The Tower of Hanoi hole will go live in approximately 3 hours. Why not try and solve it ahead of time?
Arabic to Roman 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 601st stefangimmillaro 680 168 3,872ms 10 Nov 2024 601st MeWhenI 🇻🇦 680 168 2,524ms 2 Dec 2024 603rd DaCuteRaccoon 679 71 16ms 3 Dec 2022 604th albanian-laundromat 679 115 365ms 9 Aug 2025 605th kyleclaassen 678 127 27ms 22 May 2023 605th emgordon154 678 127 29ms 1 Aug 2024 607th kimbo 🇺🇸 678 227 298ms 17 Dec 2022 608th GrayJoKing 🇦🇺 677 68 13ms 15 Apr 2021 609th southpolenator 677 199 67ms 10 Jun 2023 610th janbehrens 🇩🇪 675 176 346ms 17 Apr 2025 611th targrik 674 129 42ms 4 Sep 2025 612th Shanethegamer 🇺🇸 673 116 472ms 16 Jan 2024 613th Ripick 673 184 425ms 12 Jul 2025 614th janbehrens 🇩🇪 673 215 363ms 7 Jan 2022 615th SirBogman 🇺🇸 672 58 8ms 22 Mar 2022 616th MeWhenI 🇻🇦 672 116 672ms 1 Feb 2024 617th MeWhenI 🇻🇦 672 141 14ms 1 Feb 2024 618th Shanethegamer 🇺🇸 672 177 403ms 28 Jan 2024 619th Shanethegamer 🇺🇸 671 115 567ms 8 Jan 2022 620th duckyluuk 🇳🇱 671 181 67ms 16 Dec 2024 621st JDiLenarda 🇫🇷 671 205 1,403ms 22 Nov 2023 622nd Shanethegamer 🇺🇸 669 159 143ms 24 May 2025 623rd Shanethegamer 🇺🇸 669 185 616ms 28 Jan 2024 624th Shanethegamer 🇺🇸 669 214 120ms 28 Jan 2024 625th AlephSquirrel 667 129 20ms 15 Aug 2022 625th 5cw 🇺🇸 667 129 20ms 8 May 2025 627th stackotter 665 227 112ms 29 May 2023 628th Jonatan6 🇩🇰 663 203 66ms 3 Aug 2023 629th SirBogman 🇺🇸 663 375 547ms 23 Nov 2022 630th primo-ppcg 🇹🇭 662 130 21ms 6 Oct 2021 631st Shanethegamer 🇺🇸 661 233 293ms 28 Jan 2024 631st targrik 661 233 285ms 3 Jul 2025 633rd Yewzir 🇧🇪 660 161 174ms 13 Sep 2023 634th darkoboshkovski 659 155 12ms 12 Jun 2023 635th MeWhenI 🇻🇦 659 176 9ms 16 Jun 2023 636th MeWhenI 🇻🇦 659 249 169ms 1 Feb 2024 637th scpchicken 🇵🇼 657 70 18ms 6 Jan 2023 638th p-vf 🇨🇭 657 181 383ms 21 Nov 2021 639th Steffan153 🇫🇮 656 119 591ms 30 May 2024 640th annaproxy 656 222 346ms 1 Aug 2022 641st prestosilver 🇺🇸 655 156 11ms 9 days ago 642nd MichalMarsalek 🇨🇿 655 189 433ms 22 Jan 2023 642nd DestyNova 🇮🇪 655 189 441ms 15 Apr 2025 644th jared-hughes 654 97 51ms 16 Apr 2022 645th AlephSquirrel 654 133 21ms 15 Feb 2023 645th jbt 654 133 15ms 25 Dec 2023 647th clockworknazo 653 140 24ms 27 Feb 2023 648th stefangimmillaro 653 182 438ms 17 Sep 2024 649th BlankSpruce 651 207 388ms 26 Aug 2022 650th Jonatan6 🇩🇰 650 157 11ms 4 Aug 2023 651st janbehrens 🇩🇪 649 134 14ms 12 Nov 2023 652nd HumanoidCPU 649 223 420ms 22 days ago 653rd mokymok 🇺🇸 647 133 19ms 23 Jul 2021 653rd evan18c 647 133 23ms 27 Apr 2025 655th kmathis22 646 224 421ms 24 Oct 2025 656th Shanethegamer 🇺🇸 645 147 48ms 28 Jan 2024 657th emgordon154 645 177 2,603ms 9 Aug 2025 658th MeWhenI 🇻🇦 644 165 175ms 1 Feb 2024 659th nsprd 644 209 393ms 19 Jan 2024 660th Fishron 642 134 22ms 21 Oct 2021 661st MeWhenI 🇻🇦 642 159 12ms 25 Aug 2023 662nd AlephSquirrel 640 122 530ms 21 Jan 2024 662nd JunkIce 640 122 437ms 3 Dec 2024 664th itsh01 640 136 14ms 9 Aug 2021 665th jared-hughes 640 181 8ms 18 Jul 2022 666th JGDoerrer 639 257 188ms 15 Feb 2022 667th jared-hughes 638 211 381ms 24 Jun 2022 668th emgordon154 635 123 486ms 1 Aug 2024 669th stefangimmillaro 635 137 16ms 12 Sep 2024 670th MeWhenI 🇻🇦 635 195 814ms 27 Jul 2024 671st xnor-gate 633 136 337ms 4 Dec 2021 671st cingulataluke 633 136 47ms 29 Aug 2023 673rd KatieLG 🇬🇧 632 143 1,107ms 17 Nov 2023 674th kkoenig 631 244 293ms 30 Dec 2023 675th okaponta 629 261 185ms 13 Jan 2024 First Prev 601–675 of 1,849 Next Last