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 824th Natanaelel 🇸🇪 844 73 15 Jun 2022 824th 5quiwyrm 844 73 19 Oct 2022 824th Herbert00709 🇵🇱 844 73 22 Dec 2023 824th LorenzoDeGaspari 844 73 27 May 2024 830th jared-hughes 844 100 20 Jul 2022 830th ZakkkkAttackkkk 🇵🇭 844 100 10 Aug 2022 830th Walter225 844 100 25 Jul 2023 833rd Natanaelel 🇸🇪 843 57 17 Jan 2024 833rd Kacarott 🇦🇺 843 57 10 Sep 2024 835th retrohun 843 64 6 Nov 2022 835th Re-Adventures 🇮🇳 843 64 7 Nov 2022 835th stellartux 843 64 26 Dec 2023 835th bac0id 843 64 29 Jun 2024 835th snoozingnewt 🇺🇸 843 64 1 Sep 2024 840th DialFrost 🇸🇬 843 86 15 Dec 2024 841st Shanethegamer 🇺🇸 843 98 26 Oct 2022 841st emgordon154 843 98 18 Feb 2025 843rd bschorno 842 92 12 Oct 2022 843rd ChrisTheisen 842 92 14 Dec 2022 843rd kellantech 842 92 4 Jul 2023 843rd Mezzofloat 842 92 26 Aug 2023 843rd Maximizer02 842 92 1 Oct 2023 843rd michelebastione 🇮🇹 842 92 22 Dec 2023 843rd madeforlosers 842 92 21 Nov 2024 843rd 123mjb 842 92 17 days ago 851st krcs 🇵🇱 841 53 9 May 2022 851st ryanlanegit 841 53 19 Jun 2022 851st sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 854th DialFrost 🇸🇬 841 66 7 Apr 2025 855th Shanethegamer 🇺🇸 841 82 15 May 2023 856th lynn 841 96 11 Jul 2023 857th Smetalo 841 139 25 Aug 2022 857th ToxicP1e 841 139 2 Mar 2023 859th janAkali 🇷🇺 840 77 12 Feb 2025 860th raszpi 🇭🇺 838 77 1 Sep 2023 861st error256 838 81 13 Sep 2024 862nd Codsilla 🇨🇦 837 51 1 Jul 2022 863rd frankgraziano 836 66 20 Apr 2025 864th SirBogman 🇺🇸 836 89 4 May 2022 865th CatsAreFluffy 836 101 18 Feb 2023 865th annaproxy 836 101 9 May 2023 865th wojtekmal 836 101 15 Nov 2023 865th HumanoidCPU 836 101 6 May 2024 865th eMGeeneer 836 101 27 Jun 2024 865th bac0id 836 101 29 Jun 2024 871st eshilo-draper 835 75 6 Sep 2022 872nd sean-niemann 🇺🇸 835 76 8 Oct 2024 873rd Andriamanitra 🇫🇮 835 83 17 Apr 2023 873rd Natanaelel 🇸🇪 835 83 8 Jul 2023 875th SirBogman 🇺🇸 834 36 5 May 2022 875th HPWiz 🇳🇿 834 36 7 May 2022 875th Natanaelel 🇸🇪 834 36 15 Jun 2022 875th Steffan153 🇫🇮 834 36 18 Jan 2023 875th codereport 🇨🇦 834 36 1 Jun 2024 875th GolfinK 834 36 21 Nov 2024 875th lifthrasiir 🇰🇷 834 36 1 Dec 2024 875th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 883rd scpchicken 🇵🇼 834 55 4 May 2022 883rd SirBogman 🇺🇸 834 55 5 May 2022 883rd Shanethegamer 🇺🇸 834 55 19 May 2023 883rd DialFrost 🇸🇬 834 55 14 Feb 2025 887th inverseLorentz 🇦🇺 834 69 3 Jun 2024 887th CLOStrophobic 🇮🇹 834 69 22 days ago 889th primo-ppcg 🇹🇭 834 216 23 Apr 2025 890th ChiefChippy2 833 56 4 May 2022 890th aksyristos 833 56 29 Jan 2023 890th anter69 🇭🇺 833 56 12 Feb 2024 890th 3dm4n 🇫🇮 833 56 11 Mar 2024 890th lgrandco 833 56 9 Oct 2024 890th tatzyr 🇯🇵 833 56 10 Dec 2024 896th moustave 833 67 7 Nov 2024 897th Alex-x90 🇺🇸 833 74 4 Dec 2022 897th undersquire 833 74 24 Jun 2023 897th rdmsr 833 74 24 Jun 2023 897th Bmrl7 833 74 9 Jul 2023 Prev 826–900 of 3,112 Next