Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar 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 Tower of Hanoi 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 Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Calendar 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 Tower of Hanoi 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 Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 239th Nickmiste 924 84 326ms 9 Nov 2022 239th postie77 924 84 323ms 19 May 2023 239th ertz1ertz 924 84 326ms 13 Sep 2024 239th Grabnukebomb 924 84 347ms 13 Sep 2024 239th Shanethegamer 🇺🇸 924 84 358ms 9 Apr 2025 239th HumanoidCPU 924 84 392ms 10 Apr 2025 239th annaproxy 924 84 371ms 11 Apr 2025 239th Re-Adventures 🇮🇳 924 84 376ms 15 Apr 2025 239th janbehrens 🇩🇪 924 84 372ms 17 Apr 2025 250th sean-niemann 🇺🇸 923 54 127ms 6 Aug 2024 250th Steffan153 🇫🇮 923 54 126ms 6 Aug 2024 250th lukegustafson 🇺🇸 923 54 116ms 7 Aug 2024 250th pardouin 🇫🇷 923 54 125ms 8 Aug 2024 250th Lydxn 🇨🇦 923 54 121ms 9 Aug 2024 250th JayXon 🇺🇸 923 54 130ms 9 Aug 2024 256th h3ra993huskp 🇯🇵 923 90 440ms 30 Nov 2025 257th KasperKivimaeki 🇫🇮 923 103 237ms 10 Dec 2025 258th ovs-code 🇩🇪 922 60 4ms 9 Oct 2023 258th GrayJoKing 🇦🇺 922 60 4ms 11 Oct 2023 258th Lydxn 🇨🇦 922 60 5ms 11 Oct 2023 258th GolfingSuccess 🇬🇷 922 60 4ms 16 Nov 2023 258th Steffan153 🇫🇮 922 60 5ms 28 Jan 2024 258th JayXon 🇺🇸 922 60 5ms 29 Jan 2024 258th rucin93 🇵🇱 922 60 5ms 10 Jul 2024 258th sean-niemann 🇺🇸 922 60 5ms 10 Jul 2024 266th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 266th JayXon 🇺🇸 922 67 37ms 19 Aug 2024 268th sisyphus-ppcg 🇦🇺 920 65 106ms 25 days ago 268th ovs-code 🇩🇪 920 65 123ms 25 days ago 270th Lydxn 🇨🇦 920 90 125ms 6 May 2022 271st sisyphus-ppcg 🇦🇺 919 50 2,414ms 31 Jan 2023 271st saito-ta 🇯🇵 919 50 759ms 12 Dec 2024 273rd uiamn 919 58 16ms 6 Sep 2022 273rd 5quiwyrm 919 58 14ms 29 Sep 2022 273rd alasdair-greenland 919 58 12ms 13 Jan 2023 273rd kirjavascript 919 58 11ms 4 Aug 2025 273rd Posandu 919 58 11ms 26 Aug 2025 273rd mrxz 🇳🇱 919 58 19ms 3 Sep 2025 279th Herbert00709 🇵🇱 919 92 62ms 17 Nov 2023 279th 4QT0R 919 92 53ms 23 Nov 2023 279th ovs-code 🇩🇪 919 92 60ms 3 Jun 2024 282nd primo-ppcg 🇹🇭 917 24 166ms 10 Dec 2022 283rd Mukundan314 917 55 1,178ms 17 days ago 284th btnlq 917 59 6ms 6 Nov 2022 284th DialFrost 🇸🇬 917 59 6ms 21 days ago 286th JayXon 🇺🇸 917 69 604ms 5 Apr 2023 286th Lydxn 🇨🇦 917 69 588ms 9 Apr 2023 288th nwellnhof 🇩🇪 916 51 39ms 4 May 2022 288th primo-ppcg 🇹🇭 916 51 45ms 6 May 2022 288th janlelis 916 51 39ms 10 May 2022 288th Natanaelel 🇸🇪 916 51 37ms 2 Jun 2022 292nd Irratix 🇳🇱 916 61 42ms 7 May 2022 292nd TFeld00 🇩🇰 916 61 24ms 17 May 2022 292nd hallvabo 🇳🇴 916 61 20ms 4 Sep 2022 292nd DialFrost 🇸🇬 916 61 23ms 19 Dec 2022 292nd anter69 🇭🇺 916 61 19ms 19 Dec 2022 292nd Alex-x90 🇺🇸 916 61 18ms 27 Dec 2022 292nd commandblockguy 🇺🇸 916 61 19ms 22 Aug 2023 292nd fgrosshans 🇫🇷 916 61 18ms 22 Jul 2024 292nd duckyluuk 🇳🇱 916 61 20ms 15 Aug 2024 292nd rucin93 🇵🇱 916 61 17ms 31 May 2025 292nd katss2 916 61 18ms 17 Aug 2025 292nd snoozingnewt 🇨🇦 916 61 23ms 6 Dec 2025 304th MichalMarsalek 🇨🇿 916 71 143ms 5 May 2022 304th Lydxn 🇨🇦 916 71 174ms 7 May 2022 304th GrayJoKing 🇦🇺 916 71 122ms 8 May 2022 304th JayXon 🇺🇸 916 71 121ms 8 May 2022 304th Steffan153 🇫🇮 916 71 133ms 9 Mar 2023 304th Shanethegamer 🇺🇸 916 71 131ms 15 May 2023 304th MeWhenI 🇻🇦 916 71 128ms 8 Aug 2023 304th sean-niemann 🇺🇸 916 71 127ms 9 Jan 2025 312th Steffan153 🇫🇮 915 76 11ms 15 May 2023 312th primo-ppcg 🇹🇭 915 76 17ms 15 May 2023 312th Lydxn 🇨🇦 915 76 8ms 22 May 2023 312th GrayJoKing 🇦🇺 915 76 13ms 24 Aug 2023 316th edsrzf 🇳🇿 914 54 817ms 13 Sep 2025 316th CaedenHarper 🇨🇦 914 54 826ms 27 Sep 2025 316th sean-niemann 🇺🇸 914 54 833ms 27 Sep 2025 316th albanian-laundromat 914 54 859ms 14 Nov 2025 316th xsot 🇸🇬 914 54 873ms 15 Nov 2025 First Prev 241–320 of 3,505 Next Last