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 451st za3k 856 58 19ms 20 Nov 2022 451st MeWhenI 🇻🇦 856 58 26ms 10 Oct 2023 451st marcin7Cd 856 58 15ms 28 Apr 2025 451st jipsong 🇩🇪 856 58 23ms 20 Jun 2025 451st luuumine 🇫🇷 856 58 24ms 7 days ago 456th edsrzf 🇳🇿 856 73 44ms 9 Sep 2025 457th primo-ppcg 🇹🇭 855 46 49ms 20 Nov 2022 457th Shanethegamer 🇺🇸 855 46 58ms 21 Nov 2022 459th snoozingnewt 🇺🇸 854 103 108ms 102 mins ago 460th emplv 🇱🇻 853 80 29ms 30 Nov 2022 461st Steffan153 🇫🇮 852 86 53ms 14 Jan 2023 461st tailorspy 852 86 53ms 24 May 2024 461st snyderek 🇺🇸 852 86 53ms 13 Oct 2024 464th Liibe 850 81 332ms 25 Sep 2025 464th Yax42 🇫🇷 850 81 342ms 6 Oct 2025 464th MeWhenI 🇻🇦 850 81 350ms 20 days ago 467th primo-ppcg 🇹🇭 849 62 77ms 20 Nov 2022 468th kg583 🇺🇸 849 63 52ms 26 Aug 2025 469th MarcMush 🇫🇷 848 49 387ms 11 Jan 2024 469th antimon2 🇯🇵 848 49 266ms 5 May 2024 471st MeWhenI 🇻🇦 846 68 89ms 24 Dec 2024 471st pardouin 🇫🇷 846 68 168ms 23 Apr 2025 473rd GrayJoKing 🇦🇺 845 73 47ms 26 Oct 2023 474th Shanethegamer 🇺🇸 845 80 389ms 26 Apr 2023 474th DialFrost 🇸🇬 845 80 431ms 3 Jun 2024 474th ovs-code 🇩🇪 845 80 427ms 23 Jul 2024 477th ovs-code 🇩🇪 845 149 518ms 27 Mar 2025 478th Shanethegamer 🇺🇸 844 54 360ms 16 Jan 2024 478th Yewzir 🇧🇪 844 54 369ms 24 Feb 2024 478th snoozingnewt 🇺🇸 844 54 536ms 17 Oct 2025 481st DialFrost 🇸🇬 843 81 26ms 23 Dec 2024 481st fuzzylojik-golf 🇺🇸 843 81 30ms 20 Aug 2025 483rd m-tkach 🇺🇦 842 87 58ms 22 Nov 2022 483rd sean-niemann 🇺🇸 842 87 59ms 7 Feb 2023 485th GrayJoKing 🇦🇺 842 92 30ms 26 Oct 2023 486th QuincyNash 🇺🇸 841 59 23ms 1 Dec 2022 486th yzhs 🇩🇪 841 59 33ms 23 Jun 2023 486th AlexanderFair 841 59 22ms 18 Jul 2023 486th Grrisly 841 59 17ms 30 Mar 2024 490th anter69 🇭🇺 837 47 58ms 24 Jan 2023 490th emgordon154 837 47 47ms 19 Mar 2025 492nd MeWhenI 🇻🇦 837 51 707ms 15 Sep 2025 493rd Steffan153 🇫🇮 837 56 29ms 9 Feb 2023 493rd sean-niemann 🇺🇸 837 56 27ms 2 Aug 2024 495th MeWhenI 🇻🇦 836 64 53ms 9 Apr 2024 496th ovs-code 🇩🇪 835 74 384ms 12 Nov 2023 497th duckyluuk 🇳🇱 833 69 102ms 25 Dec 2024 498th Steffan153 🇫🇮 833 75 46ms 22 Aug 2024 499th primo-ppcg 🇹🇭 833 82 27ms 20 Nov 2022 500th primo-ppcg 🇹🇭 832 135 1,567ms 15 Sep 2025 500th emgordon154 832 135 1,574ms 16 Sep 2025 502nd janbehrens 🇩🇪 831 50 334ms 11 Jul 2023 502nd Yewzir 🇧🇪 831 50 276ms 26 Feb 2024 504th emgordon154 831 62 2,834ms 8 Nov 2024 505th lynn 830 31 127ms 16 Oct 2023 506th SirBogman 🇺🇸 829 60 53ms 9 Jan 2024 507th GolfingSuccess 🇬🇷 828 29 4ms 25 Feb 2023 507th 5cw 🇺🇸 828 29 5ms 10 Apr 2023 507th codereport 🇨🇦 828 29 3ms 17 May 2024 510th neel11235813 828 55 382ms 27 Mar 2024 510th dokutan 828 55 345ms 14 Jun 2024 512th janbehrens 🇩🇪 827 60 27ms 20 Nov 2022 512th Omega65536 🇩🇪 827 60 17ms 24 Nov 2022 512th Fracture17 827 60 20ms 13 Apr 2023 512th GolfingSuccess 🇬🇷 827 60 18ms 17 Oct 2023 512th bzijlema 🇳🇱 827 60 22ms 22 Jul 2024 512th bizy-coder 827 60 18ms 15 Aug 2024 512th KasperKivimaeki 🇫🇮 827 60 25ms 1 Jul 2025 519th Ripick 827 69 146ms 8 Jan 2023 519th dokutan 827 69 148ms 31 Dec 2023 519th Yewzir 🇧🇪 827 69 146ms 14 Feb 2024 522nd dokutan 825 83 122ms 27 Mar 2024 523rd MeWhenI 🇻🇦 824 64 36ms 12 Dec 2023 523rd emgordon154 824 64 23ms 10 Dec 2024 525th jared-hughes 823 89 56ms 20 Nov 2022 First Prev 451–525 of 1,783 Next Last