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 KatieLG 🇬🇧 733 61 36ms 19 days ago 562nd albanian-laundromat 733 87 400ms 20 days ago 563rd MeWhenI 🇻🇦 732 92 13ms 27 days ago 564th vhoulbreque 🇫🇷 730 64 4ms 19 days ago 565th albanian-laundromat 728 101 149ms 27 days ago 566th MeWhenI 🇻🇦 727 51 5ms 27 days ago 567th dokutan 727 66 732ms 22 days ago 567th dokutan 727 66 253ms 19 days ago 569th albanian-laundromat 727 98 9ms 20 days ago 570th Yewzir 🇧🇪 725 105 8ms 20 days ago 571st MeWhenI 🇻🇦 725 141 425ms 17 days ago 572nd albanian-laundromat 724 61 9ms 26 days ago 573rd bitsandbeyond 🇳🇱 721 73 88ms 2 Nov 2025 574th GolfingSuccess 🇬🇷 720 99 8ms 5 Nov 2025 575th AlephSquirrel 718 85 4,383ms 20 days ago 576th dokutan 718 163 1,613ms 14 days ago 577th HumanoidCPU 717 85 2ms 21 days ago 578th Yewzir 🇧🇪 717 94 11ms 20 days ago 579th albanian-laundromat 717 107 24ms 30 Oct 2025 579th HumanoidCPU 717 107 27ms 19 days ago 581st rucin93 🇵🇱 714 68 2ms 30 Oct 2025 582nd emplv 🇱🇻 713 62 9ms 30 Oct 2025 583rd YAJUE114514 713 94 110ms 10 days ago 584th MeWhenI 🇻🇦 713 98 42ms 26 days ago 585th anter69 🇭🇺 710 63 33ms 14 days ago 586th CaedenHarper 🇨🇦 708 88 78ms 20 days ago 587th cros107 🇦🇺 704 70 11ms 11 Nov 2025 587th madex 🇩🇪 704 70 11ms 18 days ago 587th CutSandstone 704 70 11ms 16 days ago 587th Lv0Sys 🇵🇱 704 70 11ms 8 days ago 591st BREMAUCY 🇫🇷 703 104 66ms 18 days ago 592nd bitsandbeyond 🇳🇱 703 121 2ms 1 Nov 2025 593rd dokutan 701 72 5ms 22 days ago 594th aksyristos 701 87 2ms 17 days ago 595th Yewzir 🇧🇪 699 102 14ms 20 days ago 596th albanian-laundromat 695 111 2,451ms 27 days ago 597th zgialor-lab 693 88 6ms 4 days ago 598th Lv0Sys 🇵🇱 691 64 10ms 8 days ago 599th albanian-laundromat 691 86 99ms 27 days ago 600th HumanoidCPU 691 101 45ms 20 days ago 601st bitsandbeyond 🇳🇱 688 68 6ms 1 Nov 2025 602nd albanian-laundromat 687 73 250ms 26 days ago 603rd GolfingSuccess 🇬🇷 687 98 8ms 20 days ago 604th BREMAUCY 🇫🇷 680 99 7ms 18 days ago 604th Schmitt-Very-Cool 680 99 8ms 14 days ago 606th albanian-laundromat 677 99 117ms 30 Oct 2025 607th MeWhenI 🇻🇦 677 104 17ms 27 days ago 608th Yewzir 🇧🇪 676 122 264ms 20 days ago 609th ahmetdemirag 🇨🇾 675 73 12ms 22 days ago 609th SirBogman 🇺🇸 675 73 13ms 19 days ago 611th HumanoidCPU 675 88 113ms 20 days ago 612th CaedenHarper 🇨🇦 671 117 116ms 20 days ago 613th duckyluuk 🇳🇱 670 66 10ms 30 Oct 2025 613th helbling 🇨🇭 670 66 10ms 7 days ago 615th Shanethegamer 🇺🇸 670 93 78ms 2 Nov 2025 616th TheZwierzLF 🇵🇱 669 71 464ms 8 days ago 617th Jacob385 669 105 361ms 10 Nov 2025 618th Babafaba 666 74 11ms 21 Nov 2025 618th TheZwierzLF 🇵🇱 666 74 13ms 21 days ago 618th BREMAUCY 🇫🇷 666 74 12ms 20 days ago 618th btjones0 666 74 11ms 19 days ago 618th RandGuy 666 74 11ms 18 days ago 618th annaproxy 666 74 13ms 18 days ago 618th aksyristos 666 74 11ms 17 days ago 618th hippalectryon-0 666 74 11ms 13 days ago 626th Yewzir 🇧🇪 664 92 3,884ms 20 days ago 627th Yewzir 🇧🇪 662 116 27ms 20 days ago 628th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 629th bitsandbeyond 🇳🇱 660 119 111ms 31 Oct 2025 630th LostSyntax21 🇬🇧 657 75 20ms 19 days ago 631st Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 632nd msbranicky 656 93 3,741ms 16 days ago 633rd MeWhenI 🇻🇦 656 95 78ms 27 days ago 634th bitsandbeyond 🇳🇱 655 75 94ms 5 Nov 2025 635th GolfingSuccess 🇬🇷 651 157 450ms 13 days ago 636th albanian-laundromat 650 91 4ms 26 days ago 637th bitsandbeyond 🇳🇱 650 98 9ms 16 Nov 2025 638th Ripick 648 76 12ms 14 Nov 2025 638th scpchicken 🇵🇼 648 76 11ms 15 days ago 640th AutumnWind75 648 119 385ms 10 days ago First Prev 561–640 of 1,088 Next Last