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 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 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 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 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 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 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 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 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 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 900th annaproxy 836 101 9 May 2023 900th wojtekmal 836 101 15 Nov 2023 900th HumanoidCPU 836 101 6 May 2024 900th eMGeeneer 836 101 27 Jun 2024 900th bac0id 836 101 29 Jun 2024 900th michaelmoynihan 836 101 4 hours ago 907th RyanMHsiao 836 159 24 Sep 2024 908th scpchicken 🇵🇼 835 55 4 May 2022 908th SirBogman 🇺🇸 835 55 5 May 2022 908th Shanethegamer 🇺🇸 835 55 19 May 2023 908th DialFrost 🇸🇬 835 55 14 Feb 2025 912th Yewzir 🇧🇪 835 69 24 Dec 2024 913th Andriamanitra 🇫🇮 835 83 17 Apr 2023 913th Natanaelel 🇸🇪 835 83 8 Jul 2023 915th CLOStrophobic 🇮🇹 835 89 14 Feb 2025 916th Steffan153 🇫🇮 835 97 18 Jan 2023 917th SirBogman 🇺🇸 834 36 5 May 2022 917th HPWiz 🇳🇿 834 36 7 May 2022 917th Natanaelel 🇸🇪 834 36 15 Jun 2022 917th Steffan153 🇫🇮 834 36 18 Jan 2023 917th codereport 🇨🇦 834 36 1 Jun 2024 917th GolfinK 834 36 21 Nov 2024 917th lifthrasiir 🇰🇷 834 36 1 Dec 2024 917th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 925th ChiefChippy2 834 56 4 May 2022 925th aksyristos 834 56 29 Jan 2023 925th anter69 🇭🇺 834 56 12 Feb 2024 925th 3dm4n 🇫🇮 834 56 11 Mar 2024 925th lgrandco 834 56 9 Oct 2024 925th tatzyr 🇯🇵 834 56 10 Dec 2024 931st moustave 834 67 7 Nov 2024 932nd inverseLorentz 🇦🇺 834 69 3 Jun 2024 932nd CLOStrophobic 🇮🇹 834 69 28 May 2025 934th ovs-code 🇩🇪 834 85 11 Dec 2023 935th p-vf 🇨🇭 834 93 24 Jun 2022 935th Smetalo 834 93 25 Aug 2022 935th malworthy 834 93 19 Aug 2024 938th Alex-x90 🇺🇸 833 74 4 Dec 2022 938th undersquire 833 74 24 Jun 2023 938th rdmsr 833 74 24 Jun 2023 938th Bmrl7 833 74 9 Jul 2023 938th Vinterion 833 74 6 Nov 2023 938th namelessiw 833 74 28 Dec 2023 938th Jonatan6 🇩🇰 833 74 15 Mar 2024 938th Mandrzejy 🇵🇱 833 74 12 Apr 2024 938th kaurakeksi 🇫🇮 833 74 29 Dec 2024 947th Shanethegamer 🇺🇸 833 82 15 May 2023 948th dokutan 833 88 9 Jun 2024 949th nwellnhof 🇩🇪 833 117 16 Nov 2022 950th Steffan153 🇫🇮 832 55 21 Dec 2022 951st Shanethegamer 🇺🇸 832 57 15 Dec 2022 951st anter69 🇭🇺 832 57 23 Feb 2023 951st stefangimmillaro 832 57 6 May 2023 954th elisherer 🇮🇱 832 64 5 Jun 2022 954th Ashikpaul 🇮🇳 832 64 29 Jul 2022 954th LukeBridges 🇬🇧 832 64 26 Oct 2022 954th florton 832 64 18 Jan 2023 954th DayDun 🇸🇪 832 64 24 Jan 2023 954th lyphyser 832 64 3 Jun 2023 954th Davr1 🇨🇿 832 64 14 Oct 2023 954th stellartux 832 64 26 Dec 2023 954th goodwyna21 832 64 12 Nov 2024 954th xShadowBlade 832 64 26 Dec 2024 954th richard-oelze 🇩🇪 832 64 4 Aug 2025 965th MeWhenI 🇻🇦 832 101 5 May 2022 966th emplv 🇱🇻 832 124 31 Oct 2022 967th Natanaelel 🇸🇪 830 39 10 Feb 2025 968th ovs-code 🇩🇪 830 60 3 Aug 2024 968th GrayJoKing 🇦🇺 830 60 24 Oct 2024 968th Shanethegamer 🇺🇸 830 60 19 Dec 2024 971st alphafalfa 830 65 23 Aug 2024 972nd yashima 830 141 19 Oct 2024 973rd sean-niemann 🇺🇸 829 67 5 May 2022 973rd pschmid0 🇺🇸 829 67 5 Aug 2022 973rd arobson13 🇨🇦 829 67 11 Apr 2023 Prev 901–975 of 3,277 Next