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 74th JayXon 🇺🇸 925 69 406ms 4 hours ago 82nd rucin93 🇵🇱 925 76 388ms 30 Oct 2025 82nd GolfingSuccess 🇬🇷 925 76 444ms 30 Oct 2025 82nd stefangimmillaro 925 76 431ms 31 Oct 2025 82nd sean-niemann 🇺🇸 925 76 479ms 31 Oct 2025 82nd edsrzf 🇳🇿 925 76 553ms 31 Oct 2025 82nd KasperKivimaeki 🇫🇮 925 76 492ms 1 Nov 2025 82nd namelessiw 925 76 367ms 21 days ago 82nd DialFrost 🇸🇬 925 76 361ms 18 days ago 82nd JayXon 🇺🇸 925 76 526ms 4 hours ago 91st 2bular 924 35 4ms 1 Nov 2025 92nd bitsandbeyond 🇳🇱 924 46 3ms 2 Nov 2025 92nd sean-niemann 🇺🇸 924 46 3ms 18 days ago 92nd xsot 🇸🇬 924 46 2ms 17 days ago 95th ovs-code 🇩🇪 924 57 66ms 13 days ago 96th bitsandbeyond 🇳🇱 923 52 706ms 11 Nov 2025 96th GolfingSuccess 🇬🇷 923 52 743ms 19 days ago 96th sean-niemann 🇺🇸 923 52 762ms 18 days ago 99th rucin93 🇵🇱 923 66 2ms 30 Oct 2025 99th KasperKivimaeki 🇫🇮 923 66 2ms 30 Oct 2025 99th saito-ta 🇯🇵 923 66 2ms 5 Nov 2025 99th DialFrost 🇸🇬 923 66 2ms 18 days ago 99th AdrienHache 🇫🇷 923 66 2ms 17 days ago 104th edsrzf 🇳🇿 923 73 9ms 19 days ago 105th stefangimmillaro 921 48 8ms 31 Oct 2025 105th rucin93 🇵🇱 921 48 9ms 31 Oct 2025 105th bitsandbeyond 🇳🇱 921 48 8ms 31 Oct 2025 105th GolfingSuccess 🇬🇷 921 48 8ms 3 Nov 2025 105th ovs-code 🇩🇪 921 48 8ms 21 days ago 105th sean-niemann 🇺🇸 921 48 9ms 18 days ago 105th xsot 🇸🇬 921 48 9ms 17 days ago 112th stefangimmillaro 919 50 750ms 30 Oct 2025 112th pardouin 🇫🇷 919 50 774ms 1 Nov 2025 112th sean-niemann 🇺🇸 919 50 813ms 18 days ago 115th GrayJoKing 🇦🇺 918 47 87ms 16 days ago 116th rucin93 🇵🇱 918 55 7ms 30 Oct 2025 117th Shanethegamer 🇺🇸 918 62 291ms 3 Nov 2025 117th MeWhenI 🇻🇦 918 62 120ms 26 days ago 117th edsrzf 🇳🇿 918 62 181ms 19 days ago 120th GolfingSuccess 🇬🇷 918 83 8ms 3 Nov 2025 121st sean-niemann 🇺🇸 918 84 81ms 18 days ago 122nd Shanethegamer 🇺🇸 917 49 420ms 3 Nov 2025 122nd sean-niemann 🇺🇸 917 49 232ms 2 days ago 124th rucin93 🇵🇱 917 71 116ms 30 Oct 2025 124th kumavale 917 71 124ms 31 Oct 2025 124th stefangimmillaro 917 71 119ms 31 Oct 2025 124th CaedenHarper 🇨🇦 917 71 121ms 20 days ago 124th edsrzf 🇳🇿 917 71 115ms 19 days ago 124th sean-niemann 🇺🇸 917 71 119ms 18 days ago 124th DialFrost 🇸🇬 917 71 119ms 18 days ago 124th JayXon 🇺🇸 917 71 132ms 14 hours ago 132nd JayXon 🇺🇸 916 90 283ms 5 hours ago 133rd sean-niemann 🇺🇸 914 65 117ms 18 days ago 134th Shanethegamer 🇺🇸 914 84 27ms 2 Nov 2025 134th m-tkach 🇺🇦 914 84 27ms 18 days ago 136th kg583 🇺🇸 913 52 365ms 30 Oct 2025 136th sean-niemann 🇺🇸 913 52 390ms 18 days ago 138th xnor-gate 913 54 11ms 21 days ago 138th hellopir2 913 54 10ms 21 days ago 138th rucin93 🇵🇱 913 54 12ms 12 days ago 138th emgordon154 913 54 12ms 5 hours ago 142nd sean-niemann 🇺🇸 913 64 5ms 18 days ago 143rd pardouin 🇫🇷 913 77 357ms 20 days ago 144th Kacarott 🇦🇺 913 80 69ms 21 days ago 144th ovs-code 🇩🇪 913 80 101ms 21 days ago 146th stefangimmillaro 911 55 82ms 31 Oct 2025 147th Shanethegamer 🇺🇸 911 66 1,247ms 3 Nov 2025 147th edsrzf 🇳🇿 911 66 1,434ms 19 days ago 149th pardouin 🇫🇷 911 67 4,035ms 1 Nov 2025 149th bitsandbeyond 🇳🇱 911 67 4,371ms 2 Nov 2025 149th sean-niemann 🇺🇸 911 67 2,803ms 18 days ago 152nd bitsandbeyond 🇳🇱 911 70 397ms 1 Nov 2025 152nd namelessiw 911 70 417ms 2 Nov 2025 154th stefangimmillaro 911 75 41ms 31 Oct 2025 155th edsrzf 🇳🇿 910 65 5ms 2 days ago 156th kg583 🇺🇸 910 74 11ms 30 Oct 2025 157th Mukundan314 909 67 2ms 27 days ago 157th luuumine 🇫🇷 909 67 2ms 16 days ago 157th Alex-x90 🇺🇸 909 67 2ms 16 days ago 160th IanUtley 909 70 10ms 7 Nov 2025 First Prev 81–160 of 1,086 Next Last