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 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 Trinomial Triangle 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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 225th GrayJoKing 🇦🇺 922 60 11 Oct 2023 225th Lydxn 🇨🇦 922 60 11 Oct 2023 225th GolfingSuccess 🇬🇷 922 60 16 Nov 2023 225th Steffan153 🇫🇮 922 60 28 Jan 2024 225th JayXon 🇺🇸 922 60 29 Jan 2024 225th rucin93 🇵🇱 922 60 10 Jul 2024 225th sean-niemann 🇺🇸 922 60 10 Jul 2024 233rd Lydxn 🇨🇦 922 70 17 Oct 2022 233rd JayXon 🇺🇸 922 70 17 Oct 2022 235th Steffan153 🇫🇮 921 67 19 Aug 2024 235th JayXon 🇺🇸 921 67 19 Aug 2024 237th Lydxn 🇨🇦 921 107 6 May 2022 237th JayXon 🇺🇸 921 107 9 May 2022 239th Lydxn 🇨🇦 920 90 6 May 2022 239th kumavale 920 90 21 days ago 241st sisyphus-ppcg 🇦🇺 919 50 31 Jan 2023 241st saito-ta 🇯🇵 919 50 12 Dec 2024 243rd sean-niemann 🇺🇸 919 66 29 May 2025 244th uiamn 918 58 6 Sep 2022 244th 5quiwyrm 918 58 29 Sep 2022 244th alasdair-greenland 918 58 13 Jan 2023 244th kirjavascript 918 58 4 Aug 2025 244th Posandu 918 58 26 Aug 2025 244th mrxz 🇳🇱 918 58 21 days ago 250th Herbert00709 🇵🇱 918 92 17 Nov 2023 250th 4QT0R 918 92 23 Nov 2023 250th ovs-code 🇩🇪 918 92 3 Jun 2024 253rd primo-ppcg 🇹🇭 917 24 10 Dec 2022 254th nwellnhof 🇩🇪 916 51 4 May 2022 254th primo-ppcg 🇹🇭 916 51 6 May 2022 254th janlelis 916 51 10 May 2022 254th Natanaelel 🇸🇪 916 51 2 Jun 2022 258th Irratix 🇳🇱 916 61 7 May 2022 258th TFeld00 🇩🇰 916 61 17 May 2022 258th hallvabo 🇳🇴 916 61 4 Sep 2022 258th DialFrost 🇸🇬 916 61 19 Dec 2022 258th anter69 🇭🇺 916 61 19 Dec 2022 258th Alex-x90 🇺🇸 916 61 27 Dec 2022 258th commandblockguy 🇺🇸 916 61 22 Aug 2023 258th fgrosshans 🇫🇷 916 61 22 Jul 2024 258th duckyluuk 🇳🇱 916 61 15 Aug 2024 258th rucin93 🇵🇱 916 61 31 May 2025 258th katss2 916 61 17 Aug 2025 269th btnlq 915 59 6 Nov 2022 270th xnor-gate 914 63 20 Jan 2025 271st JayXon 🇺🇸 914 69 5 Apr 2023 271st Lydxn 🇨🇦 914 69 9 Apr 2023 273rd MichalMarsalek 🇨🇿 914 71 5 May 2022 273rd Lydxn 🇨🇦 914 71 7 May 2022 273rd GrayJoKing 🇦🇺 914 71 8 May 2022 273rd JayXon 🇺🇸 914 71 8 May 2022 273rd Steffan153 🇫🇮 914 71 9 Mar 2023 273rd Shanethegamer 🇺🇸 914 71 15 May 2023 273rd MeWhenI 🇻🇦 914 71 8 Aug 2023 273rd sean-niemann 🇺🇸 914 71 9 Jan 2025 281st Steffan153 🇫🇮 913 76 15 May 2023 281st primo-ppcg 🇹🇭 913 76 15 May 2023 281st Lydxn 🇨🇦 913 76 22 May 2023 281st GrayJoKing 🇦🇺 913 76 24 Aug 2023 285th arctouch-cristiannevianna 912 85 3 Apr 2023 285th Widgitty 912 85 1 Sep 2023 285th tomtheisen 🇺🇸 912 85 10 Apr 2025 288th sean-niemann 🇺🇸 912 108 25 May 2024 288th GolfingSuccess 🇬🇷 912 108 18 days ago 290th primo-ppcg 🇹🇭 911 61 6 May 2022 290th sisyphus-ppcg 🇦🇺 911 61 14 Jul 2022 292nd Steffan153 🇫🇮 911 71 10 Dec 2022 292nd synt7x 🇺🇸 911 71 7 Jul 2025 294th Bubbler-4 910 33 6 May 2022 294th rak1507 🇬🇧 910 33 8 May 2022 294th ngn 🇧🇬 910 33 11 May 2022 294th zacjl 910 33 3 Jun 2025 294th GrayJoKing 🇦🇺 910 33 4 Jun 2025 299th Lydxn 🇨🇦 910 70 7 May 2022 299th JayXon 🇺🇸 910 70 7 May 2022 Prev 226–300 of 3,317 Next