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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 525th Lydxn 🇨🇦 886 117 7 May 2022 527th canissimia 🇦🇶 886 204 25 Nov 2023 528th Shanethegamer 🇺🇸 885 61 31 Oct 2022 528th MeWhenI 🇻🇦 885 61 4 Nov 2022 530th lynn 885 65 5 May 2022 530th GrayJoKing 🇦🇺 885 65 5 May 2022 530th Sakisan 🇧🇪 885 65 6 May 2022 530th JayXon 🇺🇸 885 65 17 Oct 2022 530th Steffan153 🇫🇮 885 65 12 Nov 2022 530th tobeannouncd 885 65 25 Apr 2025 530th sean-niemann 🇺🇸 885 65 9 Jun 2025 537th JayXon 🇺🇸 885 74 14 Nov 2024 538th Steffan153 🇫🇮 884 52 31 Dec 2022 539th DialFrost 🇸🇬 884 95 10 Dec 2024 540th jared-hughes 883 130 15 Dec 2024 541st DialFrost 🇸🇬 882 76 17 Mar 2025 542nd GrayJoKing 🇦🇺 882 77 13 Sep 2024 543rd primo-ppcg 🇹🇭 882 85 14 Jan 2025 543rd MeWhenI 🇻🇦 882 85 21 Apr 2025 545th albanian-laundromat 882 94 6 days ago 546th stefangimmillaro 881 53 2 Oct 2022 546th Haksell 🇦🇶 881 53 22 Feb 2023 548th GrayJoKing 🇦🇺 881 70 6 May 2022 548th ovs-code 🇩🇪 881 70 8 Oct 2023 548th 09cf 881 70 8 Oct 2023 548th saito-ta 🇯🇵 881 70 21 Dec 2023 548th sean-niemann 🇺🇸 881 70 10 Jul 2024 548th KasperKivimaeki 🇫🇮 881 70 8 Aug 2025 554th SiestaGuru 881 88 9 Jan 2023 554th rifatx 881 88 5 Jul 2024 554th kmathis22 881 88 4 days ago 557th nipzu 881 94 17 May 2022 557th Natanaelel 🇸🇪 881 94 17 Jun 2022 557th nkoppel 881 94 19 Oct 2022 557th ovs-code 🇩🇪 881 94 21 Jun 2023 557th mousetail 🇳🇱 881 94 12 Jan 2024 562nd m-tkach 🇺🇦 881 112 22 Jun 2025 563rd primo-ppcg 🇹🇭 880 52 5 May 2022 563rd dvargas46 🇺🇸 880 52 22 Dec 2022 565th Irratix 🇳🇱 880 96 4 May 2022 565th MeWhenI 🇻🇦 880 96 1 Jun 2022 565th janbehrens 🇩🇪 880 96 21 Apr 2023 565th Shanethegamer 🇺🇸 880 96 15 May 2023 565th Yewzir 🇧🇪 880 96 11 Nov 2023 565th MateuszPietrzak 🇵🇱 880 96 18 Nov 2023 565th kkoenig 880 96 21 Dec 2023 565th BlankSpruce 880 96 20 Aug 2024 565th fuzzylojik-golf 🇺🇸 880 96 14 Jun 2025 574th sisyphus-ppcg 🇦🇺 879 40 31 Jan 2023 574th sean-niemann 🇺🇸 879 40 8 Mar 2025 576th ovs-code 🇩🇪 879 89 24 Jul 2024 576th jipsong 🇩🇪 879 89 7 Apr 2025 578th DialFrost 🇸🇬 878 56 1 Sep 2025 579th ovs-code 🇩🇪 878 73 22 Jul 2023 580th steffan-polygolf 877 74 14 Feb 2024 581st Shanethegamer 🇺🇸 877 81 19 Dec 2023 581st emgordon154 877 81 29 Jul 2025 583rd mousetail 🇳🇱 876 40 29 Aug 2025 584th GrayJoKing 🇦🇺 876 72 31 May 2022 584th Shanethegamer 🇺🇸 876 72 1 Jun 2022 584th Steffan153 🇫🇮 876 72 10 Dec 2022 587th primo-ppcg 🇹🇭 876 193 14 Aug 2025 588th Shanethegamer 🇺🇸 875 142 27 Mar 2025 588th DialFrost 🇸🇬 875 142 28 Mar 2025 588th emgordon154 875 142 10 Apr 2025 591st Shanethegamer 🇺🇸 874 51 15 May 2023 592nd rucin93 🇵🇱 874 57 4 Aug 2024 592nd dokutan 874 57 9 Aug 2024 594th Grrisly 874 74 25 Mar 2024 595th GrayJoKing 🇦🇺 874 84 19 Jun 2022 595th primo-ppcg 🇹🇭 874 84 29 Jun 2022 597th c0d3-4-F00d 🇩🇪 873 61 6 May 2022 597th jackkav 873 61 26 Jun 2022 597th TechNolaByte 873 61 6 Jul 2022 597th Heathcorp 🇦🇺 873 61 17 Jul 2022 Prev 526–600 of 3,336 Next