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 Smooth 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 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 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 Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 826th janAkali 🇷🇺 843 77 12 Feb 2025 827th bschorno 843 92 12 Oct 2022 827th ChrisTheisen 843 92 14 Dec 2022 827th kellantech 843 92 4 Jul 2023 827th Mezzofloat 843 92 26 Aug 2023 827th Maximizer02 843 92 1 Oct 2023 827th madeforlosers 843 92 21 Nov 2024 827th kmathis22 843 92 20 days ago 834th DialFrost 🇸🇬 842 66 7 Apr 2025 835th SirBogman 🇺🇸 842 89 4 May 2022 836th krcs 🇵🇱 841 53 9 May 2022 836th ryanlanegit 841 53 19 Jun 2022 836th sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 839th eshilo-draper 839 75 6 Sep 2022 839th kmathis22 839 75 19 days ago 841st raszpi 🇭🇺 839 77 1 Sep 2023 842nd ovs-code 🇩🇪 839 161 10 days ago 843rd frankgraziano 838 66 20 Apr 2025 844th sean-niemann 🇺🇸 838 76 8 Oct 2024 845th error256 838 81 13 Sep 2024 846th Codsilla 🇨🇦 837 51 1 Jul 2022 847th Andriamanitra 🇫🇮 836 83 17 Apr 2023 847th Natanaelel 🇸🇪 836 83 8 Jul 2023 849th CLOStrophobic 🇮🇹 836 89 14 Feb 2025 850th CatsAreFluffy 836 101 18 Feb 2023 850th annaproxy 836 101 9 May 2023 850th wojtekmal 836 101 15 Nov 2023 850th HumanoidCPU 836 101 6 May 2024 850th eMGeeneer 836 101 27 Jun 2024 850th bac0id 836 101 29 Jun 2024 850th michaelmoynihan 836 101 21 days ago 857th emplv 🇱🇻 836 124 31 Oct 2022 858th scpchicken 🇵🇼 835 55 4 May 2022 858th SirBogman 🇺🇸 835 55 5 May 2022 858th Shanethegamer 🇺🇸 835 55 19 May 2023 858th DialFrost 🇸🇬 835 55 14 Feb 2025 862nd Yewzir 🇧🇪 835 69 24 Dec 2024 863rd Steffan153 🇫🇮 835 97 18 Jan 2023 864th cduerm 835 118 5 days ago 865th SirBogman 🇺🇸 834 36 5 May 2022 865th HPWiz 🇳🇿 834 36 7 May 2022 865th Natanaelel 🇸🇪 834 36 15 Jun 2022 865th Steffan153 🇫🇮 834 36 18 Jan 2023 865th codereport 🇨🇦 834 36 1 Jun 2024 865th GolfinK 834 36 21 Nov 2024 865th lifthrasiir 🇰🇷 834 36 1 Dec 2024 865th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 873rd ChiefChippy2 834 56 4 May 2022 873rd aksyristos 834 56 29 Jan 2023 873rd anter69 🇭🇺 834 56 12 Feb 2024 873rd 3dm4n 🇫🇮 834 56 11 Mar 2024 873rd lgrandco 834 56 9 Oct 2024 873rd tatzyr 🇯🇵 834 56 10 Dec 2024 879th moustave 834 67 7 Nov 2024 880th inverseLorentz 🇦🇺 834 69 3 Jun 2024 880th CLOStrophobic 🇮🇹 834 69 28 May 2025 882nd ovs-code 🇩🇪 834 85 11 Dec 2023 883rd dokutan 834 88 9 Jun 2024 884th p-vf 🇨🇭 834 93 24 Jun 2022 884th Smetalo 834 93 25 Aug 2022 884th malworthy 834 93 19 Aug 2024 887th DialFrost 🇸🇬 834 162 10 days ago 887th emgordon154 834 162 7 days ago 889th Alex-x90 🇺🇸 833 74 4 Dec 2022 889th undersquire 833 74 24 Jun 2023 889th rdmsr 833 74 24 Jun 2023 889th Bmrl7 833 74 9 Jul 2023 889th Vinterion 833 74 6 Nov 2023 889th namelessiw 833 74 28 Dec 2023 889th Jonatan6 🇩🇰 833 74 15 Mar 2024 889th Mandrzejy 🇵🇱 833 74 12 Apr 2024 889th kaurakeksi 🇫🇮 833 74 29 Dec 2024 898th Shanethegamer 🇺🇸 833 82 15 May 2023 899th nwellnhof 🇩🇪 833 117 16 Nov 2022 900th Natanaelel 🇸🇪 832 39 10 Feb 2025 Prev 826–900 of 3,317 Next