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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 879th Natanaelel 🇸🇪 846 73 3ms 15 Jun 2022 879th Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 879th LorenzoDeGaspari 846 73 2ms 27 May 2024 879th Bpc-CPU 846 73 2ms 12 Jul 2025 879th AZTECCO 846 73 2ms 16 Sep 2025 879th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 879th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 879th albanian-laundromat 846 73 3ms 20 Jan 2026 889th jared-hughes 846 100 58ms 20 Jul 2022 889th ZakkkkAttackkkk 🇵🇭 846 100 56ms 10 Aug 2022 889th Walter225 846 100 58ms 25 Jul 2023 892nd Natanaelel 🇸🇪 845 57 476ms 17 Jan 2024 892nd Kacarott 🇦🇺 845 57 430ms 10 Sep 2024 892nd albanian-laundromat 845 57 526ms 7 Oct 2025 895th retrohun 845 64 6ms 6 Nov 2022 895th Re-Adventures 🇮🇳 845 64 5ms 7 Nov 2022 895th stellartux 845 64 5ms 26 Dec 2023 895th bac0id 845 64 5ms 29 Jun 2024 895th snoozingnewt 🇨🇦 845 64 5ms 1 Sep 2024 895th albanian-laundromat 845 64 5ms 22 Sep 2025 901st Shanethegamer 🇺🇸 845 98 121ms 26 Oct 2022 901st emgordon154 845 98 121ms 18 Feb 2025 903rd janAkali 🇷🇺 844 77 123ms 12 Feb 2025 904th bschorno 844 92 395ms 12 Oct 2022 904th ChrisTheisen 844 92 371ms 14 Dec 2022 904th kellantech 844 92 408ms 4 Jul 2023 904th Mezzofloat 844 92 405ms 26 Aug 2023 904th Maximizer02 844 92 419ms 1 Oct 2023 904th madeforlosers 844 92 452ms 21 Nov 2024 904th ChromaChroma 844 92 407ms 7 Oct 2025 904th snoozingnewt 🇨🇦 844 92 422ms 8 Oct 2025 912th DialFrost 🇸🇬 843 66 103ms 7 Apr 2025 912th KasperKivimaeki 🇫🇮 843 66 6ms 22 Dec 2025 914th krcs 🇵🇱 842 53 281ms 9 May 2022 914th ryanlanegit 842 53 312ms 19 Jun 2022 914th sisyphus-ppcg 🇦🇺 842 53 453ms 15 Aug 2022 917th MeWhenI 🇻🇦 842 71 106ms 13 Dec 2022 918th SirBogman 🇺🇸 842 89 38ms 4 May 2022 919th error256 841 81 68ms 13 Sep 2024 920th CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 921st kmathis22 841 100 31ms 13 Nov 2025 922nd emplv 🇱🇻 841 124 25ms 31 Oct 2022 923rd raszpi 🇭🇺 840 77 112ms 1 Sep 2023 924th MeWhenI 🇻🇦 840 164 1,639ms 7 Nov 2025 925th frankgraziano 839 66 4ms 20 Apr 2025 926th eshilo-draper 839 75 83ms 6 Sep 2022 926th kmathis22 839 75 79ms 5 Sep 2025 928th sean-niemann 🇺🇸 839 76 97ms 8 Oct 2024 929th beardotpdf 839 99 422ms 12 Dec 2025 930th Codsilla 🇨🇦 838 51 263ms 1 Jul 2022 931st Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 931st Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 933rd Steffan153 🇫🇮 838 97 29ms 18 Jan 2023 934th CatsAreFluffy 838 101 53ms 18 Feb 2023 934th annaproxy 838 101 57ms 9 May 2023 934th wojtekmal 838 101 56ms 15 Nov 2023 934th HumanoidCPU 838 101 60ms 6 May 2024 934th eMGeeneer 838 101 406ms 27 Jun 2024 934th bac0id 838 101 57ms 29 Jun 2024 934th michaelmoynihan 838 101 413ms 3 Sep 2025 934th snoozingnewt 🇨🇦 838 101 417ms 6 Oct 2025 942nd Shanethegamer 🇺🇸 837 58 1,035ms 17 Sep 2025 943rd steffan-polygolf 837 81 10ms 23 Feb 2023 944th ovs-code 🇩🇪 837 85 16ms 11 Dec 2023 945th dokutan 837 88 39ms 9 Jun 2024 946th scpchicken 🇵🇼 836 55 10ms 4 May 2022 946th SirBogman 🇺🇸 836 55 6ms 5 May 2022 946th Shanethegamer 🇺🇸 836 55 6ms 19 May 2023 946th DialFrost 🇸🇬 836 55 10ms 14 Feb 2025 950th SirBogman 🇺🇸 835 36 14ms 5 May 2022 950th Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 950th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 950th codereport 🇨🇦 835 36 9ms 1 Jun 2024 950th GolfinK 835 36 9ms 21 Nov 2024 950th lifthrasiir 🇰🇷 835 36 10ms 1 Dec 2024 950th GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 957th ChiefChippy2 835 56 40ms 4 May 2022 957th aksyristos 835 56 39ms 29 Jan 2023 957th anter69 🇭🇺 835 56 38ms 12 Feb 2024 957th 3dm4n 🇫🇮 835 56 36ms 11 Mar 2024 First Prev 881–960 of 3,556 Next Last