The Continued Fractions hole will go live in approximately 4 hours. Why not try and solve it ahead of time?
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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 240th m-tkach 🇺🇦 883 104 7ms 29 Mar 2023 240th UnderKoen 🇳🇱 883 104 8ms 20 Apr 2023 243rd canissimia 🇦🇶 883 105 4ms 11 Jan 2022 244th Steffan153 🇫🇮 882 95 6ms 8 Aug 2024 245th Kacarott 🇦🇺 881 92 63ms 13 Sep 2024 246th Shanethegamer 🇺🇸 881 120 14ms 14 Dec 2023 246th Steffan153 🇫🇮 881 120 7ms 15 Dec 2023 246th error256 881 120 6ms 17 days ago 249th JayXon 🇺🇸 881 125 2ms 25 Oct 2022 249th edsrzf 🇳🇿 881 125 2ms 5 Jul 2025 251st marshallward 🇺🇸 881 148 39ms 6 May 2025 251st SirBogman 🇺🇸 881 148 41ms 3 Jun 2025 253rd edsrzf 🇳🇿 881 151 278ms 1 Sep 2025 254th Lydxn 🇨🇦 880 53 3ms 27 Feb 2023 255th ovs-code 🇩🇪 880 105 1ms 17 Feb 2024 256th ovs-code 🇩🇪 879 100 2ms 11 Oct 2023 256th edsrzf 🇳🇿 879 100 2ms 26 Jul 2025 258th Yax42 🇫🇷 878 122 493ms 8 Oct 2025 259th Natanaelel 🇸🇪 877 51 121ms 6 Feb 2025 260th iliazeus 877 81 10ms 6 Nov 2023 260th Yewzir 🇧🇪 877 81 9ms 1 Dec 2023 262nd JayXon 🇺🇸 877 85 143ms 28 Oct 2024 263rd GrayJoKing 🇦🇺 877 86 4ms 4 Feb 2023 264th StarmaQ 877 99 2ms 12 Jan 2022 264th Shanethegamer 🇺🇸 877 99 2ms 12 Oct 2022 264th adriweb 🇫🇷 877 99 2ms 15 Sep 2023 267th JayXon 🇺🇸 877 101 120ms 24 May 2025 268th primo-ppcg 🇹🇭 876 62 37ms 11 Jan 2022 268th Steffan153 🇫🇮 876 62 35ms 28 Jun 2024 268th Natanaelel 🇸🇪 876 62 35ms 18 May 2025 268th xsot 🇸🇬 876 62 39ms 6 Jul 2025 268th sean-niemann 🇺🇸 876 62 34ms 3 Aug 2025 268th pardouin 🇫🇷 876 62 39ms 2 Sep 2025 274th GrayJoKing 🇦🇺 876 88 9ms 31 Jan 2025 275th edsrzf 🇳🇿 876 111 8ms 15 Oct 2025 276th m-tkach 🇺🇦 876 154 66ms 30 Dec 2022 277th stefangimmillaro 875 87 2,291ms 24 Nov 2024 277th emgordon154 875 87 2,364ms 6 Mar 2025 279th lyphyser 874 50 51ms 17 Apr 2025 280th sisyphus-ppcg 🇦🇺 874 87 74ms 16 Dec 2025 281st GolfingSuccess 🇬🇷 874 101 10ms 10 Jan 2022 281st annaproxy 874 101 10ms 15 Jan 2022 281st 0e4ef622 874 101 10ms 21 Jun 2022 281st Shanethegamer 🇺🇸 874 101 10ms 20 Oct 2022 281st bricknellj 874 101 9ms 22 Jun 2024 281st keelimeguy 🇺🇸 874 101 11ms 15 May 2025 287th IanUtley 874 117 16ms 17 Jul 2024 288th Shanethegamer 🇺🇸 874 119 128ms 23 Apr 2022 288th MeWhenI 🇻🇦 874 119 143ms 13 Nov 2022 288th Lydxn 🇨🇦 874 119 122ms 4 Mar 2023 288th stefangimmillaro 874 119 131ms 22 Apr 2023 292nd Shanethegamer 🇺🇸 874 126 2ms 10 Sep 2022 292nd inventshah 874 126 2ms 18 Sep 2022 292nd inventshah 874 126 58ms 7 Aug 2024 295th primo-ppcg 🇹🇭 874 269 12ms 10 Jul 2025 296th sisyphus-ppcg 🇦🇺 873 59 13ms 3 Oct 2024 296th retrohun 873 59 26ms 25 Dec 2024 298th DialFrost 🇸🇬 872 60 2ms 25 Dec 2024 299th inventshah 872 106 2ms 7 Aug 2024 300th edsrzf 🇳🇿 871 95 117ms 28 Nov 2025 301st btnlq 870 64 296ms 12 Jan 2022 301st nwellnhof 🇩🇪 870 64 281ms 27 Aug 2024 303rd Shanethegamer 🇺🇸 870 101 2ms 11 Nov 2023 303rd DialFrost 🇸🇬 870 101 2ms 25 Jan 2024 303rd Yewzir 🇧🇪 870 101 2ms 19 Nov 2025 306th jared-hughes 869 100 2ms 6 Apr 2022 306th koipondx86 869 100 2ms 7 Nov 2024 308th ovs-code 🇩🇪 869 112 7ms 5 Jul 2024 309th MeWhenI 🇻🇦 867 84 8ms 2 Aug 2023 310th Steffan153 🇫🇮 867 86 125ms 2 hours ago 311th ovs-code 🇩🇪 867 87 4ms 8 Mar 2023 312th Steffan153 🇫🇮 867 94 4ms 11 Dec 2023 313th HumanoidCPU 867 120 122ms 3 Mar 2025 314th neihousaigaai 866 82 10ms 11 Jan 2022 314th SirFireball3521 866 82 9ms 31 Oct 2022 314th thisishowmymindworks 🇳🇴 866 82 11ms 10 Jun 2023 317th anter69 🇭🇺 866 102 9ms 13 Jan 2022 317th Irratix 🇳🇱 866 102 9ms 5 Jul 2022 317th b10011 🇫🇮 866 102 10ms 14 Jan 2023 317th CornerMercury 🇬🇧 866 102 9ms 13 Sep 2023 First Prev 241–320 of 1,607 Next Last