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 523rd JayXon 🇺🇸 885 65 17 Oct 2022 523rd Steffan153 🇫🇮 885 65 12 Nov 2022 523rd tobeannouncd 885 65 25 Apr 2025 523rd sean-niemann 🇺🇸 885 65 10 days ago 530th Lydxn 🇨🇦 885 72 16 Jul 2023 531st sean-niemann 🇺🇸 885 73 12 Jul 2024 532nd nwellnhof 🇩🇪 885 111 4 May 2022 532nd stefangimmillaro 885 111 26 Sep 2023 532nd kkoenig 885 111 4 Jan 2024 535th Shanethegamer 🇺🇸 884 61 31 Oct 2022 535th MeWhenI 🇻🇦 884 61 4 Nov 2022 537th dokutan 884 82 1 Jul 2024 538th DialFrost 🇸🇬 884 95 10 Dec 2024 539th canissimia 🇦🇶 884 110 20 Feb 2023 540th Yewzir 🇧🇪 883 150 21 May 2024 541st Steffan153 🇫🇮 882 52 31 Dec 2022 542nd stefangimmillaro 882 71 2 Oct 2022 542nd Steffan153 🇫🇮 882 71 23 Feb 2023 542nd Shanethegamer 🇺🇸 882 71 16 May 2023 542nd sean-niemann 🇺🇸 882 71 12 Jul 2024 546th Shanethegamer 🇺🇸 882 72 8 May 2025 547th GrayJoKing 🇦🇺 882 77 13 Sep 2024 548th JayXon 🇺🇸 881 74 14 Nov 2024 549th DialFrost 🇸🇬 881 76 17 Mar 2025 550th SiestaGuru 881 88 9 Jan 2023 550th rifatx 881 88 5 Jul 2024 552nd primo-ppcg 🇹🇭 880 52 5 May 2022 552nd dvargas46 🇺🇸 880 52 22 Dec 2022 554th stefangimmillaro 880 53 2 Oct 2022 554th Haksell 🇦🇶 880 53 22 Feb 2023 556th GrayJoKing 🇦🇺 880 70 6 May 2022 556th ovs-code 🇩🇪 880 70 8 Oct 2023 556th catfish000 880 70 8 Oct 2023 556th saito-ta 🇯🇵 880 70 21 Dec 2023 556th sean-niemann 🇺🇸 880 70 10 Jul 2024 561st m-tkach 🇺🇦 880 117 7 May 2022 561st Lydxn 🇨🇦 880 117 7 May 2022 563rd ovs-code 🇩🇪 879 89 24 Jul 2024 563rd jipsong 🇩🇪 879 89 7 Apr 2025 565th nipzu 879 94 17 May 2022 565th Natanaelel 🇸🇪 879 94 17 Jun 2022 565th nkoppel 879 94 19 Oct 2022 565th ovs-code 🇩🇪 879 94 21 Jun 2023 565th mousetail 🇳🇱 879 94 12 Jan 2024 570th Irratix 🇳🇱 879 96 4 May 2022 570th MeWhenI 🇻🇦 879 96 1 Jun 2022 570th janbehrens 🇩🇪 879 96 21 Apr 2023 570th Shanethegamer 🇺🇸 879 96 15 May 2023 570th Yewzir 🇧🇪 879 96 11 Nov 2023 570th MateuszPietrzak 🇵🇱 879 96 18 Nov 2023 570th kkoenig 879 96 21 Dec 2023 570th BlankSpruce 879 96 20 Aug 2024 570th fuzzylojik-golf 🇺🇸 879 96 5 days ago 579th jared-hughes 879 130 15 Dec 2024 580th ravnskjaer 🇩🇰 879 133 11 Sep 2024 581st sisyphus-ppcg 🇦🇺 878 40 31 Jan 2023 581st sean-niemann 🇺🇸 878 40 8 Mar 2025 583rd m-tkach 🇺🇦 878 113 15 Jan 2025 584th ovs-code 🇩🇪 877 151 9 Sep 2023 585th primo-ppcg 🇹🇭 876 85 14 Jan 2025 585th MeWhenI 🇻🇦 876 85 21 Apr 2025 587th GrayJoKing 🇦🇺 875 72 31 May 2022 587th Shanethegamer 🇺🇸 875 72 1 Jun 2022 587th Steffan153 🇫🇮 875 72 10 Dec 2022 590th steffan-polygolf 875 74 14 Feb 2024 591st Shanethegamer 🇺🇸 875 142 27 Mar 2025 591st DialFrost 🇸🇬 875 142 28 Mar 2025 591st emgordon154 875 142 10 Apr 2025 594th Shanethegamer 🇺🇸 874 51 15 May 2023 595th rucin93 🇵🇱 873 57 4 Aug 2024 595th dokutan 873 57 9 Aug 2024 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 3,112 Next