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 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 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 451st MeWhenI 🇻🇦 898 71 102ms 20 Aug 2024 452nd m-tkach 🇺🇦 898 72 130ms 16 Oct 2022 452nd GrayJoKing 🇦🇺 898 72 115ms 22 Oct 2022 452nd emplv 🇱🇻 898 72 107ms 27 Oct 2022 452nd sean-niemann 🇺🇸 898 72 112ms 7 Mar 2025 456th Steffan153 🇫🇮 897 82 44ms 1 Apr 2023 456th sean-niemann 🇺🇸 897 82 43ms 12 Jul 2024 458th albanian-laundromat 896 55 965ms 22 Sep 2025 459th sean-niemann 🇺🇸 896 108 261ms 25 May 2024 459th GolfingSuccess 🇬🇷 896 108 252ms 6 Sep 2025 461st Lydxn 🇨🇦 895 69 7ms 12 Sep 2022 461st GrayJoKing 🇦🇺 895 69 7ms 12 Sep 2022 461st btnlq 895 69 7ms 24 Sep 2022 464th trinityy-7 894 69 2ms 7 Aug 2025 465th SirBogman 🇺🇸 892 50 414ms 5 May 2022 465th nwellnhof 🇩🇪 892 50 429ms 3 Jun 2022 465th Lydxn 🇨🇦 892 50 415ms 15 Aug 2022 465th Steffan153 🇫🇮 892 50 448ms 9 Aug 2024 469th MichalMarsalek 🇨🇿 892 87 334ms 5 May 2022 469th Kloppermand 🇩🇰 892 87 343ms 7 Oct 2022 469th bwat2 892 87 321ms 6 Apr 2023 472nd GrayJoKing 🇦🇺 892 91 31ms 19 Jan 2023 473rd Lydxn 🇨🇦 891 72 302ms 16 Jul 2023 474th edsrzf 🇳🇿 891 78 12ms 26 Oct 2024 474th kg583 🇺🇸 891 78 11ms 25 Sep 2025 476th p-zubieta 890 48 267ms 6 Mar 2024 477th oeb25 890 93 119ms 16 May 2022 477th snobee 🇨🇦 890 93 122ms 8 Dec 2022 477th logvp 890 93 125ms 2 Jan 2024 477th elgan65536 890 93 122ms 5 Mar 2024 477th smartiel 890 93 124ms 12 Aug 2024 477th trist224 🇫🇷 890 93 127ms 12 Aug 2024 477th nullie 890 93 128ms 19 Dec 2024 477th lolgeny 890 93 124ms 22 Feb 2025 485th GolfingSuccess 🇬🇷 890 95 54ms 5 May 2022 485th Alex-x90 🇺🇸 890 95 56ms 4 Dec 2022 485th Mandrzejy 🇵🇱 890 95 57ms 22 Mar 2024 488th Ripick 889 73 121ms 8 May 2023 489th Steffan153 🇫🇮 889 80 40ms 15 Nov 2022 489th Steffan153 🇫🇮 889 80 26ms 11 Dec 2023 489th error256 889 80 130ms 8 Apr 2025 492nd KatieLG 🇬🇧 888 60 11ms 4 May 2022 492nd ScottHamper 888 60 10ms 5 May 2022 492nd Re-Adventures 🇮🇳 888 60 12ms 5 May 2022 492nd 0x24a537r9 888 60 11ms 29 Jul 2022 492nd stefangabos 🇷🇴 888 60 10ms 19 Aug 2022 492nd eranws 888 60 10ms 10 Sep 2022 492nd GeorgeStechman 🇬🇧 888 60 10ms 26 Sep 2022 492nd BloodStormKnight 888 60 11ms 15 Oct 2022 492nd dzshn 888 60 12ms 3 Dec 2022 492nd biocommando 🇫🇮 888 60 9ms 20 Dec 2022 492nd Betuaredead 888 60 10ms 5 Jan 2023 492nd piano-miles 888 60 11ms 16 Jan 2023 492nd Yewzir 🇧🇪 888 60 10ms 12 Feb 2023 492nd shellbertt 🇨🇦 888 60 10ms 26 Feb 2023 492nd zakariamouhid 888 60 10ms 20 May 2023 492nd raphaelimahorn 888 60 10ms 23 Aug 2023 492nd jbt 888 60 11ms 25 Dec 2023 492nd olleicua 🇺🇸 888 60 11ms 15 Feb 2024 492nd HumanoidCPU 888 60 11ms 3 May 2024 492nd dokutan 888 60 13ms 13 Aug 2024 492nd LostSyntax21 🇬🇧 888 60 10ms 10 Sep 2024 492nd xyangst 888 60 10ms 28 Sep 2024 492nd a6166231 🇨🇳 888 60 10ms 15 May 2025 492nd Protothor 888 60 10ms 8 Jul 2025 492nd SebassNoob 888 60 11ms 5 Aug 2025 492nd Yax42 🇫🇷 888 60 11ms 5 Sep 2025 492nd levinwinter 888 60 11ms 16 days ago 519th MeWhenI 🇻🇦 888 109 255ms 9 Feb 2023 520th m-tkach 🇺🇦 888 117 27ms 7 May 2022 520th Lydxn 🇨🇦 888 117 28ms 7 May 2022 522nd P-Quentin 🇫🇷 887 63 19ms 3 Aug 2022 522nd kaptsanovb 887 63 25ms 20 Apr 2023 522nd fkantelberg 887 63 21ms 14 Jul 2023 522nd snoozingnewt 🇺🇸 887 63 28ms 10 Sep 2023 First Prev 451–525 of 3,406 Next Last