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 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 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 Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 825th malworthy 835 93 19 Aug 2024 825th 123mjb 835 93 17 Oct 2024 828th CatsAreFluffy 835 101 18 Feb 2023 828th annaproxy 835 101 9 May 2023 828th wojtekmal 835 101 15 Nov 2023 828th HumanoidCPU 835 101 6 May 2024 828th eMGeeneer 835 101 27 Jun 2024 828th bac0id 835 101 29 Jun 2024 834th SirBogman 🇺🇸 834 36 5 May 2022 834th HPWiz 🇳🇿 834 36 7 May 2022 834th Natanaelel 🇸🇪 834 36 15 Jun 2022 834th Steffan153 🇫🇮 834 36 18 Jan 2023 834th codereport 🇨🇦 834 36 1 Jun 2024 834th GolfinK 834 36 21 Nov 2024 834th lifthrasiir 🇰🇷 834 36 1 Dec 2024 834th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 842nd scpchicken 🇵🇼 834 55 4 May 2022 842nd SirBogman 🇺🇸 834 55 5 May 2022 842nd Shanethegamer 🇺🇸 834 55 19 May 2023 842nd DialFrost 🇸🇬 834 55 14 Feb 2025 846th inverseLorentz 🇦🇺 834 69 3 Jun 2024 846th CLOStrophobic 🇮🇹 834 69 5 days ago 848th sean-niemann 🇺🇸 834 76 8 Oct 2024 849th primo-ppcg 🇹🇭 834 216 23 Apr 2025 850th ChiefChippy2 833 56 4 May 2022 850th aksyristos 833 56 29 Jan 2023 850th anter69 🇭🇺 833 56 12 Feb 2024 850th 3dm4n 🇫🇮 833 56 11 Mar 2024 850th lgrandco 833 56 9 Oct 2024 850th AbrahamJLR 833 56 28 Nov 2024 850th tatzyr 🇯🇵 833 56 10 Dec 2024 857th moustave 833 67 7 Nov 2024 858th Alex-x90 🇺🇸 833 74 4 Dec 2022 858th undersquire 833 74 24 Jun 2023 858th rdmsr 833 74 24 Jun 2023 858th Bmrl7 833 74 9 Jul 2023 858th Vinterion 833 74 6 Nov 2023 858th namelessiw 833 74 28 Dec 2023 858th Jonatan6 🇩🇰 833 74 15 Mar 2024 858th Mandrzejy 🇵🇱 833 74 12 Apr 2024 858th kaurakeksi 🇫🇮 833 74 29 Dec 2024 867th CLOStrophobic 🇮🇹 833 89 14 Feb 2025 868th Steffan153 🇫🇮 833 97 18 Jan 2023 869th RyanMHsiao 833 159 24 Sep 2024 870th Steffan153 🇫🇮 832 55 21 Dec 2022 871st Shanethegamer 🇺🇸 832 57 15 Dec 2022 871st anter69 🇭🇺 832 57 23 Feb 2023 871st stefangimmillaro 832 57 6 May 2023 874th elisherer 🇮🇱 832 64 5 Jun 2022 874th Ashikpaul 🇮🇳 832 64 29 Jul 2022 874th LukeBridges 🇬🇧 832 64 26 Oct 2022 874th florton 832 64 18 Jan 2023 874th DayDun 🇸🇪 832 64 24 Jan 2023 874th lyphyser 832 64 3 Jun 2023 874th Davr1 🇨🇿 832 64 14 Oct 2023 874th stellartux 832 64 26 Dec 2023 874th goodwyna21 832 64 12 Nov 2024 874th xShadowBlade 832 64 26 Dec 2024 884th dokutan 832 88 9 Jun 2024 885th MeWhenI 🇻🇦 832 101 5 May 2022 886th Yewzir 🇧🇪 831 69 24 Dec 2024 887th nwellnhof 🇩🇪 831 117 16 Nov 2022 888th ovs-code 🇩🇪 830 60 3 Aug 2024 888th GrayJoKing 🇦🇺 830 60 24 Oct 2024 888th Shanethegamer 🇺🇸 830 60 19 Dec 2024 891st alphafalfa 830 65 23 Aug 2024 892nd emplv 🇱🇻 830 124 31 Oct 2022 893rd Natanaelel 🇸🇪 829 39 10 Feb 2025 894th sean-niemann 🇺🇸 829 67 5 May 2022 894th pschmid0 🇺🇸 829 67 5 Aug 2022 894th arobson13 🇨🇦 829 67 11 Apr 2023 894th janbehrens 🇩🇪 829 67 17 May 2023 898th yashima 829 141 19 Oct 2024 899th rollershutter 828 78 8 Jul 2022 899th destofr 828 78 25 Aug 2022 Prev 826–900 of 3,055 Next