845 64 4ms 6 Nov 2022 917th Re-Adventures 🇮🇳 845 64 4ms 7 Nov 2022 917th stellartux 845 64 4ms 26 Dec 2023 917th bac0id 845 64 4ms 29 Jun 2024 917th snoozingnewt 🇨🇦 845 64 4ms 1 Sep 2024 917th albanian-laundromat 🇺🇸 845 64 4ms 22 Sep 2025 923rd janAkali 🇷🇺 844 77 137ms 12 Feb 2025 924th bschorno 844 92 410ms 12 Oct 2022 924th ChrisTheisen 844 92 423ms 14 Dec 2022 924th kellantech 844 92 395ms 4 Jul 2023 924th Mezzofloat 844 92 417ms 26 Aug 2023 924th Maximizer02 844 92 428ms 1 Oct 2023 924th madeforlosers 844 92 366ms 21 Nov 2024 924th ChromaChroma 844 92 398ms 7 Oct 2025 924th snoozingnewt 🇨🇦 844 92 433ms 8 Oct 2025 932nd DialFrost 🇸🇬 843 66 85ms 7 Apr 2025 932nd KasperKivimaeki 🇫🇮 843 66 8ms 22 Dec 2025 934th MeWhenI 🇻🇦 843 71 111ms 13 Dec 2022 935th Natanaelel 🇸🇪 843 87 1,558ms 15 Jun 2022 936th emplv 🇱🇻 843 124 25ms 31 Oct 2022 936th emgordon154 843 124 27ms 29 Mar 2026 938th krcs 🇵🇱 842 53 319ms 9 May 2022 938th ryanlanegit 842 53 311ms 19 Jun 2022 938th sisyphus-ppcg 🇦🇺 842 53 493ms 15 Aug 2022 941st SirBogman 🇺🇸 842 89 42ms 4 May 2022 942nd error256 841 81 68ms 13 Sep 2024 943rd CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 944th kmathis22 841 100 42ms 13 Nov 2025 945th sean-niemann 🇺🇸 840 76 141ms 8 Oct 2024 946th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 947th beardotpdf 840 99 436ms 12 Dec 2025 948th GolfingSuccess 🇬🇷 840 109 13ms 19 Mar 2026 949th MeWhenI 🇻🇦 840 162 1,710ms 12 days ago 950th frankgraziano 839 66 4ms 20 Apr 2025 951st Yewzir 🇧🇪 839 69 126ms 24 Dec 2024 951st albanian-laundromat 🇺🇸 839 69 106ms 27 Feb 2026 953rd eshilo-draper 839 75 96ms 6 Sep 2022 953rd kmathis22 839 75 90ms 5 Sep 2025 955th CatsAreFluffy 839 101 62ms 18 Feb 2023 955th annaproxy 839 101 62ms 9 May 2023 955th wojtekmal 839 101 63ms 15 Nov 2023 955th HumanoidCPU 839 101 64ms 6 May 2024 955th eMGeeneer 839 101 416ms 27 Jun 2024 955th bac0id 839 101 63ms 29 Jun 2024 955th michaelmoynihan 839 101 433ms 3 Sep 2025 955th snoozingnewt 🇨🇦 839 101 452ms 6 Oct 2025 963rd Codsilla 🇨🇦 838 51 241ms 1 Jul 2022 964th DialFrost 🇸🇬 838 56 890ms 1 Sep 2025 964th GolfingSuccess 🇬🇷 838 56 831ms 17 Feb 2026 966th steffan-polygolf 838 81 9ms 23 Feb 2023 966th FranklinJiaChen 838 81 9ms 23 Feb 2026 968th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 968th Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 970th dokutan 838 88 39ms 9 Jun 2024 971st Steffan153 🇫🇮 838 97 30ms 18 Jan 2023 972nd DialFrost 🇸🇬 837 83 17ms 1 Jan 2026 973rd scpchicken 🇵🇼 836 55 10ms 4 May 2022 973rd SirBogman 🇺🇸 836 55 6ms 5 May 2022 973rd Shanethegamer 🇺🇸 836 55 6ms 19 May 2023 973rd DialFrost 🇸🇬 836 55 11ms 14 Feb 2025 977th SirBogman 🇺🇸 835 36 9ms 5 May 2022 977th Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 977th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 977th codereport 🇨🇦 835 36 9ms 1 Jun 2024 977th GolfinK 835 36 8ms 21 Nov 2024 977th lifthrasiir 🇰🇷 835 36 9ms 1 Dec 2024 977th GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 977th scpchicken 🇵🇼 835 36 8ms 10 Mar 2026 985th moustave 835 67 23ms 7 Nov 2024 986th inverseLorentz 🇦🇺 835 69 154ms 3 Jun 2024 986th CLOStrophobic 🇮🇹 835 69 170ms 28 May 2025 988th Alex-x90 🇺🇸 835 74 2ms 4 Dec 2022 988th undersquire 835 74 2ms 24 Jun 2023 988th rdmsr 835 74 2ms 24 Jun 2023 988th Bmrl7 835 74 2ms 9 Jul 2023 988th Vinterion 835 74 2ms 6 Nov 2023 988th namelessiw 835 74 2ms 28 Dec 2023 988th Jonatan6 🇩🇰 835 74 2ms 15 Mar 2024 988th Mandrzejy 🇵🇱 835 74 2ms 12 Apr 2024 988th kaurakeksi 🇫🇮 835 74 2ms 29 Dec 2024 997th p-vf 🇨🇭 835 93 406ms 24 Jun 2022 997th Smetalo 835 93 418ms 25 Aug 2022 997th malworthy 835 93 381ms 19 Aug 2024 1,000th nwellnhof 🇩🇪 835 117 1,730ms 16 Nov 2022 First Prev 901–1,000 of 3,671 Next Last