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 160th annaproxy 909 70 10ms 18 days ago 162nd kg583 🇺🇸 908 65 5ms 30 Oct 2025 162nd edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 164th sean-niemann 🇺🇸 908 81 388ms 31 Oct 2025 164th KasperKivimaeki 🇫🇮 908 81 367ms 31 Oct 2025 164th ovs-code 🇩🇪 908 81 387ms 31 Oct 2025 164th rucin93 🇵🇱 908 81 383ms 31 Oct 2025 164th edsrzf 🇳🇿 908 81 357ms 19 days ago 164th DialFrost 🇸🇬 908 81 363ms 18 days ago 170th GolfingSuccess 🇬🇷 907 85 76ms 30 Oct 2025 170th rucin93 🇵🇱 907 85 69ms 30 Oct 2025 170th KasperKivimaeki 🇫🇮 907 85 80ms 31 Oct 2025 170th bitsandbeyond 🇳🇱 907 85 60ms 1 Nov 2025 170th ovs-code 🇩🇪 907 85 71ms 3 Nov 2025 170th pardouin 🇫🇷 907 85 78ms 20 days ago 170th m-tkach 🇺🇦 907 85 76ms 18 days ago 170th DialFrost 🇸🇬 907 85 62ms 18 days ago 170th AdrienHache 🇫🇷 907 85 71ms 17 days ago 170th xsot 🇸🇬 907 85 64ms 17 days ago 180th lukegustafson 🇺🇸 906 48 131ms 19 days ago 181st sean-niemann 🇺🇸 906 69 40ms 18 days ago 182nd ovs-code 🇩🇪 906 74 120ms 21 days ago 183rd sean-niemann 🇺🇸 906 91 265ms 31 Oct 2025 183rd stefangimmillaro 906 91 268ms 1 Nov 2025 183rd pardouin 🇫🇷 906 91 251ms 20 days ago 186th luuumine 🇫🇷 904 72 117ms 16 days ago 187th emgordon154 903 67 5ms 26 days ago 188th edsrzf 🇳🇿 903 69 82ms 3 days ago 189th emgordon154 903 87 103ms 16 days ago 190th targrik 902 56 8ms 30 Oct 2025 191st GrayJoKing 🇦🇺 902 79 9ms 15 days ago 192nd CaedenHarper 🇨🇦 901 78 416ms 21 days ago 192nd m-tkach 🇺🇦 901 78 657ms 18 days ago 194th bitsandbeyond 🇳🇱 900 66 108ms 2 Nov 2025 194th stefangimmillaro 900 66 124ms 4 Nov 2025 196th MeWhenI 🇻🇦 898 53 3ms 27 days ago 197th sean-niemann 🇺🇸 898 67 1,225ms 18 days ago 198th jkelly467 898 68 3,920ms 18 days ago 199th edsrzf 🇳🇿 898 78 3ms 19 days ago 200th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 200th MeWhenI 🇻🇦 897 51 542ms 21 days ago 202nd luuumine 🇫🇷 897 86 71ms 9 days ago 203rd emgordon154 896 53 421ms 4 hours ago 204th stefangimmillaro 896 55 11ms 30 Oct 2025 204th bricknellj 896 55 12ms 30 Oct 2025 204th ovs-code 🇩🇪 896 55 13ms 31 Oct 2025 204th bitsandbeyond 🇳🇱 896 55 11ms 1 Nov 2025 204th GolfingSuccess 🇬🇷 896 55 13ms 3 Nov 2025 204th Mukundan314 896 55 11ms 15 Nov 2025 204th m-tkach 🇺🇦 896 55 11ms 26 days ago 204th snoozingnewt 🇨🇦 896 55 12ms 21 days ago 204th luuumine 🇫🇷 896 55 12ms 21 days ago 204th dokutan 896 55 13ms 18 days ago 204th xsot 🇸🇬 896 55 11ms 17 days ago 204th vhoulbreque 🇫🇷 896 55 13ms 17 days ago 204th jared-hughes 896 55 11ms 16 days ago 204th duckyluuk 🇳🇱 896 55 12ms 16 days ago 204th GrayJoKing 🇦🇺 896 55 12ms 14 days ago 219th edsrzf 🇳🇿 896 59 2ms 31 Oct 2025 219th CaedenHarper 🇨🇦 896 59 2ms 20 days ago 219th GrayJoKing 🇦🇺 896 59 2ms 16 days ago 222nd sean-niemann 🇺🇸 896 66 7ms 2 days ago 223rd CaedenHarper 🇨🇦 896 68 2ms 21 days ago 223rd m-tkach 🇺🇦 896 68 2ms 18 days ago 225th GolfingSuccess 🇬🇷 896 92 275ms 30 Oct 2025 225th edsrzf 🇳🇿 896 92 264ms 31 Oct 2025 225th KasperKivimaeki 🇫🇮 896 92 280ms 31 Oct 2025 228th kg583 🇺🇸 895 78 58ms 30 Oct 2025 228th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 230th m-tkach 🇺🇦 895 95 2ms 18 days ago 231st ovs-code 🇩🇪 894 50 55ms 21 days ago 231st sean-niemann 🇺🇸 894 50 41ms 18 days ago 233rd sean-niemann 🇺🇸 893 55 97ms 18 days ago 234th emgordon154 892 73 134ms 4 hours ago 235th sean-niemann 🇺🇸 892 86 26ms 18 days ago 236th DialFrost 🇸🇬 891 79 18ms 11 hours ago 237th sean-niemann 🇺🇸 891 89 36ms 18 days ago 238th CaedenHarper 🇨🇦 889 54 724ms 19 days ago 239th Shanethegamer 🇺🇸 889 79 462ms 4 Nov 2025 239th MeWhenI 🇻🇦 889 79 435ms 21 Nov 2025 First Prev 161–240 of 1,086 Next Last