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 223rd FlyingPenguin223 924 70 4ms 4 Oct 2024 223rd jipsong 🇩🇪 924 70 6ms 5 Apr 2025 228th roavin 924 84 338ms 23 Jun 2022 228th tkr-sh 🇫🇷 924 84 330ms 20 Aug 2022 228th Nickmiste 924 84 360ms 9 Nov 2022 228th postie77 924 84 358ms 19 May 2023 228th ertz1ertz 924 84 364ms 13 Sep 2024 228th Grabnukebomb 924 84 374ms 13 Sep 2024 228th Shanethegamer 🇺🇸 924 84 342ms 9 Apr 2025 228th HumanoidCPU 924 84 370ms 10 Apr 2025 228th annaproxy 924 84 340ms 11 Apr 2025 228th Re-Adventures 🇮🇳 924 84 335ms 15 Apr 2025 228th janbehrens 🇩🇪 924 84 352ms 17 Apr 2025 239th sean-niemann 🇺🇸 923 54 132ms 6 Aug 2024 239th Steffan153 🇫🇮 923 54 135ms 6 Aug 2024 239th lukegustafson 🇺🇸 923 54 126ms 7 Aug 2024 239th pardouin 🇫🇷 923 54 155ms 8 Aug 2024 239th Lydxn 🇨🇦 923 54 137ms 9 Aug 2024 239th JayXon 🇺🇸 923 54 160ms 9 Aug 2024 245th ovs-code 🇩🇪 922 60 7ms 9 Oct 2023 245th GrayJoKing 🇦🇺 922 60 5ms 11 Oct 2023 245th Lydxn 🇨🇦 922 60 7ms 11 Oct 2023 245th GolfingSuccess 🇬🇷 922 60 5ms 16 Nov 2023 245th Steffan153 🇫🇮 922 60 5ms 28 Jan 2024 245th JayXon 🇺🇸 922 60 5ms 29 Jan 2024 245th rucin93 🇵🇱 922 60 5ms 10 Jul 2024 245th sean-niemann 🇺🇸 922 60 5ms 10 Jul 2024 253rd Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 253rd JayXon 🇺🇸 922 67 53ms 19 Aug 2024 255th JayXon 🇺🇸 922 105 296ms 18 days ago 255th KasperKivimaeki 🇫🇮 922 105 283ms 18 days ago 257th Lydxn 🇨🇦 920 90 135ms 6 May 2022 258th sisyphus-ppcg 🇦🇺 919 50 2,856ms 31 Jan 2023 258th saito-ta 🇯🇵 919 50 890ms 12 Dec 2024 260th uiamn 919 58 11ms 6 Sep 2022 260th 5quiwyrm 919 58 12ms 29 Sep 2022 260th alasdair-greenland 919 58 10ms 13 Jan 2023 260th kirjavascript 919 58 11ms 4 Aug 2025 260th Posandu 919 58 11ms 26 Aug 2025 260th mrxz 🇳🇱 919 58 11ms 3 Sep 2025 266th sean-niemann 🇺🇸 919 66 110ms 29 May 2025 267th Herbert00709 🇵🇱 918 92 70ms 17 Nov 2023 267th 4QT0R 918 92 67ms 23 Nov 2023 267th ovs-code 🇩🇪 918 92 64ms 3 Jun 2024 270th primo-ppcg 🇹🇭 917 24 158ms 10 Dec 2022 271st nwellnhof 🇩🇪 916 51 50ms 4 May 2022 271st primo-ppcg 🇹🇭 916 51 43ms 6 May 2022 271st janlelis 916 51 39ms 10 May 2022 271st Natanaelel 🇸🇪 916 51 39ms 2 Jun 2022 275th Irratix 🇳🇱 916 61 49ms 7 May 2022 275th TFeld00 🇩🇰 916 61 31ms 17 May 2022 275th hallvabo 🇳🇴 916 61 20ms 4 Sep 2022 275th DialFrost 🇸🇬 916 61 26ms 19 Dec 2022 275th anter69 🇭🇺 916 61 21ms 19 Dec 2022 275th Alex-x90 🇺🇸 916 61 22ms 27 Dec 2022 275th commandblockguy 🇺🇸 916 61 19ms 22 Aug 2023 275th fgrosshans 🇫🇷 916 61 20ms 22 Jul 2024 275th duckyluuk 🇳🇱 916 61 24ms 15 Aug 2024 275th rucin93 🇵🇱 916 61 31 May 2025 275th katss2 916 61 31ms 17 Aug 2025 286th btnlq 915 59 8ms 6 Nov 2022 287th JayXon 🇺🇸 915 69 5 Apr 2023 287th Lydxn 🇨🇦 915 69 9 Apr 2023 289th xnor-gate 914 63 194ms 20 Jan 2025 290th MichalMarsalek 🇨🇿 914 71 153ms 5 May 2022 290th Lydxn 🇨🇦 914 71 142ms 7 May 2022 290th GrayJoKing 🇦🇺 914 71 153ms 8 May 2022 290th JayXon 🇺🇸 914 71 133ms 8 May 2022 290th Steffan153 🇫🇮 914 71 145ms 9 Mar 2023 290th Shanethegamer 🇺🇸 914 71 128ms 15 May 2023 290th MeWhenI 🇻🇦 914 71 153ms 8 Aug 2023 290th sean-niemann 🇺🇸 914 71 151ms 9 Jan 2025 298th Steffan153 🇫🇮 914 76 12ms 15 May 2023 298th primo-ppcg 🇹🇭 914 76 23ms 15 May 2023 298th Lydxn 🇨🇦 914 76 10ms 22 May 2023 First Prev 226–300 of 3,385 Next Last