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 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 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 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 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 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 Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 375th Yewzir 🇧🇪 899 60 12 Feb 2023 375th Steffan153 🇫🇮 899 60 23 Feb 2023 375th DialFrost 🇸🇬 899 60 30 Jul 2024 375th GolfingSuccess 🇬🇷 899 60 16 Oct 2024 375th sean-niemann 🇺🇸 899 60 7 Mar 2025 381st Lydxn 🇨🇦 899 64 1 Apr 2023 382nd bwat2 899 130 5 May 2022 383rd GrayJoKing 🇦🇺 898 71 10 Aug 2023 384th Kacarott 🇦🇺 898 79 13 Jun 2024 385th stefangimmillaro 898 92 24 Oct 2023 385th inverseLorentz 🇦🇺 898 92 27 May 2024 387th michael-pruglo 🇺🇦 898 94 5 Jul 2022 387th zygoloid 898 94 5 Aug 2024 389th shinh 897 52 29 Jun 2022 389th MeWhenI 🇻🇦 897 52 25 Jul 2023 389th pardouin 🇫🇷 897 52 12 Apr 2025 392nd Shanethegamer 🇺🇸 897 72 4 May 2022 392nd jared-hughes 897 72 4 May 2022 392nd Waffle3z 897 72 5 May 2022 392nd Blendi-Goose 897 72 16 Mar 2025 392nd edsrzf 🇳🇿 897 72 12 Apr 2025 397th marshallward 🇺🇸 897 83 10 May 2022 398th m-tkach 🇺🇦 897 90 7 Dec 2023 399th GolfingSuccess 🇬🇷 896 64 14 Dec 2024 399th MeWhenI 🇻🇦 896 64 24 Dec 2024 401st DialFrost 🇸🇬 896 77 27 Feb 2025 402nd Lydxn 🇨🇦 895 70 7 May 2022 403rd m-tkach 🇺🇦 895 72 16 Oct 2022 403rd GrayJoKing 🇦🇺 895 72 22 Oct 2022 403rd emplv 🇱🇻 895 72 27 Oct 2022 403rd sean-niemann 🇺🇸 895 72 7 Mar 2025 407th Shanethegamer 🇺🇸 895 81 19 Dec 2023 407th edsrzf 🇳🇿 895 81 6 Jan 2025 409th MeWhenI 🇻🇦 894 63 5 May 2022 410th MeWhenI 🇻🇦 893 71 20 Aug 2024 411th Steffan153 🇫🇮 893 82 1 Apr 2023 411th sean-niemann 🇺🇸 893 82 12 Jul 2024 413th edsrzf 🇳🇿 893 83 14 Jan 2025 413th kg583 🇺🇸 893 83 14 Feb 2025 415th emplv 🇱🇻 893 110 5 May 2022 415th Shanethegamer 🇺🇸 893 110 21 Nov 2023 415th edsrzf 🇳🇿 893 110 28 Nov 2024 418th Lydxn 🇨🇦 892 69 12 Sep 2022 418th GrayJoKing 🇦🇺 892 69 12 Sep 2022 418th btnlq 892 69 24 Sep 2022 421st MichalMarsalek 🇨🇿 892 87 5 May 2022 421st Kloppermand 🇩🇰 892 87 7 Oct 2022 423rd SiestaGuru 892 131 9 Jan 2023 423rd HumanoidCPU 892 131 7 May 2024 425th SirBogman 🇺🇸 891 50 5 May 2022 425th nwellnhof 🇩🇪 891 50 3 Jun 2022 425th Lydxn 🇨🇦 891 50 15 Aug 2022 425th bitsandbeyond 🇳🇱 891 50 9 Aug 2024 425th Steffan153 🇫🇮 891 50 9 Aug 2024 425th DialFrost 🇸🇬 891 50 7 Apr 2025 431st pabloferz 889 48 6 Mar 2024 432nd edsrzf 🇳🇿 889 78 26 Oct 2024 433rd oeb25 889 93 16 May 2022 433rd snobee 🇨🇦 889 93 8 Dec 2022 433rd logvp 889 93 2 Jan 2024 433rd elgan65536 889 93 5 Mar 2024 433rd smartiel 889 93 12 Aug 2024 433rd trist224 🇫🇷 889 93 12 Aug 2024 433rd nullie 889 93 19 Dec 2024 433rd lolgeny 889 93 22 Feb 2025 441st JayXon 🇺🇸 889 149 21 May 2024 442nd GolfingSuccess 🇬🇷 888 95 5 May 2022 442nd Alex-x90 🇺🇸 888 95 4 Dec 2022 442nd Mandrzejy 🇵🇱 888 95 22 Mar 2024 445th KatieLG 🇬🇧 887 60 4 May 2022 445th ScottHamper 887 60 5 May 2022 445th Re-Adventures 🇮🇳 887 60 5 May 2022 445th 0x24a537r9 887 60 29 Jul 2022 445th stefangabos 🇷🇴 887 60 19 Aug 2022 445th eranws 887 60 10 Sep 2022 Prev 376–450 of 3,052 Next