The Tower of Hanoi hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Pernicious Numbers (Long) 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 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 Chars Time Submitted 375th pardouin 🇫🇷 886 35 312ms 21 Apr 2025 377th anter69 🇭🇺 886 38 1,084ms 2 Sep 2024 378th jipsong 🇩🇪 885 65 150ms 10 Jun 2024 379th primo-ppcg 🇹🇭 884 47 344ms 20 Nov 2022 380th canissimia 🇦🇶 884 165 10ms 18 Nov 2023 381st Shanethegamer 🇺🇸 883 78 356ms 25 Sep 2025 382nd GrayJoKing 🇦🇺 881 58 5ms 26 Oct 2023 383rd primo-ppcg 🇹🇭 879 72 407ms 20 Nov 2022 384th Lydxn 🇨🇦 878 54 36ms 20 Jul 2023 385th Steffan153 🇫🇮 878 60 24ms 11 Dec 2023 385th Yewzir 🇧🇪 878 60 35ms 17 Dec 2023 385th dokutan 878 60 24ms 9 May 2024 385th edsrzf 🇳🇿 878 60 25ms 5 Jan 2025 385th kg583 🇺🇸 878 60 23ms 31 Jul 2025 385th sean-niemann 🇺🇸 878 60 23ms 17 Aug 2025 391st GrayJoKing 🇦🇺 878 65 127ms 26 Oct 2023 392nd canissimia 🇦🇶 878 113 613ms 13 Dec 2022 393rd snoozingnewt 🇺🇸 877 60 92ms 9 Oct 2025 394th snoozingnewt 🇺🇸 877 78 128ms 9 Oct 2025 395th JayXon 🇺🇸 877 128 1,589ms 15 Sep 2025 396th commandblockguy 🇺🇸 876 52 373ms 15 Jan 2024 397th DialFrost 🇸🇬 876 55 31ms 24 Mar 2025 398th Andriamanitra 🇫🇮 874 45 61ms 17 Jul 2023 399th DialFrost 🇸🇬 874 144 440ms 28 Mar 2025 399th pardouin 🇫🇷 874 144 594ms 23 Apr 2025 401st primo-ppcg 🇹🇭 873 55 37ms 20 Nov 2022 402nd primo-ppcg 🇹🇭 873 99 257ms 20 Nov 2022 403rd stefangimmillaro 872 57 47ms 20 Nov 2022 403rd marshallward 🇺🇸 872 57 44ms 21 Nov 2022 403rd Steffan153 🇫🇮 872 57 58ms 30 Jan 2023 403rd DialFrost 🇸🇬 872 57 47ms 22 Oct 2024 407th sisyphus-ppcg 🇦🇺 872 79 344ms 2 days ago 408th pardouin 🇫🇷 871 49 700ms 29 Aug 2025 409th thehylian 871 57 21ms 2 Jan 2023 409th FlorianCassayre 🇫🇷 871 57 19ms 18 Jan 2023 409th bricknellj 871 57 16ms 17 Mar 2023 409th davecame 871 57 30ms 2 Oct 2023 409th Betuaredead 871 57 18ms 13 Nov 2023 409th Bulmenisaurus 871 57 17ms 21 Jul 2024 409th ryyyn 🇺🇸 871 57 24ms 25 Jun 2025 409th solisolu 871 57 18ms 8 days ago 417th jared-hughes 871 160 48ms 21 Jul 2023 418th pardouin 🇫🇷 868 70 1,253ms 23 Apr 2025 419th emgordon154 868 145 699ms 19 Mar 2025 420th codewrite 🇬🇧 867 73 325ms 11 Jul 2025 420th fuzzylojik-golf 🇺🇸 867 73 373ms 8 Sep 2025 422nd MeWhenI 🇻🇦 867 88 238ms 9 Apr 2024 423rd Shanethegamer 🇺🇸 866 48 380ms 21 Nov 2022 424th Steffan153 🇫🇮 866 78 427ms 17 Feb 2023 424th sean-niemann 🇺🇸 866 78 420ms 20 May 2023 424th fuzzylojik-golf 🇺🇸 866 78 507ms 20 Aug 2025 427th ovs-code 🇩🇪 866 161 49ms 23 May 2025 428th primo-ppcg 🇹🇭 865 192 37ms 13 Aug 2025 429th Steffan153 🇫🇮 864 79 36ms 21 Feb 2023 429th Lydxn 🇨🇦 864 79 26ms 22 Feb 2023 429th m-tkach 🇺🇦 864 79 29ms 15 Mar 2023 429th sean-niemann 🇺🇸 864 79 42ms 14 Jan 2025 433rd Shanethegamer 🇺🇸 863 39 915ms 21 Nov 2022 433rd snoozingnewt 🇺🇸 863 39 781ms 23 Oct 2025 435th inventshah 862 85 56ms 29 Nov 2022 435th xsot 🇸🇬 862 85 54ms 28 Apr 2024 437th saito-ta 🇯🇵 861 41 13ms 24 Dec 2024 438th annaproxy 861 56 23ms 8 Jan 2023 438th sean-niemann 🇺🇸 861 56 22ms 25 Mar 2025 440th kmathis22 861 80 343ms 28 Oct 2025 441st SirBogman 🇺🇸 860 53 371ms 20 Jan 2024 441st MeWhenI 🇻🇦 860 53 439ms 13 Jul 2024 443rd Steffan153 🇫🇮 859 67 132ms 22 Nov 2022 444th stefangimmillaro 858 30 314ms 20 Nov 2022 445th lynn 858 72 260ms 27 Jan 2023 446th rak1507 🇬🇧 857 28 41ms 27 Jan 2023 446th lifthrasiir 🇰🇷 857 28 2ms 27 Nov 2024 448th ovs-code 🇩🇪 857 131 1,565ms 14 Sep 2025 449th Steffan153 🇫🇮 856 52 71ms 12 Aug 2024 449th ovs-code 🇩🇪 856 52 60ms 10 Oct 2024 First Prev 376–450 of 1,784 Next Last