The Calendar hole will go live in approximately 8 hours. 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 631st hippalectryon-0 679 74 11ms 24 days ago 631st SB-945 679 74 12ms 12 days ago 631st te-chnical 679 74 12ms 8 days ago 644th CaedenHarper 🇨🇦 679 117 116ms 30 Nov 2025 645th HumanoidCPU 677 88 111ms 30 Nov 2025 646th bitsandbeyond 🇳🇱 677 94 10ms 32 mins ago 647th albanian-laundromat 677 99 117ms 30 Oct 2025 648th Yewzir 🇧🇪 677 122 264ms 30 Nov 2025 649th Yewzir 🇧🇪 675 73 493ms 30 Nov 2025 650th duckyluuk 🇳🇱 670 66 10ms 30 Oct 2025 650th helbling 🇨🇭 670 66 10ms 18 days ago 652nd Jacob385 669 105 361ms 10 Nov 2025 653rd bitsandbeyond 🇳🇱 667 119 111ms 31 Oct 2025 654th BREMAUCY 🇫🇷 666 74 501ms 1 Dec 2025 655th Yewzir 🇧🇪 665 92 2,990ms 30 Nov 2025 656th Yewzir 🇧🇪 662 116 27ms 30 Nov 2025 657th Ripick 661 76 12ms 14 Nov 2025 657th LostSyntax21 🇬🇧 661 76 11ms 30 Nov 2025 657th scpchicken 🇵🇼 661 76 11ms 26 days ago 660th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 661st CaedenHarper 🇨🇦 660 157 2,347ms 30 Nov 2025 662nd msbranicky 658 93 2,878ms 27 days ago 663rd Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 664th bitsandbeyond 🇳🇱 655 75 94ms 5 Nov 2025 665th mousetail 🇳🇱 652 77 11ms 23 Nov 2025 666th JOrE20 🇺🇸 651 68 10ms 2 days ago 667th GolfingSuccess 🇬🇷 651 157 447ms 24 days ago 668th AutumnWind75 649 119 385ms 21 days ago 669th Bmrl7 644 78 11ms 11 days ago 670th AlephSquirrel 641 105 8ms 30 Nov 2025 671st HumanoidCPU 637 111 110ms 30 Nov 2025 672nd msbranicky 636 79 11ms 26 Nov 2025 672nd nemoyatpeace 636 79 16ms 3 days ago 674th GolfingSuccess 🇬🇷 635 72 1ms 30 Oct 2025 675th dokutan 635 163 1,613ms 25 days ago 676th HumanoidCPU 634 122 58ms 29 Nov 2025 677th HumanoidCPU 633 111 370ms 29 Nov 2025 678th BREMAUCY 🇫🇷 631 97 3,199ms 3 Dec 2025 679th msbranicky 631 131 269ms 27 days ago 680th stackofbears 629 62 39ms 8 days ago 681st prestosilver 🇺🇸 629 97 2ms 3 Dec 2025 682nd aksyristos 628 123 54ms 27 days ago 683rd rucin93 🇵🇱 625 64 51ms 30 Oct 2025 684th msbranicky 624 79 470ms 27 days ago 685th msbranicky 624 108 8ms 27 days ago 686th alexsave 623 71 9ms 30 Nov 2025 687th HumanoidCPU 620 85 90ms 29 Nov 2025 688th HumanoidCPU 620 105 111ms 29 Nov 2025 689th albanian-laundromat 617 99 2ms 30 Nov 2025 690th MeWhenI 🇻🇦 616 76 5ms 23 Nov 2025 691st IISResetMe 616 78 273ms 30 Nov 2025 692nd albanian-laundromat 616 82 4ms 25 Nov 2025 693rd MeWhenI 🇻🇦 615 104 17ms 23 Nov 2025 694th HumanoidCPU 614 72 9ms 29 Nov 2025 694th olleicua 🇺🇸 614 72 10ms 23 days ago 696th themoonisacheese 613 82 11ms 22 days ago 697th JOrE20 🇺🇸 613 102 43ms 28 Nov 2025 698th tomh1012 613 104 415ms 1 Dec 2025 699th Waffle3z 609 87 2ms 4 days ago 700th HumanoidCPU 609 121 407ms 30 Nov 2025 701st AlephSquirrel 608 79 248ms 30 Nov 2025 702nd HumanoidCPU 608 105 404ms 29 Nov 2025 703rd anter69 🇭🇺 605 74 36ms 25 days ago 703rd D-MOVE 🇵🇭 605 74 39ms 22 days ago 705th RDShah 605 83 11ms 1 Dec 2025 706th MeWhenI 🇻🇦 605 100 6ms 24 Nov 2025 707th MeWhenI 🇻🇦 604 111 125ms 24 Nov 2025 708th Schmitt-Very-Cool 600 127 10ms 25 days ago 709th HumanoidCPU 599 74 130ms 29 Nov 2025 710th CaedenHarper 🇨🇦 599 88 107ms 30 Nov 2025 711th Nicronmil 598 74 9ms 20 days ago 711th two-bad 🇬🇧 598 74 10ms 13 days ago 713th CatsAreFluffy 597 67 51ms 30 Oct 2025 714th olleicua 🇺🇸 597 75 36ms 23 days ago 715th anter69 🇭🇺 597 77 809ms 25 days ago 716th HumanoidCPU 595 107 9ms 29 Nov 2025 717th Natanaelel 🇸🇪 595 139 263ms 6 days ago 718th CaedenHarper 🇨🇦 593 81 240ms 30 Nov 2025 719th zgialor-lab 591 85 28ms 14 days ago 720th KatieLG 🇬🇧 589 108 8ms 30 Nov 2025 First Prev 641–720 of 1,136 Next Last