Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Morse Decoder Morse Encoder 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Morse Decoder Morse Encoder 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 526th lynn 886 65 316ms 5 May 2022 526th GrayJoKing 🇦🇺 886 65 327ms 5 May 2022 526th Sakisan 🇧🇪 886 65 6 May 2022 526th JayXon 🇺🇸 886 65 366ms 17 Oct 2022 526th Steffan153 🇫🇮 886 65 172ms 12 Nov 2022 526th tobeannouncd 886 65 331ms 25 Apr 2025 526th sean-niemann 🇺🇸 886 65 174ms 9 Jun 2025 533rd stefangimmillaro 886 71 98ms 2 Oct 2022 533rd Steffan153 🇫🇮 886 71 103ms 23 Feb 2023 533rd Shanethegamer 🇺🇸 886 71 98ms 16 May 2023 533rd sean-niemann 🇺🇸 886 71 99ms 12 Jul 2024 537th Shanethegamer 🇺🇸 886 72 90ms 8 May 2025 537th edsrzf 🇳🇿 886 72 103ms 4 Jul 2025 539th RockOfStone 886 73 2 days ago 540th JayXon 🇺🇸 886 74 14 Nov 2024 541st canissimia 🇦🇶 886 110 3,068ms 20 Feb 2023 542nd canissimia 🇦🇶 886 204 16ms 25 Nov 2023 543rd Shanethegamer 🇺🇸 885 61 6ms 31 Oct 2022 543rd MeWhenI 🇻🇦 885 61 5ms 4 Nov 2022 545th Steffan153 🇫🇮 884 52 7ms 31 Dec 2022 546th DialFrost 🇸🇬 884 95 32ms 10 Dec 2024 547th GrayJoKing 🇦🇺 883 77 76ms 13 Sep 2024 548th albanian-laundromat 883 94 27 days ago 548th kmathis22 883 94 7 days ago 550th jared-hughes 883 130 23ms 15 Dec 2024 551st DialFrost 🇸🇬 882 76 91ms 17 Mar 2025 552nd primo-ppcg 🇹🇭 882 85 43ms 14 Jan 2025 552nd MeWhenI 🇻🇦 882 85 44ms 21 Apr 2025 554th SiestaGuru 882 88 325ms 9 Jan 2023 554th rifatx 882 88 312ms 5 Jul 2024 554th kmathis22 882 88 26 days ago 557th stefangimmillaro 881 53 38ms 2 Oct 2022 557th Haksell 🇦🇶 881 53 40ms 22 Feb 2023 559th GrayJoKing 🇦🇺 881 70 2ms 6 May 2022 559th ovs-code 🇩🇪 881 70 2ms 8 Oct 2023 559th 09cf 881 70 13ms 8 Oct 2023 559th saito-ta 🇯🇵 881 70 3ms 21 Dec 2023 559th sean-niemann 🇺🇸 881 70 3ms 10 Jul 2024 559th KasperKivimaeki 🇫🇮 881 70 6ms 8 Aug 2025 565th nipzu 881 94 145ms 17 May 2022 565th Natanaelel 🇸🇪 881 94 130ms 17 Jun 2022 565th nkoppel 881 94 133ms 19 Oct 2022 565th ovs-code 🇩🇪 881 94 145ms 21 Jun 2023 565th mousetail 🇳🇱 881 94 151ms 12 Jan 2024 570th m-tkach 🇺🇦 881 112 82ms 22 Jun 2025 571st sisyphus-ppcg 🇦🇺 880 40 31 Jan 2023 571st sean-niemann 🇺🇸 880 40 8 Mar 2025 573rd primo-ppcg 🇹🇭 880 52 213ms 5 May 2022 573rd dvargas46 🇺🇸 880 52 83ms 22 Dec 2022 575th DialFrost 🇸🇬 880 56 1 Sep 2025 576th ovs-code 🇩🇪 880 89 457ms 24 Jul 2024 576th jipsong 🇩🇪 880 89 467ms 7 Apr 2025 578th Irratix 🇳🇱 880 96 63ms 4 May 2022 578th MeWhenI 🇻🇦 880 96 61ms 1 Jun 2022 578th janbehrens 🇩🇪 880 96 65ms 21 Apr 2023 578th Shanethegamer 🇺🇸 880 96 66ms 15 May 2023 578th Yewzir 🇧🇪 880 96 72ms 11 Nov 2023 578th MateuszPietrzak 🇵🇱 880 96 63ms 18 Nov 2023 578th kkoenig 880 96 63ms 21 Dec 2023 578th BlankSpruce 880 96 63ms 20 Aug 2024 578th fuzzylojik-golf 🇺🇸 880 96 70ms 14 Jun 2025 587th emplv 🇱🇻 880 110 310ms 5 May 2022 587th Shanethegamer 🇺🇸 880 110 261ms 21 Nov 2023 587th edsrzf 🇳🇿 880 110 306ms 28 Nov 2024 587th targrik 880 110 279ms 30 Jun 2025 591st ovs-code 🇩🇪 878 73 300ms 22 Jul 2023 592nd Shanethegamer 🇺🇸 878 81 19ms 19 Dec 2023 592nd emgordon154 878 81 26ms 29 Jul 2025 594th GrayJoKing 🇦🇺 877 72 31 May 2022 594th Shanethegamer 🇺🇸 877 72 1 Jun 2022 594th Steffan153 🇫🇮 877 72 10 Dec 2022 597th steffan-polygolf 877 74 150ms 14 Feb 2024 598th mousetail 🇳🇱 876 40 73ms 29 Aug 2025 599th primo-ppcg 🇹🇭 876 193 104ms 14 Aug 2025 600th GrayJoKing 🇦🇺 875 84 19 Jun 2022 First Prev 526–600 of 3,385 Next Last