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 751st Steffan153 🇫🇮 859 78 84ms 4 Feb 2023 752nd ulucs 858 35 9ms 8 May 2022 752nd bstrat 858 35 8ms 6 Jun 2024 752nd wh3n3v3r 🇨🇿 858 35 9ms 18 Nov 2024 755th JRaspass 🇬🇧 858 41 416ms 4 May 2022 755th SirBogman 🇺🇸 858 41 304ms 4 May 2022 755th Natanaelel 🇸🇪 858 41 420ms 4 May 2022 758th MeWhenI 🇻🇦 858 81 8ms 23 May 2023 759th 5quiwyrm 857 52 242ms 4 Sep 2022 759th MeWhenI 🇻🇦 857 52 265ms 28 Jan 2023 759th Feniske 🇫🇷 857 52 251ms 7 Nov 2023 759th dcgjb 857 52 300ms 29 Jan 2024 759th JPRuskin 🇬🇧 857 52 254ms 7 Apr 2025 759th IISResetMe 857 52 268ms 7 Apr 2025 759th Ripick 857 52 265ms 1 Jun 2025 766th jared-hughes 857 72 3ms 6 Jul 2022 766th Steffan153 🇫🇮 857 72 3ms 3 Jan 2023 766th MeWhenI 🇻🇦 857 72 2ms 7 May 2023 766th ListeriaM 857 72 2ms 22 Aug 2023 766th larcherMTT 857 72 3ms 5 Oct 2024 766th snyderek 🇺🇸 857 72 3ms 19 Feb 2025 766th 5quiwyrm 857 72 3ms 29 Jun 2025 766th TeodorDyakov 🇧🇬 857 72 2ms 8 Jul 2025 766th xiaoyiming123 857 72 2ms 12 Jul 2025 775th MeWhenI 🇻🇦 857 145 852ms 28 Mar 2025 776th ovs-code 🇩🇪 856 83 63ms 1 Jul 2024 777th Liibe 856 97 366ms 25 Sep 2025 777th Schmitt-Very-Cool 856 97 487ms 26 Sep 2025 779th Frowny 855 38 43ms 5 May 2022 779th stackofbears 855 38 53ms 14 Mar 2025 781st typeswitch-dev 🇵🇹 855 75 5ms 22 Jul 2023 782nd 386asm 🇺🇸 855 86 45ms 9 Apr 2023 783rd DialFrost 🇸🇬 854 50 263ms 24 Oct 2023 784th MeWhenI 🇻🇦 854 71 96ms 13 Dec 2022 785th yeminghan2021 854 99 56ms 3 Feb 2025 786th frankgraziano 854 198 139ms 22 days ago 787th eshilo-draper 853 91 348ms 4 Sep 2022 787th ericlangedijk 🇸🇮 853 91 387ms 23 May 2023 787th KatieLG 🇬🇧 853 91 356ms 30 Apr 2024 787th Mikey-Beep 🇬🇧 853 91 345ms 3 Sep 2024 791st henrydukepickle 853 97 123ms 8 Jul 2025 792nd o0lit3 🇺🇸 851 54 8ms 22 Jun 2023 792nd Natanaelel 🇸🇪 851 54 8ms 10 Feb 2025 794th Yewzir 🇧🇪 851 65 4ms 9 Oct 2023 794th MeWhenI 🇻🇦 851 65 4ms 10 Oct 2023 796th frosster 851 76 7ms 12 May 2023 796th kyleclaassen 851 76 11ms 20 May 2023 796th NickTheEASDude 🇺🇸 851 76 6ms 7 May 2024 796th koipondx86 851 76 8ms 8 Nov 2024 800th Shanethegamer 🇺🇸 851 83 1,232ms 4 May 2022 801st MeWhenI 🇻🇦 851 92 398ms 10 Oct 2022 801st Betuaredead 851 92 468ms 5 Jan 2023 801st emgordon154 851 92 427ms 27 May 2025 801st Yax42 🇫🇷 851 92 420ms 4 Oct 2025 805th mtirado1 850 74 73ms 24 Dec 2022 805th Betuaredead 850 74 77ms 6 Jan 2023 805th KatieLG 🇬🇧 850 74 79ms 15 Jan 2023 805th bwat2 850 74 80ms 31 Mar 2023 805th stackotter 850 74 77ms 29 May 2023 805th ovs-code 🇩🇪 850 74 79ms 17 Apr 2024 805th madeforlosers 850 74 81ms 21 Nov 2024 812th SirBogman 🇺🇸 849 55 43ms 5 May 2022 812th olivermrose 🇺🇸 849 55 45ms 6 May 2022 812th 4hg 🇺🇸 849 55 46ms 24 Aug 2022 812th DialFrost 🇸🇬 849 55 50ms 1 Jan 2023 812th error256 849 55 43ms 4 May 2024 817th Shanethegamer 🇺🇸 849 58 1,186ms 17 Sep 2025 818th Shanethegamer 🇺🇸 849 99 27ms 27 Apr 2023 819th Grrisly 849 114 295ms 25 Mar 2024 820th JayXon 🇺🇸 848 56 998ms 9 May 2022 821st ovs-code 🇩🇪 848 161 1,871ms 14 Sep 2025 822nd the-zammers 847 68 188ms 2 Oct 2023 823rd MeWhenI 🇻🇦 846 26 201ms 25 Aug 2022 823rd AlephSquirrel 846 26 141ms 6 Jan 2023 823rd ovs-code 🇩🇪 846 26 524ms 5 May 2024 First Prev 751–825 of 3,405 Next Last