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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 718th m-tkach 🇺🇦 870 71 2ms 15 May 2022 718th nwellnhof 🇩🇪 870 71 2ms 5 Jun 2022 718th Irratix 🇳🇱 870 71 2ms 13 Jun 2022 718th michael-pruglo 🇺🇦 870 71 2ms 13 Jul 2022 718th stefangimmillaro 870 71 2ms 2 Jun 2023 718th kkoenig 870 71 2ms 21 Dec 2023 718th JohandeRuiter 🇳🇱 870 71 2ms 14 Sep 2024 718th masinag 🇮🇹 870 71 2ms 6 Oct 2024 729th AlephSquirrel 870 80 12ms 20 Apr 2023 729th ashtraypettingzoo 🇺🇸 870 80 14ms 1 Apr 2024 729th error256 870 80 18ms 18 days ago 732nd CaedenHarper 🇨🇦 869 54 1,364ms 27 Sep 2025 732nd sean-niemann 🇺🇸 869 54 1,464ms 27 Sep 2025 732nd albanian-laundromat 🇺🇸 869 54 1,468ms 14 Nov 2025 732nd xsot 🇸🇬 869 54 1,198ms 15 Nov 2025 736th nwellnhof 🇩🇪 868 53 7ms 4 May 2022 736th GrayJoKing 🇦🇺 868 53 7ms 6 May 2022 738th Shanethegamer 🇺🇸 868 97 110ms 15 Apr 2025 738th GolfingSuccess 🇬🇷 868 97 102ms 28 Nov 2025 738th DialFrost 🇸🇬 868 97 117ms 1 Dec 2025 741st kg583 🇺🇸 868 105 13ms 24 days ago 741st Steffan153 🇫🇮 868 105 13ms 19 days ago 743rd albanian-laundromat 🇺🇸 867 73 532ms 16 Dec 2025 744th Shanethegamer 🇺🇸 867 85 38ms 15 May 2023 744th albanian-laundromat 🇺🇸 867 85 40ms 25 Aug 2025 746th dieggsy 867 97 31ms 8 Oct 2024 747th ovs-code 🇩🇪 867 133 42ms 8 Jul 2024 748th 123mjb 866 96 366ms 20 Nov 2025 748th noescareno 866 96 366ms 21 Nov 2025 750th emgordon154 866 159 1,606ms 24 Dec 2025 750th DialFrost 🇸🇬 866 159 1,763ms 17 Jan 2026 752nd DialFrost 🇸🇬 865 64 5ms 10 Jul 2024 753rd TylerBloom 864 96 123ms 22 Mar 2024 754th shellbertt 🇨🇦 864 98 61ms 9 May 2022 754th iakolzin 864 98 58ms 26 May 2022 754th Betuaredead 864 98 62ms 5 Jan 2023 754th oceko 864 98 60ms 19 Feb 2024 754th cuzdav 864 98 60ms 4 May 2025 754th timhaj 🇸🇮 864 98 58ms 12 Sep 2025 754th Yax42 🇫🇷 864 98 61ms 4 Oct 2025 754th liamjermy6 864 98 66ms 5 days ago 762nd emplv 🇱🇻 864 110 294ms 5 May 2022 762nd Shanethegamer 🇺🇸 864 110 293ms 21 Nov 2023 762nd targrik 864 110 282ms 30 Jun 2025 765th nwellnhof 🇩🇪 863 51 40ms 4 May 2022 765th primo-ppcg 🇹🇭 863 51 42ms 6 May 2022 765th janlelis 863 51 38ms 10 May 2022 765th Natanaelel 🇸🇪 863 51 40ms 2 Jun 2022 765th blaztoma 🇱🇹 863 51 38ms 27 days ago 770th deadp4nda 🇩🇪 863 90 374ms 26 Apr 2024 770th 123mjb 863 90 367ms 23 Jun 2025 770th michelebastione 🇮🇹 863 90 400ms 24 Aug 2025 770th razvandmtr 🇷🇴 863 90 387ms 6 Nov 2025 774th Steffan153 🇫🇮 862 82 1,323ms 23 Feb 2023 775th GrayJoKing 🇦🇺 861 56 437ms 15 Jan 2024 775th AlephSquirrel 861 56 396ms 21 Jan 2024 775th CaedenHarper 🇨🇦 861 56 421ms 26 Jan 2026 778th steffan-polygolf 861 73 92ms 23 Feb 2023 778th MWI-polygolf 861 73 92ms 6 Dec 2023 778th HumanoidCPU 861 73 82ms 7 May 2024 781st Yewzir 🇧🇪 861 160 1,871ms 14 Nov 2025 782nd Setvizan 860 62 11ms 12 Jan 2023 782nd GreenBeansAgainstVeganism 860 62 11ms 13 Jan 2023 782nd arctouch-cristiannevianna 860 62 11ms 3 Apr 2023 782nd Corxldyphik 860 62 12ms 11 Apr 2023 782nd Blockyheadman 860 62 11ms 1 Nov 2023 782nd ollyspooner 860 62 12ms 22 Nov 2023 782nd itserasmus 860 62 12ms 25 Jan 2024 782nd Jacob385 860 62 11ms 13 Mar 2024 782nd junkondo-jp 860 62 11ms 30 Jun 2024 782nd ShiraJoseph 🇺🇸 860 62 13ms 1 Mar 2025 782nd tomh1012 860 62 11ms 3 Dec 2025 793rd yzhs 🇩🇪 860 65 20ms 16 Jun 2022 793rd rollershutter 860 65 20ms 9 Sep 2022 793rd bac0id 860 65 20ms 26 Sep 2023 793rd robin-scragg 860 65 22ms 8 Jun 2025 793rd RaBa21 🇭🇺 860 65 26ms 11 Jul 2025 793rd TransformLikeATensor 860 65 19ms 17 Oct 2025 799th Andriamanitra 🇫🇮 860 67 144ms 26 Apr 2023 800th ulucs 859 35 9ms 8 May 2022 First Prev 721–800 of 3,645 Next Last