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Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Taxicab 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 Erlang 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 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 Erlang 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 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 Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 599th janbehrens 🇩🇪 881 96 54ms 21 Apr 2023 599th Shanethegamer 🇺🇸 881 96 50ms 15 May 2023 599th Yewzir 🇧🇪 881 96 55ms 11 Nov 2023 599th MateuszPietrzak 🇵🇱 881 96 54ms 18 Nov 2023 599th kkoenig 881 96 51ms 21 Dec 2023 599th BlankSpruce 881 96 54ms 20 Aug 2024 599th fuzzylojik-golf 🇺🇸 881 96 55ms 14 Jun 2025 608th emplv 🇱🇻 881 110 261ms 5 May 2022 608th Shanethegamer 🇺🇸 881 110 263ms 21 Nov 2023 608th edsrzf 🇳🇿 881 110 247ms 28 Nov 2024 608th targrik 881 110 248ms 30 Jun 2025 612th m-tkach 🇺🇦 881 112 71ms 22 Jun 2025 613th sisyphus-ppcg 🇦🇺 880 40 369ms 31 Jan 2023 613th sean-niemann 🇺🇸 880 40 365ms 8 Mar 2025 615th GrayJoKing 🇦🇺 879 72 438ms 31 May 2022 615th Shanethegamer 🇺🇸 879 72 470ms 1 Jun 2022 615th Steffan153 🇫🇮 879 72 439ms 10 Dec 2022 618th Shanethegamer 🇺🇸 879 81 17ms 19 Dec 2023 618th emgordon154 879 81 21ms 29 Jul 2025 620th ovs-code 🇩🇪 878 73 300ms 22 Jul 2023 621st steffan-polygolf 878 74 126ms 14 Feb 2024 622nd primo-ppcg 🇹🇭 878 193 103ms 14 Aug 2025 623rd Shanethegamer 🇺🇸 877 142 439ms 27 Mar 2025 623rd DialFrost 🇸🇬 877 142 395ms 28 Mar 2025 623rd emgordon154 877 142 454ms 10 Apr 2025 626th mousetail 🇳🇱 876 40 73ms 29 Aug 2025 627th Shanethegamer 🇺🇸 875 51 420ms 15 May 2023 628th Grrisly 875 74 4ms 25 Mar 2024 629th GrayJoKing 🇦🇺 875 84 53ms 19 Jun 2022 629th primo-ppcg 🇹🇭 875 84 48ms 29 Jun 2022 631st JayXon 🇺🇸 875 157 1,590ms 14 Sep 2025 632nd rucin93 🇵🇱 874 57 139ms 4 Aug 2024 632nd dokutan 874 57 129ms 9 Aug 2024 634th c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 634th jackkav 874 61 11ms 26 Jun 2022 634th TechNolaByte 874 61 10ms 6 Jul 2022 634th Heathcorp 🇦🇺 874 61 9ms 17 Jul 2022 634th C0de5mith 🇺🇸 874 61 10ms 3 Aug 2022 634th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 634th moikaturns 🇬🇧 874 61 11ms 25 Sep 2022 634th FlorianCassayre 🇫🇷 874 61 10ms 27 Sep 2022 634th Mazn3k 874 61 9ms 1 Feb 2023 634th tvcv901 874 61 10ms 22 Mar 2023 634th unfinishedprogram 874 61 9ms 19 Jul 2023 634th snoozingnewt 🇺🇸 874 61 9ms 23 Sep 2023 634th funnyboy-roks 874 61 10ms 9 May 2024 634th bac0id 874 61 10ms 29 Jun 2024 634th madex 🇩🇪 874 61 11ms 9 Jul 2024 634th FortuiteMan 🇫🇷 874 61 9ms 10 Oct 2024 634th RobertHoeh 874 61 12ms 5 Apr 2025 634th LvLError 874 61 12ms 29 May 2025 634th Lv0Sys 🇵🇱 874 61 9ms 30 May 2025 634th miles-evan 874 61 10ms 5 Aug 2025 634th alexsave 874 61 10ms 13 Oct 2025 655th NerdyMcNerd42 873 64 19ms 26 Oct 2022 655th tpasfieldERAU 873 64 23ms 14 Nov 2022 655th CheeseCake628 🇳🇴 873 64 23ms 6 Jan 2023 655th adamnielson42 🇺🇸 873 64 23ms 25 Apr 2023 655th nathsou 🇫🇷 873 64 19ms 2 Sep 2023 655th zwxzwxzwx21 873 64 23ms 30 Jan 2024 655th steffan-polygolf 873 64 26ms 8 Mar 2024 655th Jacob385 873 64 57ms 4 Apr 2024 655th gallium-gonzollium 873 64 25ms 26 Aug 2024 664th Shanethegamer 🇺🇸 873 66 189ms 4 May 2022 664th scpchicken 🇵🇼 873 66 328ms 5 May 2022 664th sisyphus-ppcg 🇦🇺 873 66 170ms 6 May 2022 664th Natanaelel 🇸🇪 873 66 159ms 15 Jun 2022 664th Z-snails 873 66 339ms 27 Feb 2023 664th Jeremy-Stafford 873 66 333ms 27 Feb 2023 664th alomiF 873 66 367ms 1 Sep 2023 664th btnlq 873 66 144ms 17 Oct 2023 672nd johnnythedoggie 873 72 87ms 13 May 2022 672nd kaascevich 873 72 81ms 8 Jul 2025 674th DialFrost 🇸🇬 873 73 100ms 3 Jun 2025 675th nwellnhof 🇩🇪 873 111 260ms 4 May 2022 First Prev 601–675 of 3,471 Next Last