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 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 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 747th RaBa21 🇭🇺 860 65 32ms 11 Jul 2025 747th TransformLikeATensor 860 65 21ms 27 days ago 753rd GrayJoKing 🇦🇺 860 67 80ms 8 Feb 2025 754th Andriamanitra 🇫🇮 859 67 159ms 26 Apr 2023 755th MeWhenI 🇻🇦 859 81 8ms 23 May 2023 756th MeWhenI 🇻🇦 859 145 1,470ms 28 Mar 2025 757th ulucs 858 35 9ms 8 May 2022 757th bstrat 858 35 9ms 6 Jun 2024 757th wh3n3v3r 🇨🇿 858 35 8ms 18 Nov 2024 760th JRaspass 🇬🇧 858 41 416ms 4 May 2022 760th SirBogman 🇺🇸 858 41 304ms 4 May 2022 760th Natanaelel 🇸🇪 858 41 420ms 4 May 2022 763rd 5quiwyrm 858 52 242ms 4 Sep 2022 763rd MeWhenI 🇻🇦 858 52 265ms 28 Jan 2023 763rd Feniske 🇫🇷 858 52 251ms 7 Nov 2023 763rd dcgjb 858 52 300ms 29 Jan 2024 763rd JPRuskin 🇬🇧 858 52 254ms 7 Apr 2025 763rd IISResetMe 858 52 268ms 7 Apr 2025 763rd Ripick 858 52 265ms 1 Jun 2025 770th Yewzir 🇧🇪 858 160 1,672ms 2 hours ago 771st jared-hughes 857 72 3ms 6 Jul 2022 771st Steffan153 🇫🇮 857 72 3ms 3 Jan 2023 771st MeWhenI 🇻🇦 857 72 2ms 7 May 2023 771st ListeriaM 857 72 2ms 22 Aug 2023 771st larcherMTT 857 72 3ms 5 Oct 2024 771st snyderek 🇺🇸 857 72 3ms 19 Feb 2025 771st 5quiwyrm 857 72 3ms 29 Jun 2025 771st TeodorDyakov 🇧🇬 857 72 2ms 8 Jul 2025 771st xiaoyiming123 857 72 2ms 12 Jul 2025 780th ovs-code 🇩🇪 856 83 63ms 1 Jul 2024 781st Liibe 856 97 334ms 25 Sep 2025 781st Schmitt-Very-Cool 856 97 336ms 26 Sep 2025 783rd frankgraziano 856 198 102ms 14 Oct 2025 784th Frowny 855 38 43ms 5 May 2022 784th stackofbears 855 38 53ms 14 Mar 2025 786th typeswitch-dev 🇵🇹 855 75 5ms 22 Jul 2023 787th 386asm 🇺🇸 855 86 45ms 9 Apr 2023 788th DialFrost 🇸🇬 854 50 263ms 24 Oct 2023 789th MeWhenI 🇻🇦 854 71 96ms 13 Dec 2022 790th henrydukepickle 854 97 128ms 8 Jul 2025 791st yeminghan2021 854 99 56ms 3 Feb 2025 792nd eshilo-draper 853 91 348ms 4 Sep 2022 792nd ericlangedijk 🇸🇮 853 91 387ms 23 May 2023 792nd KatieLG 🇬🇧 853 91 356ms 30 Apr 2024 792nd Mikey-Beep 🇬🇧 853 91 345ms 3 Sep 2024 796th ovs-code 🇩🇪 853 161 1,597ms 14 Sep 2025 797th frosster 852 76 7ms 12 May 2023 797th kyleclaassen 852 76 11ms 20 May 2023 797th NickTheEASDude 🇺🇸 852 76 6ms 7 May 2024 797th koipondx86 852 76 8ms 8 Nov 2024 801st Shanethegamer 🇺🇸 852 83 1,316ms 4 May 2022 802nd MeWhenI 🇻🇦 852 92 398ms 10 Oct 2022 802nd Betuaredead 852 92 468ms 5 Jan 2023 802nd emgordon154 852 92 427ms 27 May 2025 802nd Yax42 🇫🇷 852 92 420ms 4 Oct 2025 806th o0lit3 🇺🇸 851 54 8ms 22 Jun 2023 806th Natanaelel 🇸🇪 851 54 8ms 10 Feb 2025 808th Yewzir 🇧🇪 851 65 4ms 9 Oct 2023 808th MeWhenI 🇻🇦 851 65 4ms 10 Oct 2023 810th mtirado1 850 74 73ms 24 Dec 2022 810th Betuaredead 850 74 77ms 6 Jan 2023 810th KatieLG 🇬🇧 850 74 79ms 15 Jan 2023 810th bwat2 850 74 80ms 31 Mar 2023 810th stackotter 850 74 77ms 29 May 2023 810th ovs-code 🇩🇪 850 74 79ms 17 Apr 2024 810th madeforlosers 850 74 76ms 21 Nov 2024 817th Shanethegamer 🇺🇸 850 99 27ms 27 Apr 2023 818th SirBogman 🇺🇸 849 55 43ms 5 May 2022 818th olivermrose 🇺🇸 849 55 45ms 6 May 2022 818th 4hg 🇺🇸 849 55 46ms 24 Aug 2022 818th DialFrost 🇸🇬 849 55 50ms 1 Jan 2023 818th error256 849 55 43ms 4 May 2024 823rd Shanethegamer 🇺🇸 849 58 790ms 17 Sep 2025 824th Grrisly 849 114 264ms 25 Mar 2024 825th JayXon 🇺🇸 848 56 998ms 9 May 2022 First Prev 751–825 of 3,438 Next Last