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 600th primo-ppcg 🇹🇭 875 84 29 Jun 2022 602nd Shanethegamer 🇺🇸 875 142 27 Mar 2025 602nd DialFrost 🇸🇬 875 142 28 Mar 2025 602nd emgordon154 875 142 10 Apr 2025 605th Shanethegamer 🇺🇸 874 51 405ms 15 May 2023 606th rucin93 🇵🇱 874 57 171ms 4 Aug 2024 606th dokutan 874 57 162ms 9 Aug 2024 608th c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 608th jackkav 874 61 11ms 26 Jun 2022 608th TechNolaByte 874 61 11ms 6 Jul 2022 608th Heathcorp 🇦🇺 874 61 10ms 17 Jul 2022 608th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 608th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 608th moikaturns 🇬🇧 874 61 14ms 25 Sep 2022 608th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 608th Mazn3k 874 61 10ms 1 Feb 2023 608th tvcv901 874 61 11ms 22 Mar 2023 608th unfinishedprogram 874 61 11ms 19 Jul 2023 608th snoozingnewt 🇺🇸 874 61 11ms 23 Sep 2023 608th funnyboy-roks 874 61 10ms 9 May 2024 608th bac0id 874 61 9ms 29 Jun 2024 608th madex 🇩🇪 874 61 11ms 9 Jul 2024 608th FortuiteMan 🇫🇷 874 61 10ms 10 Oct 2024 608th RobertHoeh 874 61 11ms 5 Apr 2025 608th LvLError 874 61 11ms 29 May 2025 608th Lv0Sys 🇵🇱 874 61 12ms 30 May 2025 608th miles-evan 874 61 13ms 5 Aug 2025 608th alexsave 874 61 12ms 9 days ago 629th Grrisly 874 74 4ms 25 Mar 2024 630th snoozingnewt 🇺🇸 874 95 444ms 14 days ago 631st NerdyMcNerd42 873 64 20ms 26 Oct 2022 631st tpasfieldERAU 873 64 25ms 14 Nov 2022 631st CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 631st adamnielson42 🇺🇸 873 64 22ms 25 Apr 2023 631st nathsou 🇫🇷 873 64 21ms 2 Sep 2023 631st zwxzwxzwx21 873 64 24ms 30 Jan 2024 631st steffan-polygolf 873 64 21ms 8 Mar 2024 631st Jacob385 873 64 62ms 4 Apr 2024 631st gallium-gonzollium 873 64 28ms 26 Aug 2024 631st Babafaba 873 64 24ms 6 days ago 641st johnnythedoggie 873 72 103ms 13 May 2022 641st kaascevich 873 72 109ms 8 Jul 2025 643rd DialFrost 🇸🇬 873 73 100ms 3 Jun 2025 644th Shanethegamer 🇺🇸 872 66 189ms 4 May 2022 644th scpchicken 🇵🇼 872 66 328ms 5 May 2022 644th sisyphus-ppcg 🇦🇺 872 66 170ms 6 May 2022 644th Natanaelel 🇸🇪 872 66 159ms 15 Jun 2022 644th Z-snails 872 66 339ms 27 Feb 2023 644th Jeremy-Stafford 872 66 333ms 27 Feb 2023 644th alomiF 872 66 367ms 1 Sep 2023 644th btnlq 872 66 144ms 17 Oct 2023 652nd DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 652nd stefangimmillaro 872 86 49ms 14 Jan 2025 654th c0d3-4-F00d 🇩🇪 872 89 344ms 5 May 2022 654th fkantelberg 872 89 401ms 15 Jul 2023 654th bac0id 872 89 363ms 26 Sep 2023 654th TRexOnGit 872 89 360ms 16 Feb 2024 654th arcpolaris 872 89 353ms 18 Nov 2024 659th nwellnhof 🇩🇪 872 111 278ms 4 May 2022 659th stefangimmillaro 872 111 325ms 26 Sep 2023 659th kkoenig 872 111 287ms 4 Jan 2024 662nd HPWiz 🇳🇿 871 49 4 May 2022 662nd JayXon 🇺🇸 871 49 5 May 2022 662nd Steffan153 🇫🇮 871 49 10 Dec 2022 662nd ovs-code 🇩🇪 871 49 24 Oct 2023 662nd sean-niemann 🇺🇸 871 49 12 Jul 2024 667th dokutan 871 62 5ms 28 Apr 2025 668th inventshah 871 97 63ms 6 May 2022 668th roupiq 🇵🇱 871 97 56ms 22 Nov 2023 670th janbehrens 🇩🇪 870 90 442ms 21 Apr 2023 670th Yewzir 🇧🇪 870 90 463ms 22 Apr 2023 670th DialFrost 🇸🇬 870 90 440ms 6 Nov 2023 670th Ripick 870 90 439ms 27 Nov 2024 674th GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 674th emplv 🇱🇻 869 71 3ms 5 May 2022 First Prev 601–675 of 3,385 Next Last