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 Minesweeper 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 Binary Lambda Calculus 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 601st ovs-code 🇩🇪 878 73 300ms 22 Jul 2023 602nd Shanethegamer 🇺🇸 878 81 19ms 19 Dec 2023 602nd emgordon154 878 81 26ms 29 Jul 2025 604th GrayJoKing 🇦🇺 877 72 679ms 31 May 2022 604th Shanethegamer 🇺🇸 877 72 646ms 1 Jun 2022 604th Steffan153 🇫🇮 877 72 617ms 10 Dec 2022 607th steffan-polygolf 877 74 130ms 14 Feb 2024 608th mousetail 🇳🇱 876 40 73ms 29 Aug 2025 609th primo-ppcg 🇹🇭 876 193 105ms 14 Aug 2025 610th Grrisly 875 74 4ms 25 Mar 2024 611th GrayJoKing 🇦🇺 875 84 53ms 19 Jun 2022 611th primo-ppcg 🇹🇭 875 84 48ms 29 Jun 2022 613th Shanethegamer 🇺🇸 875 142 1,171ms 27 Mar 2025 613th DialFrost 🇸🇬 875 142 1,122ms 28 Mar 2025 613th emgordon154 875 142 1,348ms 10 Apr 2025 616th Shanethegamer 🇺🇸 874 51 405ms 15 May 2023 617th rucin93 🇵🇱 874 57 139ms 4 Aug 2024 617th dokutan 874 57 130ms 9 Aug 2024 619th c0d3-4-F00d 🇩🇪 874 61 9ms 6 May 2022 619th jackkav 874 61 10ms 26 Jun 2022 619th TechNolaByte 874 61 10ms 6 Jul 2022 619th Heathcorp 🇦🇺 874 61 10ms 17 Jul 2022 619th C0de5mith 🇺🇸 874 61 10ms 3 Aug 2022 619th sebipopa 🇷🇴 874 61 11ms 18 Aug 2022 619th moikaturns 🇬🇧 874 61 11ms 25 Sep 2022 619th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 619th Mazn3k 874 61 10ms 1 Feb 2023 619th tvcv901 874 61 10ms 22 Mar 2023 619th unfinishedprogram 874 61 10ms 19 Jul 2023 619th snoozingnewt 🇺🇸 874 61 11ms 23 Sep 2023 619th funnyboy-roks 874 61 9ms 9 May 2024 619th bac0id 874 61 11ms 29 Jun 2024 619th madex 🇩🇪 874 61 11ms 9 Jul 2024 619th FortuiteMan 🇫🇷 874 61 10ms 10 Oct 2024 619th RobertHoeh 874 61 10ms 5 Apr 2025 619th LvLError 874 61 10ms 29 May 2025 619th Lv0Sys 🇵🇱 874 61 10ms 30 May 2025 619th miles-evan 874 61 10ms 5 Aug 2025 619th alexsave 874 61 14ms 13 Oct 2025 640th snoozingnewt 🇺🇸 874 95 341ms 8 Oct 2025 641st NerdyMcNerd42 873 64 20ms 26 Oct 2022 641st tpasfieldERAU 873 64 25ms 14 Nov 2022 641st CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 641st adamnielson42 🇺🇸 873 64 22ms 25 Apr 2023 641st nathsou 🇫🇷 873 64 21ms 2 Sep 2023 641st zwxzwxzwx21 873 64 24ms 30 Jan 2024 641st steffan-polygolf 873 64 21ms 8 Mar 2024 641st Jacob385 873 64 62ms 4 Apr 2024 641st gallium-gonzollium 873 64 28ms 26 Aug 2024 650th johnnythedoggie 873 72 88ms 13 May 2022 650th kaascevich 873 72 81ms 8 Jul 2025 652nd DialFrost 🇸🇬 873 73 100ms 3 Jun 2025 653rd HPWiz 🇳🇿 872 49 259ms 4 May 2022 653rd JayXon 🇺🇸 872 49 274ms 5 May 2022 653rd Steffan153 🇫🇮 872 49 303ms 10 Dec 2022 653rd ovs-code 🇩🇪 872 49 407ms 24 Oct 2023 653rd sean-niemann 🇺🇸 872 49 254ms 12 Jul 2024 658th dokutan 872 62 5ms 28 Apr 2025 659th Shanethegamer 🇺🇸 872 66 189ms 4 May 2022 659th scpchicken 🇵🇼 872 66 328ms 5 May 2022 659th sisyphus-ppcg 🇦🇺 872 66 170ms 6 May 2022 659th Natanaelel 🇸🇪 872 66 159ms 15 Jun 2022 659th Z-snails 872 66 339ms 27 Feb 2023 659th Jeremy-Stafford 872 66 333ms 27 Feb 2023 659th alomiF 872 66 367ms 1 Sep 2023 659th btnlq 872 66 144ms 17 Oct 2023 667th DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 667th stefangimmillaro 872 86 49ms 14 Jan 2025 669th c0d3-4-F00d 🇩🇪 872 89 344ms 5 May 2022 669th fkantelberg 872 89 401ms 15 Jul 2023 669th bac0id 872 89 363ms 26 Sep 2023 669th TRexOnGit 872 89 360ms 16 Feb 2024 673rd nwellnhof 🇩🇪 872 111 262ms 4 May 2022 673rd stefangimmillaro 872 111 259ms 26 Sep 2023 673rd kkoenig 872 111 256ms 4 Jan 2024 First Prev 601–675 of 3,423 Next Last