The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Tower of Hanoi 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 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 Chars Time Submitted 561st MeWhenI 🇻🇦 742 71 87ms 23 Nov 2025 561st snoozingnewt 🇨🇦 742 71 91ms 22 days ago 563rd emgordon154 741 138 455ms 27 days ago 563rd Shanethegamer 🇺🇸 741 138 432ms 17 days ago 565th blaztoma 🇱🇹 740 91 10ms 19 days ago 566th MeWhenI 🇻🇦 739 115 2ms 23 Nov 2025 567th iczelia 🇩🇪 737 60 9ms 19 days ago 568th HumanoidCPU 734 107 106ms 21 days ago 569th KatieLG 🇬🇧 733 61 36ms 20 days ago 570th albanian-laundromat 733 87 400ms 20 days ago 571st MeWhenI 🇻🇦 732 92 13ms 23 Nov 2025 572nd vhoulbreque 🇫🇷 730 64 4ms 20 days ago 573rd albanian-laundromat 730 101 149ms 23 Nov 2025 574th MeWhenI 🇻🇦 727 51 5ms 23 Nov 2025 575th dokutan 727 66 732ms 22 days ago 575th dokutan 727 66 253ms 19 days ago 577th albanian-laundromat 727 98 9ms 20 days ago 578th albanian-laundromat 725 61 9ms 27 days ago 579th Yewzir 🇧🇪 725 105 8ms 21 days ago 580th MeWhenI 🇻🇦 725 141 425ms 17 days ago 581st bitsandbeyond 🇳🇱 721 73 88ms 2 Nov 2025 582nd GolfingSuccess 🇬🇷 720 99 8ms 5 Nov 2025 583rd AlephSquirrel 719 85 4,383ms 20 days ago 584th HumanoidCPU 718 85 2ms 22 days ago 585th Yewzir 🇧🇪 717 94 11ms 21 days ago 586th albanian-laundromat 717 107 24ms 30 Oct 2025 586th HumanoidCPU 717 107 27ms 20 days ago 588th rucin93 🇵🇱 714 68 2ms 30 Oct 2025 589th emplv 🇱🇻 713 62 9ms 30 Oct 2025 590th YAJUE114514 713 94 110ms 11 days ago 591st MeWhenI 🇻🇦 713 98 42ms 27 days ago 592nd anter69 🇭🇺 710 63 33ms 15 days ago 593rd CaedenHarper 🇨🇦 708 88 78ms 21 days ago 594th cros107 🇦🇺 704 70 11ms 11 Nov 2025 594th madex 🇩🇪 704 70 11ms 19 days ago 594th CutSandstone 704 70 11ms 17 days ago 594th Lv0Sys 🇵🇱 704 70 11ms 8 days ago 598th BREMAUCY 🇫🇷 703 104 66ms 19 days ago 599th bitsandbeyond 🇳🇱 703 121 2ms 1 Nov 2025 600th dokutan 701 72 5ms 22 days ago 601st aksyristos 701 87 2ms 18 days ago 602nd Yewzir 🇧🇪 699 102 14ms 21 days ago 603rd albanian-laundromat 696 111 2,451ms 23 Nov 2025 604th zgialor-lab 693 88 6ms 4 days ago 605th albanian-laundromat 692 86 99ms 23 Nov 2025 606th Lv0Sys 🇵🇱 691 64 10ms 8 days ago 607th HumanoidCPU 691 101 45ms 21 days ago 608th bitsandbeyond 🇳🇱 688 68 6ms 1 Nov 2025 609th albanian-laundromat 687 73 250ms 27 days ago 610th GolfingSuccess 🇬🇷 687 98 8ms 21 days ago 611th BREMAUCY 🇫🇷 680 99 7ms 19 days ago 611th Schmitt-Very-Cool 680 99 8ms 15 days ago 613th HumanoidCPU 677 88 113ms 21 days ago 614th albanian-laundromat 677 99 117ms 30 Oct 2025 615th Yewzir 🇧🇪 676 122 264ms 21 days ago 616th ahmetdemirag 🇨🇾 675 73 12ms 22 days ago 616th SirBogman 🇺🇸 675 73 13ms 19 days ago 618th CaedenHarper 🇨🇦 671 117 116ms 21 days ago 619th duckyluuk 🇳🇱 670 66 10ms 30 Oct 2025 619th helbling 🇨🇭 670 66 10ms 8 days ago 621st Shanethegamer 🇺🇸 670 93 78ms 2 Nov 2025 622nd TheZwierzLF 🇵🇱 669 71 464ms 9 days ago 623rd Jacob385 669 105 361ms 10 Nov 2025 624th Babafaba 666 74 11ms 21 Nov 2025 624th TheZwierzLF 🇵🇱 666 74 13ms 21 days ago 624th BREMAUCY 🇫🇷 666 74 12ms 21 days ago 624th btjones0 666 74 11ms 20 days ago 624th RandGuy 666 74 11ms 19 days ago 624th annaproxy 666 74 13ms 19 days ago 624th aksyristos 666 74 11ms 18 days ago 624th hippalectryon-0 666 74 11ms 14 days ago 632nd Yewzir 🇧🇪 664 92 3,884ms 21 days ago 633rd Yewzir 🇧🇪 662 116 27ms 21 days ago 634th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 635th bitsandbeyond 🇳🇱 660 119 111ms 31 Oct 2025 636th CaedenHarper 🇨🇦 660 157 2,347ms 21 days ago 637th LostSyntax21 🇬🇧 657 75 20ms 20 days ago 638th msbranicky 657 93 3,741ms 17 days ago 639th Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 640th MeWhenI 🇻🇦 656 95 78ms 23 Nov 2025 First Prev 561–640 of 1,098 Next Last