Collatz in JavaScript 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 139th Ultra814 873 63 21 Aug 2025 139th alexsave 873 63 7 days ago 153rd elisherer 🇮🇱 859 64 5 Jun 2022 153rd Ashikpaul 🇮🇳 859 64 29 Jul 2022 153rd LukeBridges 🇬🇧 859 64 26 Oct 2022 153rd florton 859 64 18 Jan 2023 153rd DayDun 🇸🇪 859 64 24 Jan 2023 153rd lyphyser 859 64 3 Jun 2023 153rd Davr1 🇨🇿 859 64 14 Oct 2023 153rd stellartux 859 64 26 Dec 2023 153rd goodwyna21 859 64 12 Nov 2024 153rd xShadowBlade 859 64 26 Dec 2024 153rd richard-oelze 🇩🇪 859 64 4 Aug 2025 164th wansacis 🇩🇪 846 65 13 May 2022 164th krcs 🇵🇱 846 65 24 Nov 2022 164th ejini6969 846 65 1 Apr 2023 164th InspectorBoat 846 65 25 Oct 2023 164th jake6192 846 65 20 May 2025 164th LordSir101 846 65 11 Aug 2025 170th ChiefChippy2 833 66 4 May 2022 170th Radwatch 833 66 22 Jun 2022 170th TheCod-r 🇦🇶 833 66 10 Oct 2022 170th MadScience137 833 66 17 Oct 2022 170th nayakrujul 833 66 12 Mar 2023 170th HenryTy83 833 66 3 May 2023 170th charliegaming 833 66 3 Oct 2023 170th mobibluman 833 66 16 Oct 2023 170th azka1368 833 66 23 Nov 2023 170th thej10n 833 66 13 Jun 2024 170th Florian-Mt 833 66 22 Jul 2024 170th deancureton 833 66 29 Dec 2024 170th Quadruplay 833 66 12 Jul 2025 183rd inverseLorentz 🇦🇺 821 67 25 Jun 2022 183rd maxpelic 🇺🇸 821 67 5 Jul 2022 183rd vroup 🇩🇰 821 67 29 Sep 2022 183rd Bodo171 821 67 1 Dec 2022 183rd Inbarw100 821 67 10 Jun 2023 183rd raszpi 🇭🇺 821 67 1 Sep 2023 183rd dijs 821 67 8 Mar 2024 183rd yb1yb1 821 67 6 Oct 2024 183rd smclaughlin-cf 821 67 25 Feb 2025 192nd Smetalo 809 68 25 Aug 2022 192nd TheRealOhead 🇺🇸 809 68 23 Nov 2022 192nd b10011 🇫🇮 809 68 27 Dec 2022 192nd RasmusBV 809 68 19 Feb 2023 192nd joakim-ronning 809 68 24 May 2023 192nd TRexOnGit 809 68 31 Jan 2024 198th adoxography 797 69 13 Jul 2022 198th eshilo-draper 797 69 5 Oct 2022 198th 2pichar 797 69 11 Nov 2022 198th jorbDehmel 🇺🇸 797 69 17 Jun 2023 202nd Jaro32768 🇸🇰 786 70 8 Feb 2024 202nd Alex-Huggett 🇬🇧 786 70 15 Apr 2024 202nd Moreallure 786 70 5 May 2024 202nd AnnoyedArt1256 786 70 3 Jul 2025 206th destofr 775 71 25 Aug 2022 206th pyuraii 775 71 27 Sep 2022 206th kydogia 775 71 18 Oct 2022 206th jquade7 775 71 27 May 2023 206th SniperSmiley 🇺🇸 775 71 7 Apr 2024 206th dbkirk4211 775 71 3 May 2024 212th coolCucumber-cat 764 72 20 Mar 2023 212th mrmena 🇦🇺 764 72 19 Mar 2024 212th sulphemi 764 72 3 Apr 2025 215th gurglemurgle5 753 73 12 May 2022 215th adamnielson42 🇺🇸 753 73 24 Apr 2023 215th fourth-bit 753 73 23 Jun 2023 215th efgen 753 73 28 Jun 2023 215th AlbatrossBay 753 73 8 Oct 2024 215th ComputerKWasTaken 🇺🇸 753 73 20 Jan 2025 221st JesseNoEyes 🇺🇸 743 74 18 Sep 2024 222nd draxler-h 724 76 14 Jan 2023 222nd DragonaireM 724 76 6 Feb 2023 222nd dteague3989 724 76 12 Aug 2023 225th astdefu 714 77 10 Dec 2022 Prev 151–225 of 259 Next