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 641st LostSyntax21 🇬🇧 657 75 20ms 21 days ago 642nd msbranicky 657 93 3,741ms 18 days ago 643rd Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 644th MeWhenI 🇻🇦 656 95 78ms 23 Nov 2025 645th bitsandbeyond 🇳🇱 655 75 94ms 5 Nov 2025 646th GolfingSuccess 🇬🇷 651 157 450ms 15 days ago 647th albanian-laundromat 650 91 4ms 24 Nov 2025 648th bitsandbeyond 🇳🇱 650 98 9ms 16 Nov 2025 649th Ripick 649 76 12ms 14 Nov 2025 649th scpchicken 🇵🇼 649 76 11ms 17 days ago 651st AutumnWind75 649 119 385ms 12 days ago 652nd BREMAUCY 🇫🇷 641 74 454ms 21 days ago 653rd AlephSquirrel 641 105 8ms 22 days ago 654th mousetail 🇳🇱 640 77 11ms 23 Nov 2025 655th GolfingSuccess 🇬🇷 635 72 1ms 30 Oct 2025 656th dokutan 635 163 1,613ms 16 days ago 657th HumanoidCPU 633 111 370ms 23 days ago 658th HumanoidCPU 633 122 72ms 23 days ago 659th JOrE20 🇺🇸 632 70 8ms 24 days ago 660th Bmrl7 632 78 11ms 2 days ago 661st BREMAUCY 🇫🇷 630 97 4,001ms 19 days ago 662nd msbranicky 630 131 269ms 18 days ago 663rd stackofbears 629 62 39ms 82 mins ago 664th prestosilver 🇺🇸 629 97 2ms 19 days ago 665th aksyristos 628 123 56ms 19 days ago 666th msbranicky 624 79 11ms 26 days ago 667th msbranicky 624 108 8ms 18 days ago 668th alexsave 623 71 9ms 22 days ago 669th HumanoidCPU 620 85 90ms 23 days ago 670th HumanoidCPU 620 105 111ms 23 days ago 671st albanian-laundromat 616 82 5ms 27 days ago 672nd albanian-laundromat 616 99 2ms 22 days ago 673rd MeWhenI 🇻🇦 615 76 7ms 23 Nov 2025 674th IISResetMe 615 78 278ms 22 days ago 675th MeWhenI 🇻🇦 615 104 17ms 23 Nov 2025 676th HumanoidCPU 614 72 9ms 23 days ago 676th olleicua 🇺🇸 614 72 10ms 14 days ago 678th JOrE20 🇺🇸 613 102 43ms 24 days ago 679th tomh1012 613 104 415ms 21 days ago 680th HumanoidCPU 609 121 407ms 22 days ago 681st HumanoidCPU 608 105 404ms 23 days ago 682nd AlephSquirrel 607 79 271ms 21 days ago 683rd MeWhenI 🇻🇦 605 100 6ms 24 Nov 2025 684th D-MOVE 🇵🇭 604 74 46ms 13 days ago 685th MeWhenI 🇻🇦 604 111 125ms 24 Nov 2025 686th msbranicky 601 79 448ms 18 days ago 687th themoonisacheese 601 82 11ms 13 days ago 688th Schmitt-Very-Cool 600 127 10ms 16 days ago 689th CaedenHarper 🇨🇦 599 88 107ms 22 days ago 690th Nicronmil 597 74 9ms 11 days ago 690th two-bad 🇬🇧 597 74 10ms 5 days ago 692nd anter69 🇭🇺 597 77 809ms 16 days ago 693rd olleicua 🇺🇸 596 75 54ms 15 days ago 694th HumanoidCPU 595 107 9ms 23 days ago 695th RDShah 594 83 11ms 21 days ago 696th CaedenHarper 🇨🇦 592 81 240ms 22 days ago 697th KatieLG 🇬🇧 589 108 8ms 21 days ago 698th HumanoidCPU 588 74 130ms 23 days ago 699th Yewzir 🇧🇪 585 82 285ms 22 days ago 700th aksyristos 585 83 2ms 19 days ago 701st BREMAUCY 🇫🇷 585 109 461ms 21 days ago 702nd BREMAUCY 🇫🇷 585 141 260ms 20 days ago 703rd MeWhenI 🇻🇦 583 74 100ms 24 Nov 2025 704th dokutan 582 73 228ms 24 days ago 705th Protothor 582 76 9ms 18 days ago 706th zgialor-lab 580 85 28ms 6 days ago 707th SwordF-Official 575 92 2ms 16 Nov 2025 707th HumanoidCPU 575 92 2ms 23 days ago 709th Maashau 575 106 2ms 21 days ago 710th BREMAUCY 🇫🇷 573 78 38ms 21 days ago 711th Schmitt-Very-Cool 573 86 10ms 17 days ago 712th MeWhenI 🇻🇦 573 111 16ms 24 days ago 713th HumanoidCPU 572 181 2,256ms 22 days ago 714th Schmitt-Very-Cool 571 128 69ms 16 days ago 715th dokutan 567 110 68ms 10 days ago 716th albanian-laundromat 563 104 1,258ms 30 Oct 2025 717th HumanoidCPU 562 111 110ms 22 days ago 718th CaedenHarper 🇨🇦 557 121 10ms 22 days ago 719th TheZwierzLF 🇵🇱 552 81 32ms 29 hours ago 720th bitsandbeyond 🇳🇱 551 107 4ms 16 Nov 2025 First Prev 641–720 of 1,104 Next Last