The Continued Fractions hole will go live in approximately 11 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 159th sean-niemann 🇺🇸 901 93 5ms 19 Apr 2025 162nd btnlq 901 98 9ms 10 Jan 2022 162nd primo-ppcg 🇹🇭 901 98 11ms 13 Jan 2022 162nd m-tkach 🇺🇦 901 98 17ms 18 Jul 2023 162nd bizy-coder 901 98 11ms 25 Jul 2024 162nd sean-niemann 🇺🇸 901 98 17ms 28 Jan 2025 167th canissimia 🇦🇶 900 74 31ms 13 Jul 2022 168th DialFrost 🇸🇬 900 119 370ms 24 Sep 2025 168th Yewzir 🇧🇪 900 119 582ms 24 Sep 2025 168th namelessiw 900 119 399ms 7 Oct 2025 171st jared-hughes 899 79 10ms 12 Jan 2022 171st ZakkkkAttackkkk 🇵🇭 899 79 10ms 9 Jun 2022 171st ovs-code 🇩🇪 899 79 10ms 29 Sep 2023 171st uttumuttu 🇫🇮 899 79 10ms 21 Dec 2023 171st neel11235813 899 79 9ms 25 Mar 2024 171st levinwinter 899 79 10ms 21 Oct 2025 171st JOrE20 899 79 8ms 9 days ago 178th JayXon 🇺🇸 899 85 445ms 23 Jan 2024 178th pardouin 🇫🇷 899 85 484ms 26 Sep 2024 180th JayXon 🇺🇸 899 102 407ms 23 Jul 2025 180th edsrzf 🇳🇿 899 102 421ms 12 Sep 2025 182nd xnor-gate 899 125 143ms 11 Jan 2022 183rd JayXon 🇺🇸 899 148 288ms 11 Nov 2023 184th JayXon 🇺🇸 897 98 2ms 19 Feb 2024 184th sean-niemann 🇺🇸 897 98 2ms 19 Nov 2025 184th Steffan153 🇫🇮 897 98 2ms 14 days ago 187th GrayJoKing 🇦🇺 896 83 143ms 6 Aug 2024 188th Shanethegamer 🇺🇸 895 87 109ms 20 Oct 2022 188th JayXon 🇺🇸 895 87 110ms 25 Oct 2022 188th Steffan153 🇫🇮 895 87 115ms 24 Feb 2024 188th sean-niemann 🇺🇸 895 87 114ms 23 Mar 2025 188th edsrzf 🇳🇿 895 87 111ms 13 Oct 2025 193rd ovs-code 🇩🇪 894 85 82ms 27 May 2024 193rd DialFrost 🇸🇬 894 85 79ms 22 Jun 2024 193rd Steffan153 🇫🇮 894 85 80ms 15 Aug 2024 193rd sean-niemann 🇺🇸 894 85 82ms 6 Jul 2025 197th nwellnhof 🇩🇪 893 149 287ms 23 Jun 2023 198th AlephSquirrel 892 99 10ms 21 Jul 2023 198th Seek64 🇩🇪 892 99 10ms 24 Sep 2024 198th kg583 🇺🇸 892 99 10ms 30 Nov 2025 198th jared-hughes 892 99 10ms 30 Nov 2025 202nd JayXon 🇺🇸 892 126 122ms 22 Jun 2024 203rd canissimia 🇦🇶 891 61 39ms 18 Jul 2022 204th edsrzf 🇳🇿 890 67 834ms 13 days ago 204th Steffan153 🇫🇮 890 67 758ms 13 days ago 204th sean-niemann 🇺🇸 890 67 865ms 11 days ago 207th Steffan153 🇫🇮 890 87 459ms 21 Aug 2024 208th GrayJoKing 🇦🇺 889 92 81ms 21 Jun 2024 209th JayXon 🇺🇸 889 117 101ms 21 May 2023 210th janbehrens 🇩🇪 888 80 11ms 24 Nov 2022 210th DayDun 🇸🇪 888 80 11ms 22 Jan 2023 210th tayloia 🇬🇧 888 80 10ms 16 May 2023 210th voytxt 🇨🇿 888 80 9ms 4 Feb 2024 210th Salutations45 888 80 10ms 27 Nov 2024 210th emgordon154 888 80 10ms 16 Feb 2025 210th Lv0Sys 🇵🇱 888 80 10ms 19 hours ago 217th edsrzf 🇳🇿 888 119 8ms 2 Mar 2025 217th kg583 🇺🇸 888 119 8ms 17 days ago 219th KasperKivimaeki 🇫🇮 888 124 455ms 30 Jul 2025 220th clockworknazo 887 85 4ms 25 Mar 2023 220th edsrzf 🇳🇿 887 85 4ms 18 Nov 2025 222nd lifthrasiir 🇰🇷 886 35 2ms 29 Nov 2024 223rd ovs-code 🇩🇪 886 66 5ms 30 Oct 2024 223rd emgordon154 886 66 5ms 6 Jun 2025 225th edsrzf 🇳🇿 886 92 5ms 24 Jul 2025 226th ScottHamper 885 121 484ms 30 Nov 2025 227th JayXon 🇺🇸 884 109 474ms 24 Jul 2024 228th hallvabo 🇳🇴 883 100 10ms 11 Jan 2022 228th xsot 🇸🇬 883 100 11ms 21 Jul 2023 228th inventshah 883 100 10ms 3 Aug 2023 228th StefanHabel 🇨🇦 883 100 10ms 5 Sep 2023 228th neel11235813 883 100 10ms 9 Nov 2023 228th MeWhenI 🇻🇦 883 100 10ms 7 Dec 2023 228th lynn 883 100 9ms 21 Jun 2024 228th duckyluuk 🇳🇱 883 100 10ms 21 Jun 2024 228th DialFrost 🇸🇬 883 100 10ms 28 Jun 2024 228th Mukundan314 883 100 10ms 30 Apr 2025 228th ryyyn 🇺🇸 883 100 10ms 28 Oct 2025 228th CaedenHarper 🇨🇦 883 100 10ms 30 Nov 2025 240th sisyphus-ppcg 🇦🇺 883 104 8ms 19 Jul 2022 First Prev 161–240 of 1,606 Next Last