The Calendar hole will go live in approximately 9 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 641st Yewzir 🇧🇪 662 116 27ms 22 days ago 642nd Ripick 661 76 12ms 14 Nov 2025 642nd LostSyntax21 🇬🇧 661 76 11ms 21 days ago 642nd scpchicken 🇵🇼 661 76 11ms 17 days ago 645th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 646th CaedenHarper 🇨🇦 660 157 2,347ms 22 days ago 647th msbranicky 657 93 3,741ms 18 days ago 648th Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 649th bitsandbeyond 🇳🇱 655 75 94ms 5 Nov 2025 650th mousetail 🇳🇱 652 77 11ms 23 Nov 2025 651st GolfingSuccess 🇬🇷 651 157 450ms 15 days ago 652nd bitsandbeyond 🇳🇱 650 98 9ms 16 Nov 2025 653rd AutumnWind75 649 119 385ms 12 days ago 654th Bmrl7 644 78 11ms 2 days ago 655th AlephSquirrel 641 105 8ms 21 days ago 656th HumanoidCPU 637 111 110ms 22 days ago 657th msbranicky 636 79 11ms 26 days ago 658th GolfingSuccess 🇬🇷 635 72 1ms 30 Oct 2025 659th dokutan 635 163 1,613ms 16 days ago 660th HumanoidCPU 633 111 370ms 23 days ago 661st HumanoidCPU 633 122 72ms 23 days ago 662nd JOrE20 🇺🇸 632 70 8ms 24 days ago 663rd BREMAUCY 🇫🇷 630 97 4,001ms 19 days ago 664th msbranicky 630 131 269ms 18 days ago 665th prestosilver 🇺🇸 629 97 2ms 19 days ago 666th aksyristos 628 123 56ms 18 days ago 667th rucin93 🇵🇱 625 64 51ms 30 Oct 2025 668th msbranicky 624 108 8ms 18 days ago 669th alexsave 623 71 9ms 22 days ago 670th msbranicky 623 79 448ms 18 days ago 671st HumanoidCPU 620 85 90ms 23 days ago 672nd HumanoidCPU 620 105 111ms 23 days ago 673rd albanian-laundromat 616 82 5ms 26 days ago 674th albanian-laundromat 616 99 2ms 22 days ago 675th MeWhenI 🇻🇦 615 76 7ms 23 Nov 2025 676th IISResetMe 615 78 278ms 22 days ago 677th MeWhenI 🇻🇦 615 104 17ms 23 Nov 2025 678th HumanoidCPU 614 72 9ms 23 days ago 678th olleicua 🇺🇸 614 72 10ms 14 days ago 680th JOrE20 🇺🇸 613 102 43ms 24 days ago 681st tomh1012 613 104 415ms 21 days ago 682nd themoonisacheese 612 82 11ms 13 days ago 683rd HumanoidCPU 609 121 407ms 22 days ago 684th HumanoidCPU 608 105 404ms 23 days ago 685th AlephSquirrel 607 79 271ms 21 days ago 686th RDShah 605 83 11ms 20 days ago 687th MeWhenI 🇻🇦 605 100 6ms 24 Nov 2025 688th anter69 🇭🇺 604 74 33ms 16 days ago 688th D-MOVE 🇵🇭 604 74 46ms 13 days ago 690th MeWhenI 🇻🇦 604 111 125ms 24 Nov 2025 691st Schmitt-Very-Cool 600 127 10ms 16 days ago 692nd HumanoidCPU 599 74 130ms 23 days ago 693rd CaedenHarper 🇨🇦 599 88 107ms 22 days ago 694th CatsAreFluffy 597 67 51ms 30 Oct 2025 695th Nicronmil 597 74 9ms 11 days ago 695th two-bad 🇬🇧 597 74 10ms 5 days ago 697th anter69 🇭🇺 597 77 809ms 16 days ago 698th olleicua 🇺🇸 596 75 54ms 14 days ago 699th MeWhenI 🇻🇦 595 74 100ms 24 Nov 2025 700th HumanoidCPU 595 107 9ms 23 days ago 701st CaedenHarper 🇨🇦 592 81 240ms 22 days ago 702nd zgialor-lab 591 85 28ms 5 days ago 703rd KatieLG 🇬🇧 589 108 8ms 21 days ago 704th Yewzir 🇧🇪 585 82 285ms 22 days ago 705th aksyristos 585 83 2ms 19 days ago 706th BREMAUCY 🇫🇷 585 109 461ms 21 days ago 707th BREMAUCY 🇫🇷 585 141 260ms 20 days ago 708th Schmitt-Very-Cool 584 86 10ms 17 days ago 709th dokutan 582 73 228ms 24 days ago 710th Protothor 582 76 9ms 18 days ago 711th SwordF-Official 575 92 2ms 16 Nov 2025 711th HumanoidCPU 575 92 2ms 23 days ago 713th Maashau 575 106 2ms 21 days ago 714th BREMAUCY 🇫🇷 573 78 38ms 21 days ago 715th MeWhenI 🇻🇦 573 111 16ms 24 days ago 716th HumanoidCPU 572 181 2,256ms 22 days ago 717th Schmitt-Very-Cool 571 128 69ms 16 days ago 718th bitsandbeyond 🇳🇱 563 71 51ms 7 Nov 2025 719th albanian-laundromat 563 104 1,258ms 30 Oct 2025 720th CaedenHarper 🇨🇦 557 121 10ms 22 days ago First Prev 641–720 of 1,115 Next Last