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 Submitted 75th MeWhenI 🇻🇦 947 37 54ms 4 Mar 2025 77th GrayJoKing 🇦🇺 947 59 19ms 15 Nov 2022 78th Lydxn 🇨🇦 946 82 366ms 6 May 2022 78th JayXon 🇺🇸 946 82 406ms 9 May 2022 80th Lydxn 🇨🇦 944 51 808ms 17 Jan 2024 81st ovs-code 🇩🇪 944 61 265ms 5 Aug 2024 82nd JayXon 🇺🇸 943 88 466ms 27 days ago 83rd Lydxn 🇨🇦 942 59 11ms 6 May 2022 84th JayXon 🇺🇸 941 88 135ms 17 Oct 2022 84th acotis 941 88 132ms 9 Jun 2025 84th kumavale 941 88 135ms 15 days ago 87th 2bular 939 32 42ms 17 Oct 2024 88th primo-ppcg 🇹🇭 938 49 7ms 5 May 2022 88th Lydxn 🇨🇦 938 49 7ms 8 May 2022 90th JayXon 🇺🇸 938 69 5ms 17 Oct 2022 90th Lydxn 🇨🇦 938 69 5ms 4 Feb 2023 92nd inventshah 935 57 12ms 4 May 2022 92nd itsh01 935 57 13ms 17 May 2022 92nd Natanaelel 🇸🇪 935 57 13ms 16 Jun 2022 92nd Attero 🇸🇪 935 57 13ms 3 Aug 2022 92nd SirFireball3521 935 57 12ms 26 Jan 2023 92nd Kacarott 🇦🇺 935 57 11ms 24 Mar 2023 92nd nathanadams 🇳🇿 935 57 11ms 24 Apr 2023 92nd hacker112 🇸🇪 935 57 11ms 20 Jun 2024 92nd thisishowmymindworks 🇳🇴 935 57 10ms 28 Jun 2024 92nd Salutations45 935 57 11ms 18 Nov 2024 92nd daniel-cardone 935 57 11ms 3 Jul 2025 92nd CaedenHarper 🇨🇦 935 57 11ms 24 days ago 92nd BrunoVisnadi 🇧🇷 935 57 13ms 29 hours ago 92nd Laellekoenig 935 57 11ms 6 hours ago 106th Irratix 🇳🇱 935 83 409ms 4 May 2022 106th nwellnhof 🇩🇪 935 83 323ms 4 May 2022 106th ScottHamper 935 83 376ms 5 May 2022 106th Romain-1 🇫🇷 935 83 339ms 1 Jun 2022 106th Gaddy 🇫🇷 935 83 426ms 1 Jun 2022 106th 5quiwyrm 935 83 381ms 4 Sep 2022 106th Betuaredead 935 83 426ms 5 Jan 2023 106th Yewzir 🇧🇪 935 83 351ms 12 Feb 2023 106th btnlq 935 83 377ms 9 Mar 2023 106th Adix-null 🇱🇹 935 83 376ms 17 May 2023 106th Matgc04 935 83 396ms 19 May 2023 106th AdrienHache 🇫🇷 935 83 355ms 8 Jun 2023 106th gblikas 935 83 376ms 23 Jul 2023 106th KrausRaus 🇺🇸 935 83 347ms 31 Jul 2023 106th namelessiw 935 83 329ms 9 Apr 2025 106th dokutan 935 83 420ms 9 Apr 2025 106th m-tkach 🇺🇦 935 83 333ms 10 Apr 2025 106th DialFrost 🇸🇬 935 83 350ms 10 Apr 2025 106th Pecanolith 935 83 353ms 19 Apr 2025 106th Tyrant7 935 83 331ms 19 Apr 2025 106th Yax42 🇫🇷 935 83 374ms 19 Apr 2025 106th MeWhenI 🇻🇦 935 83 352ms 19 Jun 2025 106th sean-niemann 🇺🇸 935 83 358ms 20 Jun 2025 106th stefangimmillaro 935 83 384ms 20 Jun 2025 106th tomh1012 935 83 324ms 28 Aug 2025 106th fuzzylojik-golf 🇺🇸 935 83 346ms 8 Sep 2025 106th CaedenHarper 🇨🇦 935 83 357ms 4 days ago 106th Flix7dev 🇧🇪 935 83 336ms 23 hours ago 134th saito-ta 🇯🇵 934 49 61ms 13 May 2022 134th Lydxn 🇨🇦 934 49 65ms 28 May 2022 136th canissimia 🇦🇶 934 50 41ms 5 May 2022 136th ovs-code 🇩🇪 934 50 279ms 7 May 2022 136th sisyphus-ppcg 🇦🇺 934 50 37ms 20 Feb 2023 136th Steffan153 🇫🇮 934 50 42ms 20 Jul 2024 136th sean-niemann 🇺🇸 934 50 41ms 9 Jun 2025 136th pardouin 🇫🇷 934 50 50ms 22 Aug 2025 142nd DialFrost 🇸🇬 933 89 401ms 24 Sep 2025 142nd ovs-code 🇩🇪 933 89 584ms 27 days ago 142nd dokutan 933 89 439ms 27 days ago 142nd sean-niemann 🇺🇸 933 89 391ms 27 days ago 142nd Shanethegamer 🇺🇸 933 89 436ms 27 days ago 142nd nwellnhof 🇩🇪 933 89 368ms 27 days ago 142nd m-tkach 🇺🇦 933 89 491ms 26 days ago 142nd namelessiw 933 89 400ms 20 days ago 142nd Yewzir 🇧🇪 933 89 501ms 20 days ago First Prev 76–150 of 3,385 Next Last