ISBN 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 800th bricknellj 683 101 9ms 22 Jun 2024 802nd IlkkaTakala 681 162 65ms 1 Dec 2023 803rd error256 680 66 34ms 8 May 2025 804th MeWhenI 🇻🇦 680 81 258ms 28 Jan 2023 805th DialFrost 🇸🇬 680 90 138ms 3 Nov 2024 806th a6166231 🇨🇳 680 104 9ms 29 May 2025 807th prestosilver 🇺🇸 679 134 376ms 20 Jan 2026 808th DialFrost 🇸🇬 677 84 5ms 14 Aug 2024 809th bizy-coder 677 91 475ms 1 Apr 2024 809th MeWhenI 🇻🇦 677 91 480ms 24 May 2024 809th AlephSquirrel 677 91 469ms 3 Jul 2024 809th CaedenHarper 🇨🇦 677 91 437ms 30 Nov 2025 813th bumchen 677 163 57ms 6 Apr 2023 814th MeWhenI 🇻🇦 677 346 12ms 28 Aug 2023 815th gnuvince 676 45 2ms 29 Jun 2025 816th b10011 🇫🇮 676 102 10ms 14 Jan 2023 816th bzijlema 🇳🇱 676 102 10ms 15 Oct 2024 816th moustave 676 102 10ms 25 Jun 2025 816th blaztoma 🇱🇹 676 102 10ms 9 Oct 2025 816th FoxInTheClouds 676 102 10ms 14 days ago 816th edsrzf 🇳🇿 676 102 11ms 2 days ago 822nd HumanoidCPU 676 136 1ms 4 Mar 2025 823rd Shanethegamer 🇺🇸 675 99 84ms 12 Dec 2022 824th fabianrieder 674 114 440ms 6 Apr 2023 825th jacobly0 🇺🇸 674 193 41ms 18 Sep 2025 826th MeWhenI 🇻🇦 674 199 25ms 2 Oct 2024 827th alexsave 673 105 9ms 8 Nov 2024 827th acollett89 673 105 10ms 1 Aug 2025 827th LordSir101 673 105 8ms 16 Aug 2025 830th violeta-desantis 671 137 2ms 27 Sep 2023 831st inventshah 670 92 478ms 21 Jan 2024 832nd janbehrens 🇩🇪 670 103 9ms 23 Jun 2023 832nd orthoplex 🇨🇽 670 103 10ms 25 Nov 2023 832nd abc7-12 670 103 10ms 26 Jun 2024 832nd madex 🇩🇪 670 103 10ms 7 Aug 2025 832nd Lv0Sys 🇵🇱 670 103 11ms 6 Dec 2025 832nd FortuiteMan 🇫🇷 670 103 10ms 18 Dec 2025 832nd firegene 🇮🇪 670 103 10ms 5 days ago 839th bac0id 670 159 424ms 26 Sep 2023 840th stefangimmillaro 669 67 36ms 26 Dec 2024 841st janbehrens 🇩🇪 669 115 393ms 23 Jun 2023 842nd msbranicky 669 165 62ms 20 Aug 2023 843rd SirBogman 🇺🇸 667 39 42ms 4 Oct 2022 844th SirBogman 🇺🇸 667 59 32ms 8 Sep 2022 845th zakariamouhid 667 106 9ms 14 May 2023 846th Yewzir 🇧🇪 666 87 1,002ms 15 Nov 2025 847th SirBogman 🇺🇸 666 150 38ms 4 Dec 2022 848th varhammer 666 152 7ms 7 Nov 2024 849th Schmitt-Very-Cool 666 160 496ms 30 Sep 2025 850th Herbert00709 🇵🇱 665 166 57ms 5 Apr 2024 851st MeWhenI 🇻🇦 664 246 8ms 30 Nov 2023 852nd swbbl 663 83 277ms 5 Feb 2022 852nd Feniske 🇫🇷 663 83 284ms 8 Aug 2022 854th VictorFordham 663 104 10ms 20 Feb 2023 854th Alex-x90 🇺🇸 663 104 10ms 3 Aug 2023 854th mathisfun271 663 104 9ms 5 Feb 2024 854th EnTerr 663 104 10ms 8 Sep 2024 854th KasperKivimaeki 🇫🇮 663 104 10ms 11 Jul 2025 859th roavin 663 116 413ms 23 Jun 2022 859th hamhub7 663 116 402ms 9 Aug 2022 859th bac0id 663 116 420ms 22 Sep 2023 859th CaedenHarper 🇨🇦 663 116 378ms 16 Oct 2025 863rd NewDefectus 🇮🇱 661 46 2ms 14 Jan 2022 864th Shanethegamer 🇺🇸 661 86 4ms 14 Aug 2024 865th BloodStormKnight 661 107 10ms 15 Oct 2022 865th LukeBridges 🇬🇧 661 107 11ms 8 Nov 2022 865th hacker112 🇸🇪 661 107 10ms 24 Jun 2024 868th akshatj27 🇦🇶 660 68 37ms 10 Jan 2022 868th Haksell 🇦🇶 660 68 37ms 23 Feb 2023 870th Lv0Sys 🇵🇱 660 197 41ms 13 Dec 2025 871st jhpaques 🇫🇷 659 131 2ms 13 Dec 2022 872nd madex 🇩🇪 658 183 159ms 7 Aug 2025 873rd Bonjour27891 🇻🇳 657 105 19ms 15 Jul 2022 873rd stefangimmillaro 657 105 10ms 26 Dec 2022 873rd betaveros 657 105 9ms 1 Jan 2023 873rd 5cw 🇺🇸 657 105 10ms 3 May 2023 873rd minhtrancccp 657 105 10ms 26 Sep 2023 873rd Emutis 🇱🇹 657 105 10ms 4 Feb 2025 879th HumanoidCPU 657 107 2,211ms 3 Mar 2025 880th DialFrost 🇸🇬 657 116 10ms 12 Dec 2024 First Prev 801–880 of 1,589 Next Last