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 750th AlephSquirrel 859 56 21 Jan 2024 752nd Setvizan 859 62 12 Jan 2023 752nd GreenBeansAgainstVeganism 859 62 13 Jan 2023 752nd arctouch-cristiannevianna 859 62 3 Apr 2023 752nd Corxldyphik 859 62 11 Apr 2023 752nd Blockyheadman 859 62 1 Nov 2023 752nd ollyspooner 859 62 22 Nov 2023 752nd itserasmus 859 62 25 Jan 2024 752nd Jacob385 859 62 13 Mar 2024 752nd junkondo-jp 859 62 30 Jun 2024 752nd ShiraJoseph 🇺🇸 859 62 1 Mar 2025 762nd yzhs 🇩🇪 859 65 16 Jun 2022 762nd rollershutter 859 65 9 Sep 2022 762nd bac0id 859 65 26 Sep 2023 762nd mossiegoat 859 65 8 Jun 2025 762nd RaBa21 🇭🇺 859 65 11 Jul 2025 767th Andriamanitra 🇫🇮 859 67 26 Apr 2023 768th Steffan153 🇫🇮 859 78 4 Feb 2023 769th ulucs 858 35 8 May 2022 769th bstrat 858 35 6 Jun 2024 769th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 772nd JRaspass 🇬🇧 858 41 4 May 2022 772nd SirBogman 🇺🇸 858 41 4 May 2022 772nd Natanaelel 🇸🇪 858 41 4 May 2022 775th 5quiwyrm 857 52 4 Sep 2022 775th MeWhenI 🇻🇦 857 52 28 Jan 2023 775th Feniske 🇫🇷 857 52 7 Nov 2023 775th dcgjb 857 52 29 Jan 2024 775th JPRuskin 🇬🇧 857 52 7 Apr 2025 775th IISResetMe 857 52 7 Apr 2025 775th Ripick 857 52 1 Jun 2025 782nd MeWhenI 🇻🇦 857 81 23 May 2023 783rd KatieLG 🇬🇧 857 115 25 Sep 2022 783rd emgordon154 857 115 17 Jan 2025 785th MeWhenI 🇻🇦 857 145 28 Mar 2025 786th jared-hughes 856 72 6 Jul 2022 786th Steffan153 🇫🇮 856 72 3 Jan 2023 786th MeWhenI 🇻🇦 856 72 7 May 2023 786th ListeriaM 856 72 22 Aug 2023 786th larcherMTT 856 72 5 Oct 2024 786th snyderek 🇺🇸 856 72 19 Feb 2025 786th 5quiwyrm 856 72 29 Jun 2025 786th TeodorDyakov 🇧🇬 856 72 8 Jul 2025 786th xiaoyiming123 856 72 12 Jul 2025 795th typeswitch-dev 🇵🇹 855 75 22 Jul 2023 796th ovs-code 🇩🇪 855 83 1 Jul 2024 797th eshilo-draper 855 137 4 Sep 2022 798th Frowny 854 38 5 May 2022 798th stackofbears 854 38 14 Mar 2025 800th MeWhenI 🇻🇦 854 71 13 Dec 2022 801st 386asm 🇺🇸 854 86 9 Apr 2023 802nd DialFrost 🇸🇬 853 50 24 Oct 2023 803rd henrydukepickle 853 97 8 Jul 2025 804th yeminghan2021 853 99 3 Feb 2025 805th eshilo-draper 852 91 4 Sep 2022 805th ericlangedijk 🇸🇮 852 91 23 May 2023 805th KatieLG 🇬🇧 852 91 30 Apr 2024 805th Mikey-Beep 🇬🇧 852 91 3 Sep 2024 809th o0lit3 🇺🇸 851 54 22 Jun 2023 809th Natanaelel 🇸🇪 851 54 10 Feb 2025 811th Yewzir 🇧🇪 851 65 9 Oct 2023 811th MeWhenI 🇻🇦 851 65 10 Oct 2023 813th frosster 851 76 12 May 2023 813th kyleclaassen 851 76 20 May 2023 813th RockOfStone 851 76 17 Mar 2024 813th NickTheEASDude 🇺🇸 851 76 7 May 2024 813th koipondx86 851 76 8 Nov 2024 818th Shanethegamer 🇺🇸 851 83 4 May 2022 819th mtirado1 850 74 24 Dec 2022 819th Betuaredead 850 74 6 Jan 2023 819th KatieLG 🇬🇧 850 74 15 Jan 2023 819th bwat2 850 74 31 Mar 2023 819th stackotter 850 74 29 May 2023 819th ovs-code 🇩🇪 850 74 17 Apr 2024 819th madeforlosers 850 74 21 Nov 2024 Prev 751–825 of 3,307 Next