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 225th JayXon 🇺🇸 925 68 91ms 4 Mar 2025 227th Lydxn 🇨🇦 924 70 106ms 17 Oct 2022 227th JayXon 🇺🇸 924 70 110ms 17 Oct 2022 227th GrayJoKing 🇦🇺 924 70 3ms 13 Jul 2024 227th FlyingPenguin223 924 70 4ms 4 Oct 2024 227th jipsong 🇩🇪 924 70 6ms 5 Apr 2025 232nd roavin 924 84 338ms 23 Jun 2022 232nd tkr-sh 🇰🇵 924 84 330ms 20 Aug 2022 232nd Nickmiste 924 84 360ms 9 Nov 2022 232nd postie77 924 84 358ms 19 May 2023 232nd ertz1ertz 924 84 364ms 13 Sep 2024 232nd Grabnukebomb 924 84 374ms 13 Sep 2024 232nd Shanethegamer 🇺🇸 924 84 342ms 9 Apr 2025 232nd HumanoidCPU 924 84 370ms 10 Apr 2025 232nd annaproxy 924 84 340ms 11 Apr 2025 232nd Re-Adventures 🇮🇳 924 84 335ms 15 Apr 2025 232nd janbehrens 🇩🇪 924 84 352ms 17 Apr 2025 243rd sean-niemann 🇺🇸 923 54 137ms 6 Aug 2024 243rd Steffan153 🇫🇮 923 54 125ms 6 Aug 2024 243rd lukegustafson 🇺🇸 923 54 124ms 7 Aug 2024 243rd pardouin 🇫🇷 923 54 129ms 8 Aug 2024 243rd Lydxn 🇨🇦 923 54 132ms 9 Aug 2024 243rd JayXon 🇺🇸 923 54 144ms 9 Aug 2024 249th ovs-code 🇩🇪 922 60 7ms 9 Oct 2023 249th GrayJoKing 🇦🇺 922 60 5ms 11 Oct 2023 249th Lydxn 🇨🇦 922 60 7ms 11 Oct 2023 249th GolfingSuccess 🇬🇷 922 60 5ms 16 Nov 2023 249th Steffan153 🇫🇮 922 60 5ms 28 Jan 2024 249th JayXon 🇺🇸 922 60 5ms 29 Jan 2024 249th rucin93 🇵🇱 922 60 5ms 10 Jul 2024 249th sean-niemann 🇺🇸 922 60 5ms 10 Jul 2024 257th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 257th JayXon 🇺🇸 922 67 53ms 19 Aug 2024 259th JayXon 🇺🇸 922 105 248ms 4 Oct 2025 259th KasperKivimaeki 🇫🇮 922 105 243ms 4 Oct 2025 261st Lydxn 🇨🇦 920 90 124ms 6 May 2022 262nd sisyphus-ppcg 🇦🇺 919 50 2,856ms 31 Jan 2023 262nd saito-ta 🇯🇵 919 50 890ms 12 Dec 2024 264th uiamn 919 58 11ms 6 Sep 2022 264th 5quiwyrm 919 58 12ms 29 Sep 2022 264th alasdair-greenland 919 58 10ms 13 Jan 2023 264th kirjavascript 919 58 11ms 4 Aug 2025 264th Posandu 919 58 11ms 26 Aug 2025 264th mrxz 🇳🇱 919 58 11ms 3 Sep 2025 270th sean-niemann 🇺🇸 919 66 100ms 29 May 2025 271st Herbert00709 🇵🇱 919 92 55ms 17 Nov 2023 271st 4QT0R 919 92 62ms 23 Nov 2023 271st ovs-code 🇩🇪 919 92 56ms 3 Jun 2024 274th primo-ppcg 🇹🇭 917 24 158ms 10 Dec 2022 275th nwellnhof 🇩🇪 916 51 50ms 4 May 2022 275th primo-ppcg 🇹🇭 916 51 43ms 6 May 2022 275th janlelis 916 51 39ms 10 May 2022 275th Natanaelel 🇸🇪 916 51 39ms 2 Jun 2022 279th Irratix 🇳🇱 916 61 49ms 7 May 2022 279th TFeld00 🇩🇰 916 61 31ms 17 May 2022 279th hallvabo 🇳🇴 916 61 20ms 4 Sep 2022 279th DialFrost 🇸🇬 916 61 26ms 19 Dec 2022 279th anter69 🇭🇺 916 61 21ms 19 Dec 2022 279th Alex-x90 🇺🇸 916 61 22ms 27 Dec 2022 279th commandblockguy 🇺🇸 916 61 19ms 22 Aug 2023 279th fgrosshans 🇫🇷 916 61 20ms 22 Jul 2024 279th duckyluuk 🇳🇱 916 61 24ms 15 Aug 2024 279th rucin93 🇵🇱 916 61 19ms 31 May 2025 279th katss2 916 61 31ms 17 Aug 2025 290th btnlq 915 59 8ms 6 Nov 2022 291st JayXon 🇺🇸 915 69 790ms 5 Apr 2023 291st Lydxn 🇨🇦 915 69 848ms 9 Apr 2023 293rd xnor-gate 914 63 194ms 20 Jan 2025 294th MichalMarsalek 🇨🇿 914 71 122ms 5 May 2022 294th Lydxn 🇨🇦 914 71 126ms 7 May 2022 294th GrayJoKing 🇦🇺 914 71 129ms 8 May 2022 294th JayXon 🇺🇸 914 71 137ms 8 May 2022 294th Steffan153 🇫🇮 914 71 120ms 9 Mar 2023 294th Shanethegamer 🇺🇸 914 71 128ms 15 May 2023 294th MeWhenI 🇻🇦 914 71 121ms 8 Aug 2023 First Prev 226–300 of 3,406 Next Last