The Tower of Hanoi hole will go live in approximately 31 hours. Why not try and solve it ahead of time?
Jacobi Symbol 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 janbehrens 🇩🇪 567 138 285ms 12 May 2022 452nd martinnorling 🇸🇪 566 124 10ms 13 May 2022 453rd coreynash 566 146 10ms 19 Oct 2023 453rd alexsave 566 146 10ms 14 days ago 455th MeWhenI 🇻🇦 566 307 67ms 23 Jun 2024 456th alphafalfa 564 110 7ms 25 Oct 2024 457th Schmitt-Very-Cool 563 252 345ms 30 Sep 2025 458th emgordon154 563 376 1,681ms 17 Sep 2025 459th yzhs 🇩🇪 562 144 18ms 31 May 2022 460th Yewzir 🇧🇪 562 297 18ms 22 Dec 2024 461st GrayJoKing 🇦🇺 561 126 141ms 24 Oct 2024 461st rucin93 🇵🇱 561 126 133ms 3 Jan 2025 463rd SirBogman 🇺🇸 561 135 825ms 16 Jan 2024 464th bac0id 561 223 334ms 29 Jun 2024 465th the-zammers 560 222 141ms 15 Oct 2023 466th DialFrost 🇸🇬 558 143 230ms 16 Jun 2024 467th bac0id 558 191 104ms 29 Jun 2024 468th emgordon154 558 220 4ms 3 Jan 2025 469th MeWhenI 🇻🇦 555 141 245ms 23 Jun 2024 470th Command-Master 554 146 16ms 29 Sep 2023 471st 386asm 🇺🇸 554 214 45ms 4 May 2023 472nd SirBogman 🇺🇸 553 86 34ms 9 Jan 2023 473rd tatzyr 🇯🇵 553 94 38ms 24 Nov 2024 474th MeWhenI 🇻🇦 552 157 29ms 23 Jun 2024 475th Shanethegamer 🇺🇸 552 283 199ms 11 May 2022 476th lifthrasiir 🇰🇷 551 85 3ms 27 Nov 2024 477th bricknellj 550 147 11ms 24 Jun 2024 478th madeforlosers 548 151 9ms 23 Oct 2024 479th jacobly0 🇺🇸 548 192 5ms 13 Sep 2023 480th retrohun 547 148 11ms 21 May 2022 480th argusdusty 🇺🇸 547 148 16ms 21 Aug 2022 482nd bac0id 545 260 308ms 29 Jun 2024 483rd MeWhenI 🇻🇦 544 218 50ms 23 Jun 2024 484th levikeck 543 229 162ms 5 Feb 2024 485th DialFrost 🇸🇬 541 96 46ms 5 Jan 2023 485th olivermrose 🇺🇸 541 96 40ms 21 Jan 2023 485th olleicua 🇺🇸 541 96 37ms 15 Feb 2025 488th MeWhenI 🇻🇦 541 117 9ms 23 Jun 2024 489th weliveinhell 🇭🇹 540 199 2ms 21 May 2024 490th MeWhenI 🇻🇦 539 115 3ms 11 Nov 2022 491st stefangimmillaro 539 150 10ms 19 Sep 2023 491st stertooy 🇧🇪 539 150 29ms 15 Jun 2024 491st InigoK 🇺🇸 539 150 19ms 25 Aug 2025 491st blaztoma 🇱🇹 539 150 11ms 11 Oct 2025 495th KatieLG 🇬🇧 539 232 332ms 13 Oct 2024 496th Bubbler-4 538 87 17ms 9 May 2022 497th dokutan 538 219 265ms 24 Mar 2025 498th MeWhenI 🇻🇦 537 141 821ms 24 May 2024 499th sisyphus-ppcg 🇦🇺 536 97 40ms 27 Dec 2023 500th Yewzir 🇧🇪 536 191 2ms 7 May 2024 501st Alessandro-Balconi 🇮🇹 534 183 106ms 15 May 2023 502nd brimstonetrader 534 233 170ms 20 Mar 2024 503rd NewDefectus 🇮🇱 532 152 10ms 10 May 2022 503rd TaserTheFox 🇺🇸 532 152 17ms 26 May 2023 505th janbehrens 🇩🇪 529 153 29ms 17 Jun 2023 506th HumanoidCPU 529 248 325ms 8 Aug 2024 507th helbling 🇨🇭 527 157 13ms 3 Oct 2024 508th qpwoeirut 525 154 10ms 2 Oct 2025 508th CaedenHarper 🇨🇦 525 154 32ms 22 days ago 510th emgordon154 524 205 2ms 28 Dec 2024 511th janbehrens 🇩🇪 522 126 3ms 22 May 2022 512th CaedenHarper 🇨🇦 522 145 443ms 22 days ago 513th YAJUE114514 522 155 10ms 15 Aug 2025 514th emgordon154 521 71 60ms 22 Apr 2025 515th error256 521 215 80ms 21 May 2025 516th yzhs 🇩🇪 519 241 350ms 5 Jun 2022 517th The3gs 519 301 183ms 28 Nov 2024 518th Yewzir 🇧🇪 517 208 2ms 10 Jun 2024 519th alemelis 515 152 264ms 22 Sep 2024 520th CedricGebistorf 515 157 10ms 5 May 2023 521st msbranicky 515 199 2ms 13 Oct 2023 522nd Just4FunCoder 512 158 16ms 26 Mar 2023 523rd msbranicky 511 304 3ms 12 Aug 2023 524th guilhem-roy 🇫🇷 509 159 17ms 9 May 2022 524th OllieBoyne 🇬🇧 509 159 10ms 13 May 2022 First Prev 451–525 of 689 Next Last