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 1st Lydxn 🇨🇦 1,000 22 165ms 12 Sep 2022 2nd khvdm 980 57 42ms 15 Sep 2024 3rd ovs-code 🇩🇪 969 31 2,396ms 8 Mar 2023 4th Irratix 🇳🇱 969 55 15ms 4 May 2022 4th nwellnhof 🇩🇪 969 55 13ms 4 May 2022 4th m-tkach 🇺🇦 969 55 13ms 5 May 2022 4th Lydxn 🇨🇦 969 55 11ms 5 May 2022 4th JayXon 🇺🇸 969 55 16ms 5 May 2022 4th emplv 🇱🇻 969 55 11ms 5 May 2022 4th prplz 🇦🇺 969 55 11ms 5 May 2022 4th primo-ppcg 🇹🇭 969 55 11ms 5 May 2022 4th GrayJoKing 🇦🇺 969 55 12ms 6 May 2022 4th ovs-code 🇩🇪 969 55 12ms 6 May 2022 4th sisyphus-ppcg 🇦🇺 969 55 12ms 7 May 2022 4th pavelb 969 55 12ms 8 Aug 2022 4th stefangimmillaro 969 55 11ms 2 Oct 2022 4th MeWhenI 🇻🇦 969 55 10ms 2 Oct 2022 4th Steffan153 🇫🇮 969 55 11ms 12 Nov 2022 4th Bubbler-4 969 55 11ms 14 Nov 2022 4th lukegustafson 🇺🇸 969 55 11ms 14 Nov 2023 4th trinityy-7 969 55 11ms 17 Dec 2023 4th xsot 🇸🇬 969 55 12ms 1 Jun 2024 4th vlpx 🇫🇮 969 55 11ms 18 Jun 2024 4th rucin93 🇵🇱 969 55 10ms 10 Jul 2024 4th sean-niemann 🇺🇸 969 55 11ms 10 Jul 2024 4th pardouin 🇫🇷 969 55 11ms 7 Aug 2024 4th Liniarc 969 55 13ms 11 Dec 2024 4th targrik 969 55 9ms 10 Feb 2025 4th helbling 🇨🇭 969 55 10ms 12 May 2025 30th Lydxn 🇨🇦 964 64 9ms 21 Dec 2023 30th rhdqor213 964 64 7ms 10 Aug 2024 32nd Lydxn 🇨🇦 963 58 51ms 4 May 2022 32nd JayXon 🇺🇸 963 58 48ms 7 Mar 2023 34th ovs-code 🇩🇪 954 34 7 Mar 2023 35th Lydxn 🇨🇦 953 49 39ms 4 May 2022 35th JayXon 🇺🇸 953 49 43ms 17 Oct 2022 35th GrayJoKing 🇦🇺 953 49 49ms 15 Nov 2022 35th radarek 🇵🇱 953 49 219ms 26 Aug 2025 39th akshatj27 🇦🇶 952 56 12ms 4 May 2022 39th didion0 🇺🇸 952 56 12ms 5 May 2022 39th NewDefectus 🇮🇱 952 56 11ms 6 May 2022 39th lynn 952 56 12ms 6 May 2022 39th uttumuttu 🇫🇮 952 56 11ms 24 May 2022 39th jared-hughes 952 56 11ms 6 Jul 2022 39th 051 🇸🇬 952 56 14ms 8 Aug 2022 39th BambooleanLogic 🇸🇪 952 56 12ms 12 Oct 2022 39th makinde 952 56 12ms 21 Oct 2022 39th DialFrost 🇸🇬 952 56 11ms 14 Nov 2022 39th AlephSquirrel 952 56 11ms 15 Feb 2023 39th dmrichwa 🇺🇸 952 56 11ms 10 Jul 2023 39th tayloia 🇬🇧 952 56 10ms 10 Jul 2023 39th Argeento 🇵🇱 952 56 12ms 25 Aug 2023 39th weliveinhell 🇭🇹 952 56 11ms 2 Oct 2023 39th coreynash 952 56 11ms 6 Oct 2023 39th dylanarmstrong 952 56 14ms 10 Dec 2023 39th two-bad 🇬🇧 952 56 11ms 23 Feb 2024 39th mehbark 952 56 13ms 27 Jul 2024 39th madeforlosers 952 56 11ms 4 Nov 2024 39th XenThe 🇬🇧 952 56 14ms 6 Jun 2025 39th albanian-laundromat 952 56 10ms 17 days ago 61st nwellnhof 🇩🇪 951 37 4 May 2022 61st primo-ppcg 🇹🇭 951 37 5 May 2022 63rd antimon2 🇯🇵 949 45 10 Sep 2022 64th DelaneyJM 949 47 2,493ms 7 Apr 2025 64th KevinMarquette 🇺🇸 949 47 2,346ms 7 Apr 2025 64th sean-niemann 🇺🇸 949 47 2,406ms 7 Apr 2025 64th corbob 🇨🇦 949 47 2,344ms 8 Apr 2025 64th jborean93 949 47 2,068ms 9 Apr 2025 64th bitsandbeyond 🇳🇱 949 47 2,476ms 8 Jun 2025 64th DialFrost 🇸🇬 949 47 2,376ms 8 Jun 2025 71st Lydxn 🇨🇦 949 89 55ms 6 May 2022 71st JayXon 🇺🇸 949 89 65ms 7 May 2022 71st nwellnhof 🇩🇪 949 89 63ms 5 Jun 2022 71st snyderek 🇺🇸 949 89 62ms 19 Feb 2025 75th GrayJoKing 🇦🇺 947 37 88ms 5 May 2022 1–75 of 3,385 Next Last