The Calendar hole will go live in approximately 5 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 bitsandbeyond 🇳🇱 748 90 10ms 31 Oct 2025 562nd HumanoidCPU 747 102 8ms 26 days ago 562nd bitsandbeyond 🇳🇱 747 102 9ms 26 days ago 564th MeWhenI 🇻🇦 745 57 299ms 24 Nov 2025 564th CaedenHarper 🇨🇦 745 57 200ms 26 days ago 564th bitsandbeyond 🇳🇱 745 57 203ms 26 days ago 567th albanian-laundromat 745 64 2ms 23 Nov 2025 568th MeWhenI 🇻🇦 742 71 87ms 23 Nov 2025 568th snoozingnewt 🇨🇦 742 71 91ms 27 days ago 570th emgordon154 741 138 455ms 24 Nov 2025 570th Shanethegamer 🇺🇸 741 138 432ms 22 days ago 572nd blaztoma 🇱🇹 740 91 10ms 24 days ago 573rd MeWhenI 🇻🇦 739 115 2ms 23 Nov 2025 574th iczelia 🇩🇪 737 60 9ms 24 days ago 575th HumanoidCPU 736 74 129ms 27 days ago 575th Ripick 736 74 137ms 26 days ago 577th HumanoidCPU 734 107 106ms 26 days ago 578th KatieLG 🇬🇧 733 61 35ms 25 days ago 579th albanian-laundromat 733 87 400ms 25 days ago 580th MeWhenI 🇻🇦 732 92 13ms 23 Nov 2025 581st vhoulbreque 🇫🇷 730 64 4ms 25 days ago 582nd albanian-laundromat 730 101 149ms 23 Nov 2025 583rd MeWhenI 🇻🇦 727 51 5ms 23 Nov 2025 584th dokutan 727 66 732ms 28 Nov 2025 584th dokutan 727 66 253ms 25 days ago 586th albanian-laundromat 727 98 9ms 25 days ago 587th albanian-laundromat 726 75 128ms 25 Nov 2025 588th albanian-laundromat 725 61 9ms 24 Nov 2025 589th Yewzir 🇧🇪 725 105 8ms 26 days ago 590th MeWhenI 🇻🇦 725 141 425ms 22 days ago 591st bitsandbeyond 🇳🇱 721 73 88ms 2 Nov 2025 592nd AlephSquirrel 720 85 3,030ms 25 days ago 593rd GolfingSuccess 🇬🇷 720 99 8ms 5 Nov 2025 594th HumanoidCPU 718 85 2ms 27 days ago 595th albanian-laundromat 718 107 24ms 30 Oct 2025 595th HumanoidCPU 718 107 27ms 25 days ago 595th Natanaelel 🇸🇪 718 107 24ms 27 hours ago 598th Yewzir 🇧🇪 717 94 11ms 26 days ago 599th rucin93 🇵🇱 714 68 2ms 30 Oct 2025 600th emplv 🇱🇻 713 62 9ms 30 Oct 2025 601st YAJUE114514 713 94 110ms 16 days ago 602nd MeWhenI 🇻🇦 713 98 42ms 24 Nov 2025 603rd anter69 🇭🇺 710 63 40ms 20 days ago 604th CaedenHarper 🇨🇦 708 88 78ms 26 days ago 605th cros107 🇦🇺 704 70 11ms 11 Nov 2025 605th madex 🇩🇪 704 70 11ms 24 days ago 605th CutSandstone 704 70 11ms 22 days ago 608th BREMAUCY 🇫🇷 703 104 66ms 24 days ago 609th bitsandbeyond 🇳🇱 703 121 2ms 1 Nov 2025 610th dokutan 701 72 5ms 28 Nov 2025 611th aksyristos 701 87 2ms 23 days ago 612th Yewzir 🇧🇪 699 102 10ms 26 days ago 613th albanian-laundromat 696 111 2,079ms 23 Nov 2025 614th zgialor-lab 693 88 2ms 9 days ago 615th albanian-laundromat 692 86 99ms 23 Nov 2025 616th Lv0Sys 🇵🇱 691 64 10ms 13 days ago 617th HumanoidCPU 691 101 45ms 26 days ago 618th bitsandbeyond 🇳🇱 688 68 4ms 1 Nov 2025 619th albanian-laundromat 688 73 250ms 24 Nov 2025 620th GolfingSuccess 🇬🇷 687 98 8ms 26 days ago 621st BREMAUCY 🇫🇷 680 99 7ms 24 days ago 621st Schmitt-Very-Cool 680 99 8ms 20 days ago 623rd HumanoidCPU 677 88 111ms 26 days ago 624th albanian-laundromat 677 99 117ms 30 Oct 2025 625th Yewzir 🇧🇪 677 122 264ms 26 days ago 626th ahmetdemirag 🇨🇾 675 73 12ms 27 days ago 626th SirBogman 🇺🇸 675 73 13ms 24 days ago 628th CaedenHarper 🇨🇦 671 117 116ms 26 days ago 629th duckyluuk 🇳🇱 670 66 10ms 30 Oct 2025 629th helbling 🇨🇭 670 66 10ms 13 days ago 631st Shanethegamer 🇺🇸 670 93 78ms 2 Nov 2025 632nd TheZwierzLF 🇵🇱 669 71 464ms 14 days ago 633rd Jacob385 669 105 361ms 10 Nov 2025 634th Babafaba 666 74 11ms 21 Nov 2025 634th TheZwierzLF 🇵🇱 666 74 13ms 26 days ago 634th BREMAUCY 🇫🇷 666 74 12ms 26 days ago 634th btjones0 666 74 11ms 25 days ago 634th RandGuy 666 74 11ms 24 days ago 634th annaproxy 666 74 13ms 24 days ago 634th aksyristos 666 74 11ms 23 days ago First Prev 561–640 of 1,115 Next Last