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 Continued Fractions 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 Continued Fractions 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 223rd pardouin 🇫🇷 926 52 487ms 11 Jul 2024 223rd Steffan153 🇫🇮 926 52 496ms 17 Aug 2024 223rd sean-niemann 🇺🇸 926 52 502ms 24 Jan 2025 229th MeWhenI 🇻🇦 925 68 88ms 23 Feb 2023 229th JayXon 🇺🇸 925 68 91ms 4 Mar 2025 231st GrayJoKing 🇦🇺 925 70 3ms 13 Jul 2024 231st FlyingPenguin223 925 70 4ms 4 Oct 2024 231st jipsong 🇩🇪 925 70 6ms 5 Apr 2025 234th Lydxn 🇨🇦 924 70 116ms 17 Oct 2022 234th JayXon 🇺🇸 924 70 109ms 17 Oct 2022 236th roavin 924 84 316ms 23 Jun 2022 236th tkr-sh 🇰🇵 924 84 313ms 20 Aug 2022 236th Nickmiste 924 84 321ms 9 Nov 2022 236th postie77 924 84 319ms 19 May 2023 236th ertz1ertz 924 84 317ms 13 Sep 2024 236th Grabnukebomb 924 84 314ms 13 Sep 2024 236th Shanethegamer 🇺🇸 924 84 341ms 9 Apr 2025 236th HumanoidCPU 924 84 344ms 10 Apr 2025 236th annaproxy 924 84 332ms 11 Apr 2025 236th Re-Adventures 🇮🇳 924 84 324ms 15 Apr 2025 236th janbehrens 🇩🇪 924 84 349ms 17 Apr 2025 247th sean-niemann 🇺🇸 923 54 125ms 6 Aug 2024 247th Steffan153 🇫🇮 923 54 124ms 6 Aug 2024 247th lukegustafson 🇺🇸 923 54 123ms 7 Aug 2024 247th pardouin 🇫🇷 923 54 123ms 8 Aug 2024 247th Lydxn 🇨🇦 923 54 128ms 9 Aug 2024 247th JayXon 🇺🇸 923 54 127ms 9 Aug 2024 253rd ovs-code 🇩🇪 922 60 4ms 9 Oct 2023 253rd GrayJoKing 🇦🇺 922 60 5ms 11 Oct 2023 253rd Lydxn 🇨🇦 922 60 4ms 11 Oct 2023 253rd GolfingSuccess 🇬🇷 922 60 4ms 16 Nov 2023 253rd Steffan153 🇫🇮 922 60 4ms 28 Jan 2024 253rd JayXon 🇺🇸 922 60 4ms 29 Jan 2024 253rd rucin93 🇵🇱 922 60 4ms 10 Jul 2024 253rd sean-niemann 🇺🇸 922 60 5ms 10 Jul 2024 261st Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 261st JayXon 🇺🇸 922 67 53ms 19 Aug 2024 263rd JayXon 🇺🇸 922 105 248ms 4 Oct 2025 263rd KasperKivimaeki 🇫🇮 922 105 243ms 4 Oct 2025 265th Lydxn 🇨🇦 920 90 124ms 6 May 2022 266th sisyphus-ppcg 🇦🇺 919 50 2,856ms 31 Jan 2023 266th saito-ta 🇯🇵 919 50 890ms 12 Dec 2024 268th uiamn 919 58 11ms 6 Sep 2022 268th 5quiwyrm 919 58 10ms 29 Sep 2022 268th alasdair-greenland 919 58 12ms 13 Jan 2023 268th kirjavascript 919 58 10ms 4 Aug 2025 268th Posandu 919 58 11ms 26 Aug 2025 268th mrxz 🇳🇱 919 58 13ms 3 Sep 2025 274th sean-niemann 🇺🇸 919 66 100ms 29 May 2025 275th Herbert00709 🇵🇱 919 92 57ms 17 Nov 2023 275th 4QT0R 919 92 55ms 23 Nov 2023 275th ovs-code 🇩🇪 919 92 58ms 3 Jun 2024 278th primo-ppcg 🇹🇭 917 24 158ms 10 Dec 2022 279th JayXon 🇺🇸 917 69 577ms 5 Apr 2023 279th Lydxn 🇨🇦 917 69 563ms 9 Apr 2023 281st nwellnhof 🇩🇪 916 51 50ms 4 May 2022 281st primo-ppcg 🇹🇭 916 51 43ms 6 May 2022 281st janlelis 916 51 39ms 10 May 2022 281st Natanaelel 🇸🇪 916 51 39ms 2 Jun 2022 285th btnlq 916 59 8ms 6 Nov 2022 286th Irratix 🇳🇱 916 61 45ms 7 May 2022 286th TFeld00 🇩🇰 916 61 28ms 17 May 2022 286th hallvabo 🇳🇴 916 61 19ms 4 Sep 2022 286th DialFrost 🇸🇬 916 61 24ms 19 Dec 2022 286th anter69 🇭🇺 916 61 20ms 19 Dec 2022 286th Alex-x90 🇺🇸 916 61 23ms 27 Dec 2022 286th commandblockguy 🇺🇸 916 61 18ms 22 Aug 2023 286th fgrosshans 🇫🇷 916 61 19ms 22 Jul 2024 286th duckyluuk 🇳🇱 916 61 20ms 15 Aug 2024 286th rucin93 🇵🇱 916 61 17ms 31 May 2025 286th katss2 916 61 19ms 17 Aug 2025 297th MichalMarsalek 🇨🇿 915 71 122ms 5 May 2022 297th Lydxn 🇨🇦 915 71 126ms 7 May 2022 297th GrayJoKing 🇦🇺 915 71 128ms 8 May 2022 297th JayXon 🇺🇸 915 71 137ms 8 May 2022 First Prev 226–300 of 3,460 Next Last