ISBN in all languages in bytes. 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 Bytes Time Submitted 316th Just4FunCoder 866 102 9ms 17 Feb 2024 316th Yewzir 🇧🇪 866 102 10ms 22 Jun 2024 316th bzijlema 🇳🇱 866 102 10ms 15 Oct 2024 316th moustave 866 102 10ms 25 Jun 2025 316th Babafaba 866 102 10ms 28 Nov 2025 316th Flekay 🇩🇪 866 102 11ms 20 days ago 316th FoxInTheClouds 866 102 10ms 20 days ago 316th snoozingnewt 🇨🇦 866 102 10ms 19 days ago 316th edsrzf 🇳🇿 866 102 11ms 8 days ago 330th primo-ppcg 🇹🇭 865 151 42ms 26 Apr 2025 331st nwellnhof 🇩🇪 864 54 4ms 22 May 2022 332nd primo-ppcg 🇹🇭 864 97 5ms 4 Jul 2023 333rd HumanoidCPU 864 120 110ms 3 Mar 2025 334th edsrzf 🇳🇿 864 124 488ms 24 Sep 2025 334th dokutan 864 124 491ms 24 Sep 2025 336th arjanadriaanse 🇳🇱 864 130 141ms 8 Feb 2022 336th annaproxy 864 130 144ms 8 Feb 2022 338th ovs-code 🇩🇪 863 63 36ms 9 May 2023 338th nwellnhof 🇩🇪 863 63 36ms 18 Jul 2023 340th Shanethegamer 🇺🇸 861 36 2ms 16 Jan 2022 340th AlephSquirrel 861 36 40ms 29 Dec 2022 340th bstrat 861 36 2ms 1 Jul 2024 343rd rucin93 🇵🇱 861 102 2ms 10 Jul 2025 344th edsrzf 🇳🇿 861 143 30ms 10 Feb 2026 345th MeWhenI 🇻🇦 860 90 445ms 9 Aug 2023 346th edsrzf 🇳🇿 860 103 156ms 17 Oct 2025 347th edsrzf 🇳🇿 860 119 8ms 2 Mar 2025 347th kg583 🇺🇸 860 119 7ms 10 Feb 2026 349th ovs-code 🇩🇪 860 129 61ms 10 Feb 2023 350th primo-ppcg 🇹🇭 859 117 36ms 20 Jun 2022 351st ovs-code 🇩🇪 859 119 15ms 4 Jul 2024 351st GrayJoKing 🇦🇺 859 119 15ms 5 Jul 2024 353rd JayXon 🇺🇸 859 172 1,775ms 22 Apr 2024 354th primo-ppcg 🇹🇭 858 95 4ms 21 Aug 2023 354th Shanethegamer 🇺🇸 858 95 4ms 25 Mar 2024 354th kg583 🇺🇸 858 95 4ms 10 Feb 2026 357th Shanethegamer 🇺🇸 858 122 1,360ms 21 Apr 2022 358th Natanaelel 🇸🇪 858 131 148ms 18 May 2025 359th primo-ppcg 🇹🇭 857 61 2ms 19 Nov 2022 360th MeWhenI 🇻🇦 857 90 13ms 15 Jan 2025 361st SirBogman 🇺🇸 857 103 10ms 10 May 2022 361st janbehrens 🇩🇪 857 103 9ms 23 Jun 2023 361st FlorianCassayre 🇫🇷 857 103 9ms 9 Sep 2023 361st orthoplex 🇨🇽 857 103 10ms 25 Nov 2023 361st abc7-12 857 103 10ms 26 Jun 2024 361st KatieLG 🇬🇧 857 103 10ms 8 Jul 2024 361st madex 🇩🇪 857 103 10ms 7 Aug 2025 361st Lv0Sys 🇵🇱 857 103 11ms 6 Dec 2025 361st FortuiteMan 🇫🇷 857 103 10ms 18 Dec 2025 361st firegene 🇮🇪 857 103 10ms 11 days ago 361st Emutis 🇱🇹 857 103 10ms 3 days ago 372nd CaedenHarper 🇨🇦 857 125 544ms 3 Oct 2025 373rd m-tkach 🇺🇦 856 83 10ms 10 Jan 2022 373rd trinityy-7 856 83 11ms 13 Mar 2024 373rd penbuvt 856 83 10ms 7 Nov 2024 376th targrik 855 98 5ms 30 Jan 2025 377th Alex-x90 🇺🇸 855 108 2ms 8 Aug 2023 378th Shanethegamer 🇺🇸 855 144 29ms 10 Feb 2026 379th snoozingnewt 🇨🇦 854 89 77ms 22 Nov 2025 380th Shanethegamer 🇺🇸 854 126 2ms 10 Sep 2022 380th inventshah 854 126 2ms 18 Sep 2022 382nd GrayJoKing 🇦🇺 853 95 69ms 18 Sep 2023 383rd MeWhenI 🇻🇦 853 103 2ms 13 Oct 2023 384th Shanethegamer 🇺🇸 853 113 437ms 21 Apr 2022 384th Steffan153 🇫🇮 853 113 456ms 23 Jul 2024 384th sean-niemann 🇺🇸 853 113 469ms 23 Mar 2025 387th GrayJoKing 🇦🇺 853 118 7ms 15 days ago 387th edsrzf 🇳🇿 853 118 6ms 6 days ago 389th stefangimmillaro 853 156 291ms 20 Oct 2023 390th 386asm 🇺🇸 852 118 38ms 5 May 2023 391st Shanethegamer 🇺🇸 852 120 14ms 14 Dec 2023 391st error256 852 120 5ms 10 Feb 2026 393rd the-zammers 851 132 140ms 1 Oct 2023 394th sisyphus-ppcg 🇦🇺 849 64 37ms 11 Jan 2022 394th GrayJoKing 🇦🇺 849 64 36ms 10 Feb 2022 396th VictorFordham 849 104 10ms 20 Feb 2023 396th Alex-x90 🇺🇸 849 104 10ms 3 Aug 2023 396th mathisfun271 849 104 9ms 5 Feb 2024 396th EnTerr 849 104 10ms 8 Sep 2024 396th KasperKivimaeki 🇫🇮 849 104 10ms 11 Jul 2025 First Prev 321–400 of 1,606 Next Last