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 222nd Steffan153 🇫🇮 926 52 496ms 17 Aug 2024 222nd sean-niemann 🇺🇸 926 52 502ms 24 Jan 2025 228th MeWhenI 🇻🇦 925 68 88ms 23 Feb 2023 228th JayXon 🇺🇸 925 68 91ms 4 Mar 2025 230th GrayJoKing 🇦🇺 925 70 3ms 13 Jul 2024 230th FlyingPenguin223 925 70 4ms 4 Oct 2024 230th jipsong 🇩🇪 925 70 6ms 5 Apr 2025 233rd Lydxn 🇨🇦 924 70 105ms 17 Oct 2022 233rd JayXon 🇺🇸 924 70 107ms 17 Oct 2022 235th roavin 924 84 338ms 23 Jun 2022 235th tkr-sh 🇰🇵 924 84 330ms 20 Aug 2022 235th Nickmiste 924 84 360ms 9 Nov 2022 235th postie77 924 84 358ms 19 May 2023 235th ertz1ertz 924 84 364ms 13 Sep 2024 235th Grabnukebomb 924 84 374ms 13 Sep 2024 235th Shanethegamer 🇺🇸 924 84 342ms 9 Apr 2025 235th HumanoidCPU 924 84 370ms 10 Apr 2025 235th annaproxy 924 84 340ms 11 Apr 2025 235th Re-Adventures 🇮🇳 924 84 335ms 15 Apr 2025 235th janbehrens 🇩🇪 924 84 352ms 17 Apr 2025 246th sean-niemann 🇺🇸 923 54 125ms 6 Aug 2024 246th Steffan153 🇫🇮 923 54 124ms 6 Aug 2024 246th lukegustafson 🇺🇸 923 54 124ms 7 Aug 2024 246th pardouin 🇫🇷 923 54 125ms 8 Aug 2024 246th Lydxn 🇨🇦 923 54 132ms 9 Aug 2024 246th JayXon 🇺🇸 923 54 127ms 9 Aug 2024 252nd ovs-code 🇩🇪 922 60 5ms 9 Oct 2023 252nd GrayJoKing 🇦🇺 922 60 5ms 11 Oct 2023 252nd Lydxn 🇨🇦 922 60 5ms 11 Oct 2023 252nd GolfingSuccess 🇬🇷 922 60 4ms 16 Nov 2023 252nd Steffan153 🇫🇮 922 60 5ms 28 Jan 2024 252nd JayXon 🇺🇸 922 60 5ms 29 Jan 2024 252nd rucin93 🇵🇱 922 60 5ms 10 Jul 2024 252nd sean-niemann 🇺🇸 922 60 5ms 10 Jul 2024 260th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 260th JayXon 🇺🇸 922 67 53ms 19 Aug 2024 262nd JayXon 🇺🇸 922 105 248ms 4 Oct 2025 262nd KasperKivimaeki 🇫🇮 922 105 243ms 4 Oct 2025 264th Lydxn 🇨🇦 920 90 126ms 6 May 2022 265th sisyphus-ppcg 🇦🇺 919 50 2,856ms 31 Jan 2023 265th saito-ta 🇯🇵 919 50 890ms 12 Dec 2024 267th uiamn 919 58 11ms 6 Sep 2022 267th 5quiwyrm 919 58 11ms 29 Sep 2022 267th alasdair-greenland 919 58 10ms 13 Jan 2023 267th kirjavascript 919 58 11ms 4 Aug 2025 267th Posandu 919 58 13ms 26 Aug 2025 267th mrxz 🇳🇱 919 58 10ms 3 Sep 2025 273rd sean-niemann 🇺🇸 919 66 100ms 29 May 2025 274th Herbert00709 🇵🇱 919 92 55ms 17 Nov 2023 274th 4QT0R 919 92 62ms 23 Nov 2023 274th ovs-code 🇩🇪 919 92 56ms 3 Jun 2024 277th primo-ppcg 🇹🇭 917 24 158ms 10 Dec 2022 278th nwellnhof 🇩🇪 916 51 50ms 4 May 2022 278th primo-ppcg 🇹🇭 916 51 43ms 6 May 2022 278th janlelis 916 51 39ms 10 May 2022 278th Natanaelel 🇸🇪 916 51 39ms 2 Jun 2022 282nd btnlq 916 59 8ms 6 Nov 2022 283rd Irratix 🇳🇱 916 61 49ms 7 May 2022 283rd TFeld00 🇩🇰 916 61 31ms 17 May 2022 283rd hallvabo 🇳🇴 916 61 20ms 4 Sep 2022 283rd DialFrost 🇸🇬 916 61 26ms 19 Dec 2022 283rd anter69 🇭🇺 916 61 21ms 19 Dec 2022 283rd Alex-x90 🇺🇸 916 61 22ms 27 Dec 2022 283rd commandblockguy 🇺🇸 916 61 19ms 22 Aug 2023 283rd fgrosshans 🇫🇷 916 61 20ms 22 Jul 2024 283rd duckyluuk 🇳🇱 916 61 24ms 15 Aug 2024 283rd rucin93 🇵🇱 916 61 19ms 31 May 2025 283rd katss2 916 61 31ms 17 Aug 2025 294th JayXon 🇺🇸 916 69 853ms 5 Apr 2023 294th Lydxn 🇨🇦 916 69 850ms 9 Apr 2023 296th MichalMarsalek 🇨🇿 915 71 122ms 5 May 2022 296th Lydxn 🇨🇦 915 71 126ms 7 May 2022 296th GrayJoKing 🇦🇺 915 71 129ms 8 May 2022 296th JayXon 🇺🇸 915 71 137ms 8 May 2022 296th Steffan153 🇫🇮 915 71 120ms 9 Mar 2023 First Prev 226–300 of 3,436 Next Last