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 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 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 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 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 675th stefangimmillaro 872 86 49ms 14 Jan 2025 677th c0d3-4-F00d 🇩🇪 872 89 311ms 5 May 2022 677th fkantelberg 872 89 319ms 15 Jul 2023 677th bac0id 872 89 320ms 26 Sep 2023 677th TRexOnGit 872 89 320ms 16 Feb 2024 681st nwellnhof 🇩🇪 872 111 260ms 4 May 2022 681st stefangimmillaro 872 111 259ms 26 Sep 2023 681st kkoenig 872 111 256ms 4 Jan 2024 684th janbehrens 🇩🇪 871 90 442ms 21 Apr 2023 684th Yewzir 🇧🇪 871 90 463ms 22 Apr 2023 684th DialFrost 🇸🇬 871 90 440ms 6 Nov 2023 684th Ripick 871 90 439ms 27 Nov 2024 688th inventshah 871 97 54ms 6 May 2022 688th roupiq 🇵🇱 871 97 58ms 22 Nov 2023 690th AlephSquirrel 870 80 11ms 20 Apr 2023 690th ashtraypettingzoo 🇺🇸 870 80 14ms 1 Apr 2024 692nd GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 692nd emplv 🇱🇻 869 71 3ms 5 May 2022 692nd JayXon 🇺🇸 869 71 2ms 7 May 2022 692nd m-tkach 🇺🇦 869 71 2ms 15 May 2022 692nd nwellnhof 🇩🇪 869 71 2ms 5 Jun 2022 692nd Irratix 🇳🇱 869 71 3ms 13 Jun 2022 692nd michael-pruglo 🇺🇦 869 71 3ms 13 Jul 2022 692nd stefangimmillaro 869 71 2ms 2 Jun 2023 692nd kkoenig 869 71 3ms 21 Dec 2023 692nd JohandeRuiter 🇳🇱 869 71 3ms 14 Sep 2024 692nd masinag 🇮🇹 869 71 2ms 6 Oct 2024 703rd dokutan 868 82 24ms 1 Jul 2024 704th nwellnhof 🇩🇪 867 53 7ms 4 May 2022 704th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 706th dieggsy 867 97 41ms 8 Oct 2024 707th GolfingSuccess 🇬🇷 866 57 787ms 29 Aug 2025 708th Shanethegamer 🇺🇸 866 70 93ms 12 Dec 2022 708th Alessandro-Balconi 🇮🇹 866 70 88ms 26 Dec 2022 708th snoozingnewt 🇺🇸 866 70 177ms 3 hours ago 711th Andriamanitra 🇫🇮 865 54 42ms 21 Jul 2022 711th jared-hughes 865 54 39ms 12 Sep 2022 711th OhmNomNom 865 54 47ms 7 Oct 2022 711th olleicua 🇺🇸 865 54 41ms 21 Jan 2024 711th LostSyntax21 🇬🇧 865 54 41ms 12 Mar 2025 711th AbrahamJLR 🇻🇪 865 54 40ms 4 Jun 2025 711th vishal-mohanty 865 54 42ms 25 Aug 2025 718th MeWhenI 🇻🇦 865 85 44ms 27 Jun 2022 718th Shanethegamer 🇺🇸 865 85 42ms 15 May 2023 718th albanian-laundromat 865 85 45ms 25 Aug 2025 721st 123mjb 865 96 346ms 2 days ago 721st noescareno 865 96 344ms 21 hours ago 723rd ovs-code 🇩🇪 865 133 42ms 8 Jul 2024 724th DialFrost 🇸🇬 864 64 5ms 10 Jul 2024 725th mtirado1 863 75 8ms 13 Aug 2022 726th TylerBloom 863 96 127ms 22 Mar 2024 727th shellbertt 🇨🇦 863 98 55ms 9 May 2022 727th iakolzin 863 98 52ms 26 May 2022 727th Betuaredead 863 98 53ms 5 Jan 2023 727th oceko 863 98 55ms 19 Feb 2024 727th dokutan 863 98 55ms 17 Mar 2024 727th cuzdav 863 98 53ms 4 May 2025 727th timhaj 🇸🇮 863 98 56ms 12 Sep 2025 727th Yax42 🇫🇷 863 98 53ms 4 Oct 2025 735th Steffan153 🇫🇮 862 82 1,270ms 23 Feb 2023 736th deadp4nda 🇩🇪 862 90 315ms 26 Apr 2024 736th 123mjb 862 90 321ms 23 Jun 2025 736th michelebastione 🇮🇹 862 90 365ms 24 Aug 2025 736th razvandmtr 🇷🇴 862 90 493ms 16 days ago 740th steffan-polygolf 861 73 79ms 23 Feb 2023 740th MWI-polygolf 861 73 73ms 6 Dec 2023 740th HumanoidCPU 861 73 80ms 7 May 2024 743rd Steffan153 🇫🇮 861 78 82ms 4 Feb 2023 744th GrayJoKing 🇦🇺 860 56 416ms 15 Jan 2024 744th AlephSquirrel 860 56 704ms 21 Jan 2024 746th Setvizan 860 62 10ms 12 Jan 2023 746th GreenBeansAgainstVeganism 860 62 12ms 13 Jan 2023 746th arctouch-cristiannevianna 860 62 10ms 3 Apr 2023 746th Corxldyphik 860 62 10ms 11 Apr 2023 746th Blockyheadman 860 62 11ms 1 Nov 2023 First Prev 676–750 of 3,457 Next Last