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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 296th Shanethegamer 🇺🇸 915 71 128ms 15 May 2023 296th MeWhenI 🇻🇦 915 71 121ms 8 Aug 2023 296th sean-niemann 🇺🇸 915 71 126ms 9 Jan 2025 304th Steffan153 🇫🇮 915 76 12ms 15 May 2023 304th primo-ppcg 🇹🇭 915 76 23ms 15 May 2023 304th Lydxn 🇨🇦 915 76 8ms 22 May 2023 304th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 308th edsrzf 🇳🇿 914 54 796ms 13 Sep 2025 308th CaedenHarper 🇨🇦 914 54 817ms 27 Sep 2025 308th sean-niemann 🇺🇸 914 54 818ms 27 Sep 2025 308th albanian-laundromat 914 54 859ms 43 hours ago 308th xsot 🇸🇬 914 54 811ms 10 hours ago 313th xnor-gate 914 63 194ms 20 Jan 2025 314th arctouch-cristiannevianna 913 85 366ms 3 Apr 2023 314th Widgitty 913 85 356ms 1 Sep 2023 314th tomtheisen 🇺🇸 913 85 340ms 10 Apr 2025 317th Steffan153 🇫🇮 912 71 6ms 10 Dec 2022 317th synt7x 🇺🇸 912 71 4ms 7 Jul 2025 319th edsrzf 🇳🇿 912 78 21ms 16 Aug 2025 320th primo-ppcg 🇹🇭 911 61 6ms 6 May 2022 320th sisyphus-ppcg 🇦🇺 911 61 9ms 14 Jul 2022 322nd Lydxn 🇨🇦 911 70 96ms 7 May 2022 322nd JayXon 🇺🇸 911 70 96ms 7 May 2022 324th Steffan153 🇫🇮 911 71 107ms 14 Oct 2022 324th Shanethegamer 🇺🇸 911 71 106ms 15 Oct 2022 324th stefangimmillaro 911 71 106ms 16 Oct 2022 324th MeWhenI 🇻🇦 911 71 105ms 16 Oct 2022 328th pardouin 🇫🇷 911 72 3,105ms 21 May 2025 329th annaproxy 911 78 128ms 13 Jan 2023 329th IanUtley 911 78 119ms 12 Nov 2023 329th GrayJoKing 🇦🇺 911 78 84ms 28 Nov 2023 332nd Shanethegamer 🇺🇸 911 86 390ms 15 May 2023 332nd JayXon 🇺🇸 911 86 508ms 15 May 2023 332nd Steffan153 🇫🇮 911 86 389ms 16 May 2023 332nd Lydxn 🇨🇦 911 86 465ms 16 May 2023 332nd GrayJoKing 🇦🇺 911 86 400ms 11 Aug 2023 332nd sean-niemann 🇺🇸 911 86 458ms 11 Jul 2024 338th Bubbler-4 910 33 2,581ms 6 May 2022 338th rak1507 🇬🇧 910 33 113ms 8 May 2022 338th ngn 🇧🇬 910 33 26ms 11 May 2022 338th zacjl 910 33 32ms 3 Jun 2025 338th GrayJoKing 🇦🇺 910 33 14ms 4 Jun 2025 343rd andersk 🇺🇸 910 91 120ms 25 Oct 2022 343rd Super-Pizza 🇨🇦 910 91 127ms 4 Dec 2022 343rd klixel 🇨🇦 910 91 121ms 20 May 2023 343rd lynn 910 91 140ms 6 Jul 2024 343rd edsrzf 🇳🇿 910 91 124ms 29 Nov 2024 343rd DialFrost 🇸🇬 910 91 123ms 7 Apr 2025 349th Lydxn 🇨🇦 909 47 285ms 5 May 2022 350th JayXon 🇺🇸 909 53 443ms 17 Aug 2024 351st tailorspy 909 93 53ms 27 May 2024 351st sean-niemann 🇺🇸 909 93 54ms 9 Jun 2025 351st KasperKivimaeki 🇫🇮 909 93 54ms 20 days ago 354th ovs-code 🇩🇪 908 75 74ms 12 Sep 2024 354th Kacarott 🇦🇺 908 75 78ms 13 Sep 2024 356th Lydxn 🇨🇦 908 81 45ms 1 Apr 2023 357th Shanethegamer 🇺🇸 907 61 4ms 9 Oct 2023 357th edsrzf 🇳🇿 907 61 4ms 4 Jul 2025 359th nai62 907 68 8ms 27 Aug 2022 360th GrayJoKing 🇦🇺 907 74 75ms 1 Nov 2023 361st lynn 907 78 1,358ms 5 May 2022 362nd ovs-code 🇩🇪 905 67 92ms 13 Dec 2022 362nd Steffan153 🇫🇮 905 67 99ms 18 Dec 2022 362nd Lydxn 🇨🇦 905 67 105ms 4 Feb 2023 362nd DialFrost 🇸🇬 905 67 90ms 17 Mar 2025 366th primo-ppcg 🇹🇭 905 93 42ms 7 May 2022 366th AlephSquirrel 905 93 30ms 21 Jan 2023 366th kg583 🇺🇸 905 93 29ms 26 Dec 2024 366th CLOStrophobic 🇮🇹 905 93 31ms 17 Jan 2025 366th edsrzf 🇳🇿 905 93 30ms 3 Jul 2025 371st Lydxn 🇨🇦 905 107 260ms 6 May 2022 371st CaedenHarper 🇨🇦 905 107 256ms 5 Oct 2025 373rd KrausRaus 🇺🇸 903 59 13ms 4 May 2022 373rd voytxt 🇨🇿 903 59 10ms 4 May 2022 373rd KingSkyrock 🇺🇸 903 59 10ms 18 May 2022 First Prev 301–375 of 3,440 Next Last