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 321st CaedenHarper 🇨🇦 869 95 290ms 21 days ago 322nd albanian-laundromat 869 220 12ms 21 days ago 323rd bitsandbeyond 🇳🇱 868 72 41ms 1 Nov 2025 324th MeWhenI 🇻🇦 868 75 121ms 23 Nov 2025 325th MeWhenI 🇻🇦 868 89 55ms 21 Nov 2025 326th Shanethegamer 🇺🇸 867 49 420ms 3 Nov 2025 327th targrik 867 51 9ms 30 Oct 2025 327th luuumine 🇫🇷 867 51 8ms 22 days ago 327th emgordon154 867 51 9ms 5 days ago 330th bitsandbeyond 🇳🇱 867 53 798ms 1 Nov 2025 331st emgordon154 867 85 547ms 5 days ago 332nd KatieLG 🇬🇧 867 98 2ms 25 days ago 333rd albanian-laundromat 866 72 87ms 9 days ago 334th KasperKivimaeki 🇫🇮 865 57 11ms 30 Oct 2025 334th edsrzf 🇳🇿 865 57 12ms 31 Oct 2025 334th Shanethegamer 🇺🇸 865 57 11ms 3 Nov 2025 334th 4atj 865 57 12ms 5 Nov 2025 334th MeWhenI 🇻🇦 865 57 11ms 21 Nov 2025 334th CaedenHarper 🇨🇦 865 57 11ms 27 days ago 334th blaztoma 🇱🇹 865 57 12ms 26 days ago 334th FortuiteMan 🇫🇷 865 57 11ms 25 days ago 334th KatieLG 🇬🇧 865 57 11ms 25 days ago 334th ryyyn 🇺🇸 865 57 11ms 25 days ago 334th DialFrost 🇸🇬 865 57 11ms 24 days ago 334th fuzzylojik-golf 🇺🇸 865 57 11ms 23 days ago 334th starfihs 865 57 11ms 22 days ago 334th qpwoeirut 865 57 11ms 19 days ago 334th dominikvytisk 865 57 11ms 18 days ago 334th Natanaelel 🇸🇪 865 57 12ms 29 hours ago 350th sean-niemann 🇺🇸 865 74 16ms 5 days ago 351st MeWhenI 🇻🇦 865 79 48ms 23 Nov 2025 352nd edsrzf 🇳🇿 865 88 8ms 30 Oct 2025 352nd sean-niemann 🇺🇸 865 88 9ms 8 days ago 354th bitsandbeyond 🇳🇱 864 55 512ms 1 Nov 2025 354th Shanethegamer 🇺🇸 864 55 525ms 3 Nov 2025 354th m-tkach 🇺🇦 864 55 475ms 24 Nov 2025 354th ovs-code 🇩🇪 864 55 415ms 28 Nov 2025 354th snoozingnewt 🇨🇦 864 55 368ms 27 days ago 354th dokutan 864 55 366ms 24 days ago 360th dokutan 864 78 14ms 24 days ago 361st canissimia 🇦🇶 864 179 33ms 2 days ago 362nd MeWhenI 🇻🇦 863 89 27ms 24 Nov 2025 363rd arcpolaris 862 74 364ms 23 days ago 364th MeWhenI 🇻🇦 862 92 25ms 24 Nov 2025 365th MeWhenI 🇻🇦 861 222 13ms 23 Nov 2025 366th bitsandbeyond 🇳🇱 860 52 36ms 1 Nov 2025 367th GolfingSuccess 🇬🇷 860 74 13ms 15 Nov 2025 368th pardouin 🇫🇷 860 85 62ms 25 days ago 369th DialFrost 🇸🇬 860 96 287ms 5 days ago 370th vhoulbreque 🇫🇷 860 106 8ms 24 days ago 371st iczelia 🇩🇪 859 71 2ms 24 days ago 372nd albanian-laundromat 859 119 402ms 30 Oct 2025 373rd CaedenHarper 🇨🇦 858 90 395ms 27 days ago 373rd BlankSpruce 858 90 58ms 20 days ago 375th MeWhenI 🇻🇦 857 56 679ms 24 Nov 2025 376th rucin93 🇵🇱 854 62 2ms 31 Oct 2025 376th dokutan 854 62 2ms 27 days ago 378th bitsandbeyond 🇳🇱 854 90 26ms 2 Nov 2025 379th rucin93 🇵🇱 853 51 124ms 31 Oct 2025 379th GolfingSuccess 🇬🇷 853 51 130ms 3 Nov 2025 381st bitsandbeyond 🇳🇱 852 93 27ms 1 Nov 2025 382nd Shanethegamer 🇺🇸 851 52 9ms 4 Nov 2025 382nd MeWhenI 🇻🇦 851 52 8ms 21 Nov 2025 382nd CaedenHarper 🇨🇦 851 52 8ms 27 days ago 385th MeWhenI 🇻🇦 851 54 779ms 23 Nov 2025 385th emgordon154 851 54 1,048ms 6 days ago 387th DialFrost 🇸🇬 851 57 2ms 6 days ago 388th MeWhenI 🇻🇦 851 70 101ms 23 Nov 2025 389th bitsandbeyond 🇳🇱 851 97 250ms 1 Nov 2025 390th dokutan 850 72 3,791ms 27 days ago 391st MeWhenI 🇻🇦 849 69 1,239ms 23 Nov 2025 392nd Natanaelel 🇸🇪 848 46 33ms 8 Nov 2025 393rd AlephSquirrel 848 56 444ms 30 Oct 2025 393rd MeWhenI 🇻🇦 848 56 393ms 23 Nov 2025 393rd CaedenHarper 🇨🇦 848 56 459ms 27 days ago 393rd Kacarott 🇦🇺 848 56 482ms 26 days ago 397th h3ra993huskp 🇯🇵 847 83 343ms 12 days ago 398th MeWhenI 🇻🇦 845 70 4ms 24 Nov 2025 399th edsrzf 🇳🇿 845 93 137ms 25 days ago 400th Natanaelel 🇸🇪 844 53 38ms 4 Nov 2025 First Prev 321–400 of 1,116 Next Last