The Calendar hole will go live in approximately 11 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 🇻🇦 727 51 5ms 26 days ago 562nd dokutan 727 66 732ms 21 days ago 562nd dokutan 727 66 253ms 18 days ago 564th albanian-laundromat 727 98 9ms 19 days ago 565th Yewzir 🇧🇪 725 105 8ms 19 days ago 566th MeWhenI 🇻🇦 725 141 425ms 16 days ago 567th albanian-laundromat 724 61 9ms 26 days ago 568th bitsandbeyond 🇳🇱 721 73 88ms 2 Nov 2025 569th GolfingSuccess 🇬🇷 720 99 8ms 5 Nov 2025 570th AlephSquirrel 718 85 4,383ms 19 days ago 571st dokutan 718 163 1,613ms 14 days ago 572nd HumanoidCPU 717 85 2ms 21 days ago 573rd Yewzir 🇧🇪 717 94 11ms 19 days ago 574th albanian-laundromat 717 107 24ms 30 Oct 2025 574th HumanoidCPU 717 107 27ms 18 days ago 576th rucin93 🇵🇱 714 68 2ms 30 Oct 2025 577th emplv 🇱🇻 713 62 9ms 30 Oct 2025 578th YAJUE114514 713 94 110ms 9 days ago 579th MeWhenI 🇻🇦 713 98 42ms 26 days ago 580th anter69 🇭🇺 710 63 33ms 14 days ago 581st CaedenHarper 🇨🇦 708 88 78ms 20 days ago 582nd cros107 🇦🇺 704 70 11ms 11 Nov 2025 582nd madex 🇩🇪 704 70 11ms 18 days ago 582nd CutSandstone 704 70 11ms 16 days ago 582nd Lv0Sys 🇵🇱 704 70 11ms 7 days ago 586th BREMAUCY 🇫🇷 703 104 66ms 17 days ago 587th bitsandbeyond 🇳🇱 703 121 2ms 1 Nov 2025 588th dokutan 701 72 5ms 21 days ago 589th aksyristos 700 87 2ms 16 days ago 590th Yewzir 🇧🇪 699 102 14ms 19 days ago 591st albanian-laundromat 695 111 2,451ms 27 days ago 592nd zgialor-lab 692 88 6ms 3 days ago 593rd Lv0Sys 🇵🇱 691 64 10ms 7 days ago 594th albanian-laundromat 691 86 99ms 26 days ago 595th HumanoidCPU 691 101 45ms 19 days ago 596th bitsandbeyond 🇳🇱 688 68 6ms 1 Nov 2025 597th albanian-laundromat 687 73 250ms 26 days ago 598th GolfingSuccess 🇬🇷 687 98 8ms 19 days ago 599th BREMAUCY 🇫🇷 680 99 7ms 17 days ago 599th Schmitt-Very-Cool 680 99 8ms 14 days ago 601st albanian-laundromat 677 99 117ms 30 Oct 2025 602nd MeWhenI 🇻🇦 677 104 17ms 26 days ago 603rd bitsandbeyond 🇳🇱 676 75 94ms 5 Nov 2025 604th Yewzir 🇧🇪 676 122 264ms 19 days ago 605th ahmetdemirag 🇨🇾 675 73 12ms 21 days ago 605th SirBogman 🇺🇸 675 73 13ms 18 days ago 607th HumanoidCPU 675 88 113ms 20 days ago 608th CaedenHarper 🇨🇦 671 117 116ms 20 days ago 609th duckyluuk 🇳🇱 670 66 10ms 30 Oct 2025 609th helbling 🇨🇭 670 66 10ms 7 days ago 611th Shanethegamer 🇺🇸 670 93 78ms 2 Nov 2025 612th TheZwierzLF 🇵🇱 669 71 464ms 7 days ago 613th Jacob385 669 105 361ms 10 Nov 2025 614th Babafaba 666 74 11ms 21 Nov 2025 614th TheZwierzLF 🇵🇱 666 74 13ms 20 days ago 614th BREMAUCY 🇫🇷 666 74 12ms 19 days ago 614th btjones0 666 74 11ms 19 days ago 614th RandGuy 666 74 11ms 17 days ago 614th annaproxy 666 74 13ms 17 days ago 614th aksyristos 666 74 11ms 16 days ago 614th hippalectryon-0 666 74 11ms 13 days ago 622nd Yewzir 🇧🇪 664 92 3,884ms 19 days ago 623rd Yewzir 🇧🇪 662 116 27ms 19 days ago 624th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 625th bitsandbeyond 🇳🇱 660 119 111ms 31 Oct 2025 626th LostSyntax21 🇬🇧 657 75 20ms 19 days ago 627th Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 628th msbranicky 656 93 3,741ms 16 days ago 629th MeWhenI 🇻🇦 656 95 78ms 27 days ago 630th GolfingSuccess 🇬🇷 651 157 450ms 13 days ago 631st albanian-laundromat 650 91 4ms 26 days ago 632nd bitsandbeyond 🇳🇱 650 98 9ms 16 Nov 2025 633rd Ripick 648 76 12ms 14 Nov 2025 633rd scpchicken 🇵🇼 648 76 11ms 15 days ago 635th AutumnWind75 648 119 385ms 9 days ago 636th HumanoidCPU 647 181 2,256ms 20 days ago 637th BREMAUCY 🇫🇷 641 74 454ms 18 days ago 638th AlephSquirrel 641 105 8ms 19 days ago 639th mousetail 🇳🇱 640 77 11ms 26 days ago 640th GolfingSuccess 🇬🇷 635 72 1ms 30 Oct 2025 First Prev 561–640 of 1,081 Next Last