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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 750th rollershutter 859 65 9 Sep 2022 750th bac0id 859 65 26 Sep 2023 750th mossiegoat 859 65 8 Jun 2025 750th RaBa21 🇭🇺 859 65 11 Jul 2025 755th Steffan153 🇫🇮 859 78 4 Feb 2023 756th ulucs 858 35 8 May 2022 756th bstrat 858 35 6 Jun 2024 756th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 759th Andriamanitra 🇫🇮 858 67 26 Apr 2023 760th JRaspass 🇬🇧 857 41 4 May 2022 760th SirBogman 🇺🇸 857 41 4 May 2022 760th Natanaelel 🇸🇪 857 41 4 May 2022 763rd 5quiwyrm 857 52 4 Sep 2022 763rd MeWhenI 🇻🇦 857 52 28 Jan 2023 763rd Feniske 🇫🇷 857 52 7 Nov 2023 763rd dcgjb 857 52 29 Jan 2024 763rd JPRuskin 🇬🇧 857 52 7 Apr 2025 763rd IISResetMe 857 52 7 Apr 2025 763rd Ripick 857 52 1 Jun 2025 770th MeWhenI 🇻🇦 857 145 28 Mar 2025 771st jared-hughes 856 72 6 Jul 2022 771st Steffan153 🇫🇮 856 72 3 Jan 2023 771st MeWhenI 🇻🇦 856 72 7 May 2023 771st ListeriaM 856 72 22 Aug 2023 771st larcherMTT 856 72 5 Oct 2024 771st snyderek 🇺🇸 856 72 19 Feb 2025 771st 5quiwyrm 856 72 29 Jun 2025 771st TeodorDyakov 🇧🇬 856 72 8 Jul 2025 771st xiaoyiming123 856 72 12 Jul 2025 780th MeWhenI 🇻🇦 856 81 23 May 2023 781st ovs-code 🇩🇪 855 83 1 Jul 2024 782nd KatieLG 🇬🇧 855 115 25 Sep 2022 782nd emgordon154 855 115 17 Jan 2025 784th mousetail 🇳🇱 854 41 5 days ago 785th eshilo-draper 854 137 4 Sep 2022 786th DialFrost 🇸🇬 853 50 24 Oct 2023 787th MeWhenI 🇻🇦 853 71 13 Dec 2022 788th 386asm 🇺🇸 853 86 9 Apr 2023 789th henrydukepickle 853 97 8 Jul 2025 790th yeminghan2021 853 99 3 Feb 2025 791st Frowny 852 38 5 May 2022 791st stackofbears 852 38 14 Mar 2025 793rd typeswitch-dev 🇵🇹 852 75 22 Jul 2023 794th eshilo-draper 852 91 4 Sep 2022 794th ericlangedijk 🇸🇮 852 91 23 May 2023 794th KatieLG 🇬🇧 852 91 30 Apr 2024 794th Mikey-Beep 🇬🇧 852 91 3 Sep 2024 794th michelebastione 🇮🇹 852 91 2 days ago 799th frosster 851 76 12 May 2023 799th kyleclaassen 851 76 20 May 2023 799th RockOfStone 851 76 17 Mar 2024 799th NickTheEASDude 🇺🇸 851 76 7 May 2024 799th koipondx86 851 76 8 Nov 2024 804th Shanethegamer 🇺🇸 851 83 4 May 2022 805th o0lit3 🇺🇸 850 54 22 Jun 2023 805th Natanaelel 🇸🇪 850 54 10 Feb 2025 807th Yewzir 🇧🇪 850 65 9 Oct 2023 807th MeWhenI 🇻🇦 850 65 10 Oct 2023 809th MeWhenI 🇻🇦 850 92 10 Oct 2022 809th Betuaredead 850 92 5 Jan 2023 809th emgordon154 850 92 27 May 2025 812th mtirado1 849 74 24 Dec 2022 812th Betuaredead 849 74 6 Jan 2023 812th KatieLG 🇬🇧 849 74 15 Jan 2023 812th bwat2 849 74 31 Mar 2023 812th stackotter 849 74 29 May 2023 812th ovs-code 🇩🇪 849 74 17 Apr 2024 812th madeforlosers 849 74 21 Nov 2024 819th Shanethegamer 🇺🇸 849 99 27 Apr 2023 820th SirBogman 🇺🇸 848 55 5 May 2022 820th xiBread 🇺🇸 848 55 6 May 2022 820th 4hg 🇺🇸 848 55 24 Aug 2022 820th DialFrost 🇸🇬 848 55 1 Jan 2023 820th error256 848 55 4 May 2024 825th Re-Adventures 🇮🇳 848 116 16 Jul 2023 Prev 751–825 of 3,247 Next