The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Tower of Hanoi in all languages in bytes. 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 Tower of Hanoi 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers 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 Tower of Hanoi 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 561st HumanoidCPU 717 85 2ms 19 days ago 562nd Yewzir 🇧🇪 717 94 11ms 18 days ago 563rd albanian-laundromat 717 107 24ms 30 Oct 2025 563rd HumanoidCPU 717 107 27ms 17 days ago 565th rucin93 🇵🇱 714 68 2ms 30 Oct 2025 566th emplv 🇱🇻 713 62 9ms 30 Oct 2025 567th MeWhenI 🇻🇦 713 98 42ms 24 days ago 568th YAJUE114514 711 94 110ms 8 days ago 569th BREMAUCY 🇫🇷 703 104 66ms 16 days ago 570th bitsandbeyond 🇳🇱 703 121 2ms 1 Nov 2025 571st dokutan 701 72 5ms 20 days ago 572nd aksyristos 700 87 2ms 15 days ago 573rd Yewzir 🇧🇪 699 102 14ms 18 days ago 574th albanian-laundromat 696 91 4ms 24 days ago 575th albanian-laundromat 695 111 2,451ms 25 days ago 576th TheZwierzLF 🇵🇱 692 71 464ms 6 days ago 577th zgialor-lab 692 88 6ms 47 hours ago 578th albanian-laundromat 691 86 99ms 25 days ago 579th HumanoidCPU 691 101 45ms 18 days ago 580th Lv0Sys 🇵🇱 690 64 10ms 6 days ago 581st bitsandbeyond 🇳🇱 688 68 6ms 1 Nov 2025 582nd anter69 🇭🇺 687 73 12ms 10 Nov 2025 582nd albanian-laundromat 687 73 250ms 24 days ago 582nd ahmetdemirag 🇨🇾 687 73 12ms 20 days ago 582nd Yewzir 🇧🇪 687 73 12ms 18 days ago 582nd SirBogman 🇺🇸 687 73 13ms 17 days ago 587th GolfingSuccess 🇬🇷 687 98 8ms 18 days ago 588th HumanoidCPU 683 72 438ms 19 days ago 589th Yewzir 🇧🇪 682 122 264ms 18 days ago 590th BREMAUCY 🇫🇷 680 99 7ms 16 days ago 590th Schmitt-Very-Cool 680 99 8ms 12 days ago 592nd CaedenHarper 🇨🇦 679 117 116ms 18 days ago 593rd Babafaba 678 74 11ms 27 days ago 593rd JOrE20 🇺🇸 678 74 11ms 27 days ago 593rd HumanoidCPU 678 74 11ms 19 days ago 593rd TheZwierzLF 🇵🇱 678 74 13ms 18 days ago 593rd BREMAUCY 🇫🇷 678 74 12ms 18 days ago 593rd plcc0 678 74 12ms 18 days ago 593rd btjones0 678 74 11ms 17 days ago 593rd RandGuy 678 74 11ms 16 days ago 593rd annaproxy 678 74 13ms 16 days ago 593rd aksyristos 678 74 11ms 15 days ago 593rd hippalectryon-0 678 74 11ms 11 days ago 604th bitsandbeyond 🇳🇱 676 75 94ms 5 Nov 2025 605th albanian-laundromat 676 99 117ms 30 Oct 2025 606th HumanoidCPU 675 88 113ms 18 days ago 607th Yewzir 🇧🇪 673 73 505ms 18 days ago 608th duckyluuk 🇳🇱 669 66 10ms 30 Oct 2025 608th helbling 🇨🇭 669 66 10ms 5 days ago 610th Jacob385 669 105 361ms 10 Nov 2025 611th bitsandbeyond 🇳🇱 667 119 111ms 31 Oct 2025 612th BREMAUCY 🇫🇷 664 74 454ms 17 days ago 613th Yewzir 🇧🇪 664 92 3,884ms 18 days ago 614th Yewzir 🇧🇪 662 116 27ms 18 days ago 615th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 616th Ripick 660 76 12ms 14 Nov 2025 616th LostSyntax21 🇬🇧 660 76 11ms 17 days ago 616th scpchicken 🇵🇼 660 76 11ms 13 days ago 619th msbranicky 656 93 3,741ms 14 days ago 620th Shanethegamer 🇺🇸 656 102 116ms 2 Nov 2025 621st mousetail 🇳🇱 652 77 11ms 25 days ago 622nd GolfingSuccess 🇬🇷 651 157 450ms 11 days ago 623rd bitsandbeyond 🇳🇱 650 98 9ms 16 Nov 2025 624th AutumnWind75 648 119 385ms 8 days ago 625th HumanoidCPU 647 181 2,256ms 18 days ago 626th AlephSquirrel 641 105 8ms 17 days ago 627th HumanoidCPU 637 111 110ms 18 days ago 628th GolfingSuccess 🇬🇷 635 72 1ms 30 Oct 2025 629th msbranicky 635 79 11ms 22 days ago 630th msbranicky 635 131 269ms 14 days ago 631st HumanoidCPU 632 111 370ms 19 days ago 632nd HumanoidCPU 632 122 72ms 19 days ago 633rd JOrE20 🇺🇸 631 70 8ms 20 days ago 634th BREMAUCY 🇫🇷 629 97 4,001ms 15 days ago 635th prestosilver 🇺🇸 628 97 2ms 15 days ago 636th aksyristos 627 123 56ms 15 days ago 637th rucin93 🇵🇱 625 64 51ms 30 Oct 2025 638th msbranicky 624 108 8ms 14 days ago 639th alexsave 622 71 9ms 18 days ago 640th msbranicky 622 79 448ms 14 days ago First Prev 561–640 of 1,080 Next Last