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 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 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 221st sean-niemann 🇺🇸 926 52 502ms 24 Jan 2025 227th MeWhenI 🇻🇦 925 68 88ms 23 Feb 2023 227th JayXon 🇺🇸 925 68 91ms 4 Mar 2025 229th Lydxn 🇨🇦 924 70 106ms 17 Oct 2022 229th JayXon 🇺🇸 924 70 110ms 17 Oct 2022 229th GrayJoKing 🇦🇺 924 70 3ms 13 Jul 2024 229th FlyingPenguin223 924 70 4ms 4 Oct 2024 229th jipsong 🇩🇪 924 70 6ms 5 Apr 2025 234th roavin 924 84 338ms 23 Jun 2022 234th tkr-sh 🇰🇵 924 84 330ms 20 Aug 2022 234th Nickmiste 924 84 360ms 9 Nov 2022 234th postie77 924 84 358ms 19 May 2023 234th ertz1ertz 924 84 364ms 13 Sep 2024 234th Grabnukebomb 924 84 374ms 13 Sep 2024 234th Shanethegamer 🇺🇸 924 84 342ms 9 Apr 2025 234th HumanoidCPU 924 84 370ms 10 Apr 2025 234th annaproxy 924 84 340ms 11 Apr 2025 234th Re-Adventures 🇮🇳 924 84 335ms 15 Apr 2025 234th janbehrens 🇩🇪 924 84 352ms 17 Apr 2025 245th sean-niemann 🇺🇸 923 54 125ms 6 Aug 2024 245th Steffan153 🇫🇮 923 54 124ms 6 Aug 2024 245th lukegustafson 🇺🇸 923 54 124ms 7 Aug 2024 245th pardouin 🇫🇷 923 54 125ms 8 Aug 2024 245th Lydxn 🇨🇦 923 54 132ms 9 Aug 2024 245th JayXon 🇺🇸 923 54 127ms 9 Aug 2024 251st ovs-code 🇩🇪 922 60 7ms 9 Oct 2023 251st GrayJoKing 🇦🇺 922 60 5ms 11 Oct 2023 251st Lydxn 🇨🇦 922 60 7ms 11 Oct 2023 251st GolfingSuccess 🇬🇷 922 60 5ms 16 Nov 2023 251st Steffan153 🇫🇮 922 60 5ms 28 Jan 2024 251st JayXon 🇺🇸 922 60 5ms 29 Jan 2024 251st rucin93 🇵🇱 922 60 5ms 10 Jul 2024 251st sean-niemann 🇺🇸 922 60 5ms 10 Jul 2024 259th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 259th JayXon 🇺🇸 922 67 53ms 19 Aug 2024 261st JayXon 🇺🇸 922 105 248ms 4 Oct 2025 261st KasperKivimaeki 🇫🇮 922 105 243ms 4 Oct 2025 263rd Lydxn 🇨🇦 920 90 124ms 6 May 2022 264th sisyphus-ppcg 🇦🇺 919 50 2,856ms 31 Jan 2023 264th saito-ta 🇯🇵 919 50 890ms 12 Dec 2024 266th uiamn 919 58 11ms 6 Sep 2022 266th 5quiwyrm 919 58 11ms 29 Sep 2022 266th alasdair-greenland 919 58 10ms 13 Jan 2023 266th kirjavascript 919 58 11ms 4 Aug 2025 266th Posandu 919 58 13ms 26 Aug 2025 266th mrxz 🇳🇱 919 58 10ms 3 Sep 2025 272nd sean-niemann 🇺🇸 919 66 100ms 29 May 2025 273rd Herbert00709 🇵🇱 919 92 55ms 17 Nov 2023 273rd 4QT0R 919 92 62ms 23 Nov 2023 273rd ovs-code 🇩🇪 919 92 56ms 3 Jun 2024 276th primo-ppcg 🇹🇭 917 24 158ms 10 Dec 2022 277th nwellnhof 🇩🇪 916 51 50ms 4 May 2022 277th primo-ppcg 🇹🇭 916 51 43ms 6 May 2022 277th janlelis 916 51 39ms 10 May 2022 277th Natanaelel 🇸🇪 916 51 39ms 2 Jun 2022 281st Irratix 🇳🇱 916 61 49ms 7 May 2022 281st TFeld00 🇩🇰 916 61 31ms 17 May 2022 281st hallvabo 🇳🇴 916 61 20ms 4 Sep 2022 281st DialFrost 🇸🇬 916 61 26ms 19 Dec 2022 281st anter69 🇭🇺 916 61 21ms 19 Dec 2022 281st Alex-x90 🇺🇸 916 61 22ms 27 Dec 2022 281st commandblockguy 🇺🇸 916 61 19ms 22 Aug 2023 281st fgrosshans 🇫🇷 916 61 20ms 22 Jul 2024 281st duckyluuk 🇳🇱 916 61 24ms 15 Aug 2024 281st rucin93 🇵🇱 916 61 19ms 31 May 2025 281st katss2 916 61 31ms 17 Aug 2025 292nd btnlq 915 59 8ms 6 Nov 2022 293rd JayXon 🇺🇸 915 69 790ms 5 Apr 2023 293rd Lydxn 🇨🇦 915 69 848ms 9 Apr 2023 295th xnor-gate 914 63 194ms 20 Jan 2025 296th MichalMarsalek 🇨🇿 914 71 122ms 5 May 2022 296th Lydxn 🇨🇦 914 71 126ms 7 May 2022 296th GrayJoKing 🇦🇺 914 71 129ms 8 May 2022 296th JayXon 🇺🇸 914 71 137ms 8 May 2022 296th Steffan153 🇫🇮 914 71 120ms 9 Mar 2023 First Prev 226–300 of 3,414 Next Last