The Tower of Hanoi hole will go live in approximately 39 hours. Why not try and solve it ahead of time?
Cubes 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 826th snoozingnewt 🇺🇸 373 318 9ms 5 Oct 2025 827th qwjhvbxi 372 254 10ms 8 Feb 2024 828th MadonnaMat 371 223 36ms 21 Jan 2022 829th DrPiranoid 371 255 11ms 25 Sep 2022 829th UriyaBA 371 255 9ms 21 Dec 2023 831st HumanoidCPU 371 468 3ms 4 Mar 2025 832nd Secozzi 369 256 9ms 21 Mar 2021 832nd tobyLovick 369 256 10ms 5 Nov 2023 832nd WillConker 369 256 9ms 25 Oct 2024 835th Shanethegamer 🇺🇸 369 301 3ms 20 Jan 2021 836th acollett89 369 321 9ms 4 Aug 2025 837th Jaykul 368 256 203ms 11 May 2024 838th jacklynnepenick 368 257 13ms 21 Aug 2021 838th brimstonetrader 368 257 9ms 28 Feb 2024 840th shen-hong-xin 365 227 44ms 7 Jul 2021 841st JoeBigToe 365 258 183ms 9 Jun 2020 842nd gnlow 🇰🇷 365 325 9ms 3 May 2020 843rd SteveL-MSFT 364 259 208ms 6 Jun 2020 844th SniperSmiley 🇺🇸 364 260 9ms 30 May 2021 845th vroup 🇩🇰 363 327 8ms 20 Sep 2022 846th adamnielson42 🇺🇸 363 555 6ms 2 Oct 2023 847th snltd 362 229 35ms 16 Oct 2019 848th cros107 🇦🇺 362 261 10ms 26 Jun 2023 848th davidtiemstra 362 261 9ms 12 Jul 2023 850th Maximizer02 362 414 7ms 30 Jul 2024 851st Natanaelel 🇸🇪 361 213 124ms 7 Oct 2021 852nd mpogudintrade 360 477 380ms 30 Oct 2023 853rd SirFireball3521 359 214 147ms 8 Mar 2023 854th StardustGogeta 359 263 9ms 17 Nov 2019 854th ValdeQwerty 359 263 11ms 10 Sep 2020 856th unfinishedprogram 359 330 9ms 12 Jul 2024 857th jgbaldwinbrown 359 483 3ms 21 Sep 2021 858th dokutan 359 555 472ms 21 days ago 859th dokutan 359 742 489ms 14 Jan 2025 860th eddvrs 358 264 10ms 22 Dec 2023 861st neel11235813 358 331 8ms 1 Feb 2024 862nd m-tkach 🇺🇦 358 837 1ms 18 May 2022 863rd alangodfrey 357 265 9ms 30 Jan 2019 863rd ThatAlo 357 265 10ms 23 May 2023 865th Shanethegamer 🇺🇸 357 473 4ms 2 Jul 2023 866th gjh71 🇳🇱 356 265 212ms 27 Dec 2020 867th bbakersmith 356 343 15ms 30 Jul 2021 868th Natanaelel 🇸🇪 355 230 37ms 1 Mar 2025 869th twocatsinatrenchcoat 355 266 10ms 24 Nov 2022 869th l-donovan 355 266 10ms 2 Feb 2024 869th dirckvdende 355 266 9ms 6 Jul 2025 872nd sleepyStick 354 267 9ms 11 Mar 2022 872nd Rubiksmath 354 267 9ms 29 Sep 2024 874th zuparnowa 353 268 9ms 11 Feb 2019 874th henrytranter 353 268 9ms 20 Sep 2019 874th Dazza314 🇬🇧 353 268 13ms 27 Oct 2020 877th n0es 351 269 9ms 7 Oct 2022 878th UniBlueFerox 350 270 11ms 21 Oct 2020 879th Shanethegamer 🇺🇸 350 348 15ms 8 Sep 2021 880th rak1507 🇬🇧 349 271 10ms 26 Nov 2021 881st dillon-duncando 348 272 11ms 4 Oct 2022 881st DrPrettyman 348 272 9ms 25 Jul 2023 881st strogor 348 272 10ms 9 Jun 2025 884th dokutan 348 587 258ms 25 Mar 2025 885th dsntzn 🇸🇰 347 342 8ms 10 Aug 2020 886th iznax 347 495 343ms 21 Nov 2021 887th msbranicky 346 275 398ms 15 Jan 2024 888th omri2001 345 274 9ms 22 Oct 2022 888th cingulataluke 345 274 11ms 26 Aug 2023 890th KatieLG 🇬🇧 345 773 513ms 7 Jul 2025 891st csharpython 344 241 34ms 14 Sep 2025 892nd OppositeShark 341 277 9ms 19 Jul 2022 893rd robertovers 340 278 11ms 1 Oct 2023 894th GeorgeStechman 🇬🇧 340 349 9ms 23 Jun 2022 895th hyvyys 338 280 10ms 11 Sep 2020 895th EyalLitvin 338 280 9ms 25 Nov 2022 895th ztuned 338 280 10ms 26 Jul 2023 895th f-tucker 338 280 9ms 30 May 2024 899th varhammer 🇷🇺 338 491 16ms 13 Dec 2023 900th rbertram90 🇬🇧 338 499 4ms 18 Nov 2024 First Prev 826–900 of 1,641 Next Last