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 Trinomial Triangle 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 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 Trinomial Triangle 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 Turtle Tutorial # Golfer Points Chars Time 76th GrayJoKing 🇦🇺 947 37 5 May 2022 76th MeWhenI 🇻🇦 947 37 4 Mar 2025 78th GrayJoKing 🇦🇺 947 59 15 Nov 2022 79th Lydxn 🇨🇦 946 82 6 May 2022 79th JayXon 🇺🇸 946 82 9 May 2022 81st Lydxn 🇨🇦 944 51 17 Jan 2024 82nd ovs-code 🇩🇪 944 61 5 Aug 2024 83rd JayXon 🇺🇸 943 88 12 days ago 84th Lydxn 🇨🇦 942 59 6 May 2022 85th JayXon 🇺🇸 941 88 17 Oct 2022 85th acotis 941 88 9 Jun 2025 85th kumavale 941 88 10 hours ago 88th 2bular 939 32 17 Oct 2024 89th primo-ppcg 🇹🇭 938 49 5 May 2022 89th Lydxn 🇨🇦 938 49 8 May 2022 91st JayXon 🇺🇸 938 69 17 Oct 2022 91st Lydxn 🇨🇦 938 69 4 Feb 2023 93rd inventshah 935 57 4 May 2022 93rd itsh01 935 57 17 May 2022 93rd Natanaelel 🇸🇪 935 57 16 Jun 2022 93rd Attero 🇸🇪 935 57 3 Aug 2022 93rd SirFireball3521 935 57 26 Jan 2023 93rd Kacarott 🇦🇺 935 57 24 Mar 2023 93rd nathanadams 🇳🇿 935 57 24 Apr 2023 93rd hacker112 🇸🇪 935 57 20 Jun 2024 93rd thisishowmymindworks 🇳🇴 935 57 28 Jun 2024 93rd Salutations45 935 57 18 Nov 2024 93rd daniel-cardone 935 57 3 Jul 2025 93rd CaedenHarper 🇨🇦 935 57 8 days ago 105th saito-ta 🇯🇵 934 49 13 May 2022 105th Lydxn 🇨🇦 934 49 28 May 2022 107th canissimia 🇦🇶 934 50 5 May 2022 107th ovs-code 🇩🇪 934 50 7 May 2022 107th sisyphus-ppcg 🇦🇺 934 50 20 Feb 2023 107th Steffan153 🇫🇮 934 50 20 Jul 2024 107th sean-niemann 🇺🇸 934 50 9 Jun 2025 107th pardouin 🇫🇷 934 50 22 Aug 2025 113th Irratix 🇳🇱 934 83 4 May 2022 113th nwellnhof 🇩🇪 934 83 4 May 2022 113th ScottHamper 934 83 5 May 2022 113th Romain-1 🇫🇷 934 83 1 Jun 2022 113th Gaddy 🇫🇷 934 83 1 Jun 2022 113th 5quiwyrm 934 83 4 Sep 2022 113th Betuaredead 934 83 5 Jan 2023 113th Yewzir 🇧🇪 934 83 12 Feb 2023 113th btnlq 934 83 9 Mar 2023 113th Adix-null 🇱🇹 934 83 17 May 2023 113th Matgc04 934 83 19 May 2023 113th AdrienHache 🇫🇷 934 83 8 Jun 2023 113th gblikas 934 83 23 Jul 2023 113th KrausRaus 🇺🇸 934 83 31 Jul 2023 113th namelessiw 934 83 9 Apr 2025 113th dokutan 934 83 9 Apr 2025 113th m-tkach 🇺🇦 934 83 10 Apr 2025 113th DialFrost 🇸🇬 934 83 10 Apr 2025 113th Pecanolith 934 83 19 Apr 2025 113th Tyrant7 934 83 19 Apr 2025 113th Yax42 🇫🇷 934 83 19 Apr 2025 113th MeWhenI 🇻🇦 934 83 19 Jun 2025 113th sean-niemann 🇺🇸 934 83 20 Jun 2025 113th stefangimmillaro 934 83 20 Jun 2025 113th tomh1012 934 83 28 Aug 2025 113th fuzzylojik-golf 🇺🇸 934 83 8 Sep 2025 139th DialFrost 🇸🇬 932 89 12 days ago 139th ovs-code 🇩🇪 932 89 12 days ago 139th dokutan 932 89 12 days ago 139th sean-niemann 🇺🇸 932 89 12 days ago 139th Shanethegamer 🇺🇸 932 89 12 days ago 139th nwellnhof 🇩🇪 932 89 12 days ago 139th m-tkach 🇺🇦 932 89 11 days ago 139th namelessiw 932 89 5 days ago 139th Yewzir 🇧🇪 932 89 4 days ago 139th Yax42 🇫🇷 932 89 3 days ago 139th stefangimmillaro 932 89 33 hours ago 150th canissimia 🇦🇶 931 51 6 May 2022 First Prev 76–150 of 3,361 Next Last