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 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 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 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 Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 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 Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 373rd DialFrost 🇸🇬 899 60 30 Jul 2024 373rd GolfingSuccess 🇬🇷 899 60 16 Oct 2024 373rd sean-niemann 🇺🇸 899 60 7 Mar 2025 379th Lydxn 🇨🇦 899 64 1 Apr 2023 380th bwat2 899 130 5 May 2022 381st GrayJoKing 🇦🇺 898 71 10 Aug 2023 382nd stefangimmillaro 898 92 24 Oct 2023 382nd inverseLorentz 🇦🇺 898 92 27 May 2024 384th shinh 897 52 29 Jun 2022 384th MeWhenI 🇻🇦 897 52 25 Jul 2023 384th pardouin 🇫🇷 897 52 12 Apr 2025 387th Shanethegamer 🇺🇸 897 72 4 May 2022 387th jared-hughes 897 72 4 May 2022 387th Waffle3z 897 72 5 May 2022 387th Blendi-Goose 897 72 16 Mar 2025 387th edsrzf 🇳🇿 897 72 12 Apr 2025 392nd marshallward 🇺🇸 897 83 10 May 2022 393rd m-tkach 🇺🇦 897 90 7 Dec 2023 394th michael-pruglo 🇺🇦 897 94 5 Jul 2022 394th zygoloid 897 94 5 Aug 2024 396th GolfingSuccess 🇬🇷 896 64 14 Dec 2024 396th MeWhenI 🇻🇦 896 64 24 Dec 2024 398th DialFrost 🇸🇬 896 77 27 Feb 2025 399th Kacarott 🇦🇺 896 79 13 Jun 2024 400th Lydxn 🇨🇦 895 70 7 May 2022 401st m-tkach 🇺🇦 895 72 16 Oct 2022 401st GrayJoKing 🇦🇺 895 72 22 Oct 2022 401st emplv 🇱🇻 895 72 27 Oct 2022 401st sean-niemann 🇺🇸 895 72 7 Mar 2025 405th Shanethegamer 🇺🇸 895 81 19 Dec 2023 405th edsrzf 🇳🇿 895 81 6 Jan 2025 407th MeWhenI 🇻🇦 894 63 5 May 2022 408th MeWhenI 🇻🇦 893 71 20 Aug 2024 409th Steffan153 🇫🇮 893 82 1 Apr 2023 409th sean-niemann 🇺🇸 893 82 12 Jul 2024 411th edsrzf 🇳🇿 893 83 14 Jan 2025 411th kg583 🇺🇸 893 83 14 Feb 2025 413th emplv 🇱🇻 893 110 5 May 2022 413th Shanethegamer 🇺🇸 893 110 21 Nov 2023 413th edsrzf 🇳🇿 893 110 28 Nov 2024 416th Lydxn 🇨🇦 892 69 12 Sep 2022 416th GrayJoKing 🇦🇺 892 69 12 Sep 2022 416th btnlq 892 69 24 Sep 2022 419th MichalMarsalek 🇨🇿 892 87 5 May 2022 419th Kloppermand 🇩🇰 892 87 7 Oct 2022 421st SiestaGuru 892 131 9 Jan 2023 421st HumanoidCPU 892 131 7 May 2024 423rd SirBogman 🇺🇸 891 50 5 May 2022 423rd nwellnhof 🇩🇪 891 50 3 Jun 2022 423rd Lydxn 🇨🇦 891 50 15 Aug 2022 423rd bitsandbeyond 🇳🇱 891 50 9 Aug 2024 423rd Steffan153 🇫🇮 891 50 9 Aug 2024 423rd DialFrost 🇸🇬 891 50 7 Apr 2025 429th pabloferz 889 48 6 Mar 2024 430th edsrzf 🇳🇿 889 78 26 Oct 2024 431st JayXon 🇺🇸 889 149 21 May 2024 432nd oeb25 888 93 16 May 2022 432nd snobee 🇨🇦 888 93 8 Dec 2022 432nd logvp 888 93 2 Jan 2024 432nd elgan65536 888 93 5 Mar 2024 432nd smartiel 888 93 12 Aug 2024 432nd trist224 🇫🇷 888 93 12 Aug 2024 432nd nullie 888 93 19 Dec 2024 432nd lolgeny 888 93 22 Feb 2025 440th GolfingSuccess 🇬🇷 888 95 5 May 2022 440th Alex-x90 🇺🇸 888 95 4 Dec 2022 440th Mandrzejy 🇵🇱 888 95 22 Mar 2024 443rd KatieLG 🇬🇧 887 60 4 May 2022 443rd ScottHamper 887 60 5 May 2022 443rd Re-Adventures 🇮🇳 887 60 5 May 2022 443rd 0x24a537r9 887 60 29 Jul 2022 443rd stefangabos 🇷🇴 887 60 19 Aug 2022 443rd eranws 887 60 10 Sep 2022 443rd GeorgeStechman 🇬🇧 887 60 26 Sep 2022 443rd BloodStormKnight 887 60 15 Oct 2022 Prev 376–450 of 3,025 Next