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 601st primo-ppcg 🇹🇭 876 193 104ms 14 Aug 2025 602nd GrayJoKing 🇦🇺 875 84 53ms 19 Jun 2022 602nd primo-ppcg 🇹🇭 875 84 48ms 29 Jun 2022 604th Shanethegamer 🇺🇸 875 142 993ms 27 Mar 2025 604th DialFrost 🇸🇬 875 142 857ms 28 Mar 2025 604th emgordon154 875 142 910ms 10 Apr 2025 607th Shanethegamer 🇺🇸 874 51 405ms 15 May 2023 608th rucin93 🇵🇱 874 57 171ms 4 Aug 2024 608th dokutan 874 57 162ms 9 Aug 2024 610th c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 610th jackkav 874 61 11ms 26 Jun 2022 610th TechNolaByte 874 61 11ms 6 Jul 2022 610th Heathcorp 🇦🇺 874 61 10ms 17 Jul 2022 610th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 610th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 610th moikaturns 🇬🇧 874 61 14ms 25 Sep 2022 610th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 610th Mazn3k 874 61 10ms 1 Feb 2023 610th tvcv901 874 61 11ms 22 Mar 2023 610th unfinishedprogram 874 61 11ms 19 Jul 2023 610th snoozingnewt 🇺🇸 874 61 11ms 23 Sep 2023 610th funnyboy-roks 874 61 10ms 9 May 2024 610th bac0id 874 61 9ms 29 Jun 2024 610th madex 🇩🇪 874 61 11ms 9 Jul 2024 610th FortuiteMan 🇫🇷 874 61 10ms 10 Oct 2024 610th RobertHoeh 874 61 11ms 5 Apr 2025 610th LvLError 874 61 11ms 29 May 2025 610th Lv0Sys 🇵🇱 874 61 12ms 30 May 2025 610th miles-evan 874 61 13ms 5 Aug 2025 610th alexsave 874 61 12ms 11 days ago 631st Grrisly 874 74 4ms 25 Mar 2024 632nd snoozingnewt 🇺🇸 874 95 444ms 16 days ago 633rd NerdyMcNerd42 873 64 20ms 26 Oct 2022 633rd tpasfieldERAU 873 64 25ms 14 Nov 2022 633rd CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 633rd adamnielson42 🇺🇸 873 64 22ms 25 Apr 2023 633rd nathsou 🇫🇷 873 64 21ms 2 Sep 2023 633rd zwxzwxzwx21 873 64 24ms 30 Jan 2024 633rd steffan-polygolf 873 64 21ms 8 Mar 2024 633rd Jacob385 873 64 62ms 4 Apr 2024 633rd gallium-gonzollium 873 64 28ms 26 Aug 2024 633rd Babafaba 873 64 24ms 9 days ago 643rd johnnythedoggie 873 72 103ms 13 May 2022 643rd kaascevich 873 72 109ms 8 Jul 2025 645th DialFrost 🇸🇬 873 73 100ms 3 Jun 2025 646th Shanethegamer 🇺🇸 872 66 189ms 4 May 2022 646th scpchicken 🇵🇼 872 66 328ms 5 May 2022 646th sisyphus-ppcg 🇦🇺 872 66 170ms 6 May 2022 646th Natanaelel 🇸🇪 872 66 159ms 15 Jun 2022 646th Z-snails 872 66 339ms 27 Feb 2023 646th Jeremy-Stafford 872 66 333ms 27 Feb 2023 646th alomiF 872 66 367ms 1 Sep 2023 646th btnlq 872 66 144ms 17 Oct 2023 654th DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 654th stefangimmillaro 872 86 49ms 14 Jan 2025 656th c0d3-4-F00d 🇩🇪 872 89 344ms 5 May 2022 656th fkantelberg 872 89 401ms 15 Jul 2023 656th bac0id 872 89 363ms 26 Sep 2023 656th TRexOnGit 872 89 360ms 16 Feb 2024 656th arcpolaris 872 89 353ms 18 Nov 2024 661st nwellnhof 🇩🇪 872 111 276ms 4 May 2022 661st stefangimmillaro 872 111 289ms 26 Sep 2023 661st kkoenig 872 111 285ms 4 Jan 2024 664th HPWiz 🇳🇿 871 49 259ms 4 May 2022 664th JayXon 🇺🇸 871 49 274ms 5 May 2022 664th Steffan153 🇫🇮 871 49 303ms 10 Dec 2022 664th ovs-code 🇩🇪 871 49 407ms 24 Oct 2023 664th sean-niemann 🇺🇸 871 49 254ms 12 Jul 2024 669th dokutan 871 62 5ms 28 Apr 2025 670th inventshah 871 97 63ms 6 May 2022 670th roupiq 🇵🇱 871 97 56ms 22 Nov 2023 672nd janbehrens 🇩🇪 870 90 442ms 21 Apr 2023 672nd Yewzir 🇧🇪 870 90 463ms 22 Apr 2023 672nd DialFrost 🇸🇬 870 90 440ms 6 Nov 2023 672nd Ripick 870 90 439ms 27 Nov 2024 First Prev 601–675 of 3,388 Next Last