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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 751st MeWhenI 🇻🇦 858 81 8ms 23 May 2023 752nd 5quiwyrm 857 52 242ms 4 Sep 2022 752nd MeWhenI 🇻🇦 857 52 265ms 28 Jan 2023 752nd Feniske 🇫🇷 857 52 251ms 7 Nov 2023 752nd dcgjb 857 52 300ms 29 Jan 2024 752nd JPRuskin 🇬🇧 857 52 254ms 7 Apr 2025 752nd IISResetMe 857 52 268ms 7 Apr 2025 752nd Ripick 857 52 265ms 1 Jun 2025 759th jared-hughes 857 72 3ms 6 Jul 2022 759th Steffan153 🇫🇮 857 72 3ms 3 Jan 2023 759th MeWhenI 🇻🇦 857 72 2ms 7 May 2023 759th ListeriaM 857 72 2ms 22 Aug 2023 759th larcherMTT 857 72 3ms 5 Oct 2024 759th snyderek 🇺🇸 857 72 3ms 19 Feb 2025 759th 5quiwyrm 857 72 3ms 29 Jun 2025 759th TeodorDyakov 🇧🇬 857 72 2ms 8 Jul 2025 759th xiaoyiming123 857 72 2ms 12 Jul 2025 768th MeWhenI 🇻🇦 857 145 28 Mar 2025 769th ovs-code 🇩🇪 856 83 63ms 1 Jul 2024 770th Liibe 856 97 27 days ago 770th Schmitt-Very-Cool 856 97 25 days ago 772nd typeswitch-dev 🇵🇹 855 75 5ms 22 Jul 2023 773rd 386asm 🇺🇸 855 86 9 Apr 2023 774th Frowny 854 38 5 May 2022 774th stackofbears 854 38 14 Mar 2025 776th DialFrost 🇸🇬 854 50 24 Oct 2023 777th MeWhenI 🇻🇦 854 71 110ms 13 Dec 2022 778th frankgraziano 854 198 7 days ago 779th eshilo-draper 853 91 348ms 4 Sep 2022 779th ericlangedijk 🇸🇮 853 91 387ms 23 May 2023 779th KatieLG 🇬🇧 853 91 356ms 30 Apr 2024 779th Mikey-Beep 🇬🇧 853 91 345ms 3 Sep 2024 783rd henrydukepickle 853 97 171ms 8 Jul 2025 784th yeminghan2021 853 99 61ms 3 Feb 2025 785th o0lit3 🇺🇸 851 54 8ms 22 Jun 2023 785th Natanaelel 🇸🇪 851 54 8ms 10 Feb 2025 787th Yewzir 🇧🇪 851 65 4ms 9 Oct 2023 787th MeWhenI 🇻🇦 851 65 4ms 10 Oct 2023 789th frosster 851 76 7ms 12 May 2023 789th kyleclaassen 851 76 11ms 20 May 2023 789th NickTheEASDude 🇺🇸 851 76 6ms 7 May 2024 789th koipondx86 851 76 8ms 8 Nov 2024 793rd Shanethegamer 🇺🇸 851 83 1,232ms 4 May 2022 794th MeWhenI 🇻🇦 851 92 398ms 10 Oct 2022 794th Betuaredead 851 92 468ms 5 Jan 2023 794th emgordon154 851 92 427ms 27 May 2025 794th Yax42 🇫🇷 851 92 420ms 18 days ago 798th mtirado1 850 74 95ms 24 Dec 2022 798th Betuaredead 850 74 86ms 6 Jan 2023 798th KatieLG 🇬🇧 850 74 95ms 15 Jan 2023 798th bwat2 850 74 99ms 31 Mar 2023 798th stackotter 850 74 92ms 29 May 2023 798th ovs-code 🇩🇪 850 74 112ms 17 Apr 2024 798th madeforlosers 850 74 89ms 21 Nov 2024 805th SirBogman 🇺🇸 849 55 43ms 5 May 2022 805th olivermrose 🇺🇸 849 55 45ms 6 May 2022 805th 4hg 🇺🇸 849 55 46ms 24 Aug 2022 805th DialFrost 🇸🇬 849 55 50ms 1 Jan 2023 805th error256 849 55 43ms 4 May 2024 810th Shanethegamer 🇺🇸 849 58 17 Sep 2025 811th Shanethegamer 🇺🇸 849 99 27ms 27 Apr 2023 812th Grrisly 849 114 304ms 25 Mar 2024 813th JayXon 🇺🇸 848 56 9 May 2022 814th the-zammers 847 68 188ms 2 Oct 2023 815th MeWhenI 🇻🇦 846 26 201ms 25 Aug 2022 815th AlephSquirrel 846 26 141ms 6 Jan 2023 815th ovs-code 🇩🇪 846 26 524ms 5 May 2024 815th saito-ta 🇯🇵 846 26 139ms 12 Dec 2024 819th randolchance 846 63 11ms 8 Jan 2023 819th CatsAreFluffy 846 63 11ms 18 Feb 2023 819th amiralitaheri 846 63 11ms 23 Feb 2023 819th RuyiLi 846 63 11ms 1 Apr 2023 819th TaserTheFox 🇺🇸 846 63 11ms 25 May 2023 819th pfysches-boop 846 63 14ms 6 Aug 2023 819th mhgockel 846 63 11ms 19 Aug 2023 First Prev 751–825 of 3,385 Next Last