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 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 albanian-laundromat 745 64 2ms 23 Nov 2025 562nd MeWhenI 🇻🇦 742 71 87ms 23 Nov 2025 562nd snoozingnewt 🇨🇦 742 71 91ms 24 days ago 564th emgordon154 741 138 455ms 24 Nov 2025 564th Shanethegamer 🇺🇸 741 138 432ms 18 days ago 566th blaztoma 🇱🇹 740 91 10ms 20 days ago 567th MeWhenI 🇻🇦 739 115 2ms 23 Nov 2025 568th iczelia 🇩🇪 737 60 9ms 20 days ago 569th HumanoidCPU 736 74 129ms 23 days ago 569th Ripick 736 74 137ms 22 days ago 571st HumanoidCPU 734 107 106ms 22 days ago 572nd KatieLG 🇬🇧 733 61 36ms 21 days ago 573rd albanian-laundromat 733 87 400ms 22 days ago 574th MeWhenI 🇻🇦 732 92 13ms 23 Nov 2025 575th vhoulbreque 🇫🇷 730 64 4ms 21 days ago 576th albanian-laundromat 730 101 149ms 23 Nov 2025 577th MeWhenI 🇻🇦 727 51 5ms 23 Nov 2025 578th dokutan 727 66 732ms 24 days ago 578th dokutan 727 66 253ms 21 days ago 580th albanian-laundromat 727 98 9ms 22 days ago 581st albanian-laundromat 726 75 128ms 27 days ago 582nd albanian-laundromat 725 61 9ms 24 Nov 2025 583rd Yewzir 🇧🇪 725 105 8ms 22 days ago 584th MeWhenI 🇻🇦 725 141 425ms 18 days ago 585th bitsandbeyond 🇳🇱 721 73 88ms 2 Nov 2025 586th GolfingSuccess 🇬🇷 720 99 8ms 5 Nov 2025 587th AlephSquirrel 719 85 4,383ms 21 days ago 588th HumanoidCPU 718 85 2ms 23 days ago 589th Yewzir 🇧🇪 717 94 11ms 22 days ago 590th albanian-laundromat 717 107 24ms 30 Oct 2025 590th HumanoidCPU 717 107 27ms 21 days ago 592nd rucin93 🇵🇱 714 68 2ms 30 Oct 2025 593rd emplv 🇱🇻 713 62 9ms 30 Oct 2025 594th YAJUE114514 713 94 110ms 12 days ago 595th MeWhenI 🇻🇦 713 98 42ms 24 Nov 2025 596th anter69 🇭🇺 710 63 33ms 16 days ago 597th CaedenHarper 🇨🇦 708 88 78ms 22 days ago 598th cros107 🇦🇺 704 70 11ms 11 Nov 2025 598th madex 🇩🇪 704 70 11ms 20 days ago 598th CutSandstone 704 70 11ms 18 days ago 598th Lv0Sys 🇵🇱 704 70 11ms 10 days ago 602nd BREMAUCY 🇫🇷 703 104 66ms 20 days ago 603rd bitsandbeyond 🇳🇱 703 121 2ms 1 Nov 2025 604th dokutan 701 72 5ms 24 days ago 605th aksyristos 701 87 2ms 19 days ago 606th Yewzir 🇧🇪 699 102 14ms 22 days ago 607th albanian-laundromat 696 111 2,451ms 23 Nov 2025 608th zgialor-lab 693 88 6ms 6 days ago 609th albanian-laundromat 692 86 99ms 23 Nov 2025 610th Lv0Sys 🇵🇱 691 64 10ms 10 days ago 611th HumanoidCPU 691 101 45ms 22 days ago 612th bitsandbeyond 🇳🇱 688 68 6ms 1 Nov 2025 613th albanian-laundromat 688 73 250ms 24 Nov 2025 614th GolfingSuccess 🇬🇷 687 98 8ms 22 days ago 615th BREMAUCY 🇫🇷 680 99 7ms 20 days ago 615th Schmitt-Very-Cool 680 99 8ms 16 days ago 617th HumanoidCPU 677 88 113ms 22 days ago 618th albanian-laundromat 677 99 117ms 30 Oct 2025 619th Yewzir 🇧🇪 676 122 264ms 22 days ago 620th ahmetdemirag 🇨🇾 675 73 12ms 24 days ago 620th SirBogman 🇺🇸 675 73 13ms 21 days ago 622nd CaedenHarper 🇨🇦 671 117 116ms 22 days ago 623rd duckyluuk 🇳🇱 670 66 10ms 30 Oct 2025 623rd helbling 🇨🇭 670 66 10ms 9 days ago 625th Shanethegamer 🇺🇸 670 93 78ms 2 Nov 2025 626th TheZwierzLF 🇵🇱 669 71 464ms 10 days ago 627th Jacob385 669 105 361ms 10 Nov 2025 628th Babafaba 666 74 11ms 21 Nov 2025 628th TheZwierzLF 🇵🇱 666 74 13ms 23 days ago 628th BREMAUCY 🇫🇷 666 74 12ms 22 days ago 628th btjones0 666 74 11ms 21 days ago 628th RandGuy 666 74 11ms 20 days ago 628th annaproxy 666 74 13ms 20 days ago 628th aksyristos 666 74 11ms 19 days ago 628th hippalectryon-0 666 74 11ms 15 days ago 636th Yewzir 🇧🇪 664 92 3,884ms 22 days ago 637th Yewzir 🇧🇪 662 116 27ms 22 days ago 638th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 639th bitsandbeyond 🇳🇱 660 119 111ms 31 Oct 2025 640th CaedenHarper 🇨🇦 660 157 2,347ms 22 days ago First Prev 561–640 of 1,104 Next Last