The Tower of Hanoi 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 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 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 451st drabart 🇵🇱 834 132 53ms 16 Dec 2023 452nd Bulmenisaurus 833 106 10ms 2 Feb 2025 453rd Yewzir 🇧🇪 833 113 2ms 29 Nov 2023 453rd drabart 🇵🇱 833 113 2ms 18 Dec 2023 455th dcgjb 831 67 249ms 14 Feb 2024 456th DialFrost 🇸🇬 831 90 130ms 3 Nov 2024 457th prplz 🇦🇺 831 93 364ms 18 Jan 2022 457th hemphen 831 93 346ms 28 Aug 2022 457th feberhard 831 93 372ms 6 Apr 2023 457th sean-niemann 🇺🇸 831 93 363ms 19 Apr 2025 461st emplv 🇱🇻 831 160 260ms 6 Jan 2023 461st KasperKivimaeki 🇫🇮 831 160 261ms 20 Oct 2025 463rd jared-hughes 831 200 10ms 18 Dec 2024 464th Shanethegamer 🇺🇸 830 63 2ms 13 May 2023 465th pardouin 🇫🇷 830 71 981ms 2 Sep 2025 466th inventshah 830 92 505ms 21 Jan 2024 466th GolfingSuccess 🇬🇷 830 92 467ms 2 Mar 2024 468th emplv 🇱🇻 830 101 4ms 3 Jul 2023 468th stefangimmillaro 830 101 4ms 12 Oct 2023 468th edsrzf 🇳🇿 830 101 5ms 7 Oct 2025 471st Shanethegamer 🇺🇸 828 107 132ms 24 May 2025 472nd Alex-x90 🇺🇸 828 133 52ms 8 Aug 2023 472nd Yewzir 🇧🇪 828 133 55ms 29 Nov 2023 472nd albanian-laundromat 828 133 3ms 22 Sep 2025 475th acotis 828 146 189ms 30 May 2025 476th Mandrzejy 🇵🇱 826 114 2ms 13 Sep 2024 476th AZTECCO 826 114 2ms 16 Sep 2025 478th CLOStrophobic 🇮🇹 826 123 8ms 21 Jan 2025 479th quimey 825 107 9ms 7 Mar 2023 479th fourth-bit 825 107 10ms 10 Jul 2024 479th fuzzylojik-golf 🇺🇸 825 107 9ms 19 May 2025 479th solisolu 825 107 10ms 5 days ago 483rd GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 484th error256 823 66 36ms 8 May 2025 485th m-tkach 🇺🇦 823 130 340ms 25 Sep 2025 486th annaproxy 822 94 357ms 19 Mar 2022 487th MeWhenI 🇻🇦 822 102 4ms 26 Nov 2023 488th Frowny 821 53 40ms 11 Jan 2022 489th Shanethegamer 🇺🇸 821 93 512ms 16 Jan 2024 489th Yewzir 🇧🇪 821 93 518ms 22 Jun 2024 491st Mandrzejy 🇵🇱 821 134 56ms 13 Sep 2024 492nd primo-ppcg 🇹🇭 820 164 27ms 25 Jun 2022 493rd edsrzf 🇳🇿 819 93 3,055ms 1 Sep 2025 494th madex 🇩🇪 819 115 2ms 10 Apr 2022 494th FragmentedCurve 819 115 2ms 22 Nov 2023 494th mathisfun271 819 115 2ms 5 Feb 2024 497th Shanethegamer 🇺🇸 819 124 7ms 27 Aug 2024 498th DialFrost 🇸🇬 819 286 137ms 22 Apr 2025 499th btnlq 818 125 20ms 12 Jan 2022 500th Steffan153 🇫🇮 817 57 4ms 6 Jan 2023 500th Natanaelel 🇸🇪 817 57 5ms 13 May 2023 502nd prplz 🇦🇺 817 108 10ms 11 Jan 2022 502nd galloj 🇨🇿 817 108 9ms 21 Sep 2022 502nd TaserTheFox 🇺🇸 817 108 10ms 3 Apr 2023 502nd jatloe 817 108 10ms 26 Aug 2024 502nd cros107 🇦🇺 817 108 9ms 10 Aug 2025 507th lynn 816 38 39ms 22 Jul 2022 507th MeWhenI 🇻🇦 816 38 37ms 25 Aug 2022 507th 5cw 🇺🇸 816 38 3ms 27 May 2024 510th albanian-laundromat 816 76 707ms 23 days ago 510th error256 816 76 720ms 9 days ago 512th itsh01 816 87 9ms 13 Mar 2022 512th AlephSquirrel 816 87 9ms 15 Feb 2023 512th danielphilpottwork 816 87 10ms 20 Dec 2023 512th Attero 🇸🇪 816 87 9ms 22 Dec 2023 516th DialFrost 🇸🇬 816 118 467ms 27 Nov 2024 517th kg583 🇺🇸 816 154 38ms 13 days ago 518th sean-niemann 🇺🇸 816 163 267ms 30 Aug 2023 518th Yewzir 🇧🇪 816 163 266ms 7 Feb 2024 518th CaedenHarper 🇨🇦 816 163 272ms 27 days ago 521st Irratix 🇳🇱 815 135 370ms 14 May 2022 522nd janbehrens 🇩🇪 814 103 4ms 2 Jul 2023 523rd frankgraziano 814 288 623ms 7 Aug 2025 524th Babafaba 813 94 451ms 46 hours ago 525th plcc0 813 125 7ms 23 Mar 2025 First Prev 451–525 of 1,553 Next Last
