The Calendar hole will go live in approximately 13 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 75th KasperKivimaeki 🇫🇮 924 69 383ms 16 days ago 82nd rucin93 🇵🇱 924 76 388ms 30 Oct 2025 82nd GolfingSuccess 🇬🇷 924 76 444ms 30 Oct 2025 82nd stefangimmillaro 924 76 431ms 31 Oct 2025 82nd sean-niemann 🇺🇸 924 76 479ms 31 Oct 2025 82nd edsrzf 🇳🇿 924 76 553ms 31 Oct 2025 82nd KasperKivimaeki 🇫🇮 924 76 492ms 1 Nov 2025 82nd namelessiw 924 76 367ms 20 days ago 82nd DialFrost 🇸🇬 924 76 361ms 16 days ago 90th bitsandbeyond 🇳🇱 923 52 706ms 11 Nov 2025 90th GolfingSuccess 🇬🇷 923 52 743ms 18 days ago 90th sean-niemann 🇺🇸 923 52 762ms 16 days ago 93rd rucin93 🇵🇱 923 66 2ms 30 Oct 2025 93rd KasperKivimaeki 🇫🇮 923 66 2ms 30 Oct 2025 93rd saito-ta 🇯🇵 923 66 2ms 5 Nov 2025 93rd DialFrost 🇸🇬 923 66 2ms 16 days ago 93rd AdrienHache 🇫🇷 923 66 2ms 16 days ago 98th edsrzf 🇳🇿 923 73 9ms 17 days ago 99th lukegustafson 🇺🇸 922 48 131ms 17 days ago 100th sean-niemann 🇺🇸 921 55 97ms 16 days ago 101st stefangimmillaro 920 48 8ms 31 Oct 2025 101st rucin93 🇵🇱 920 48 9ms 31 Oct 2025 101st bitsandbeyond 🇳🇱 920 48 8ms 31 Oct 2025 101st GolfingSuccess 🇬🇷 920 48 8ms 3 Nov 2025 101st ovs-code 🇩🇪 920 48 8ms 19 days ago 101st sean-niemann 🇺🇸 920 48 9ms 16 days ago 101st xsot 🇸🇬 920 48 9ms 16 days ago 108th rucin93 🇵🇱 918 55 7ms 30 Oct 2025 109th Shanethegamer 🇺🇸 918 62 291ms 3 Nov 2025 109th MeWhenI 🇻🇦 918 62 120ms 24 days ago 109th edsrzf 🇳🇿 918 62 181ms 17 days ago 112th GolfingSuccess 🇬🇷 918 83 8ms 3 Nov 2025 113th sean-niemann 🇺🇸 918 84 81ms 16 days ago 114th Shanethegamer 🇺🇸 917 49 420ms 3 Nov 2025 114th sean-niemann 🇺🇸 917 49 232ms 15 hours ago 116th rucin93 🇵🇱 915 71 116ms 30 Oct 2025 116th kumavale 915 71 124ms 31 Oct 2025 116th stefangimmillaro 915 71 119ms 31 Oct 2025 116th CaedenHarper 🇨🇦 915 71 121ms 18 days ago 116th edsrzf 🇳🇿 915 71 115ms 17 days ago 116th sean-niemann 🇺🇸 915 71 119ms 16 days ago 116th DialFrost 🇸🇬 915 71 119ms 16 days ago 123rd sean-niemann 🇺🇸 915 91 265ms 31 Oct 2025 123rd stefangimmillaro 915 91 268ms 1 Nov 2025 123rd pardouin 🇫🇷 915 91 251ms 19 days ago 126th sean-niemann 🇺🇸 914 65 117ms 16 days ago 127th Shanethegamer 🇺🇸 914 84 27ms 2 Nov 2025 127th m-tkach 🇺🇦 914 84 27ms 17 days ago 129th sean-niemann 🇺🇸 913 64 5ms 16 days ago 130th Kacarott 🇦🇺 913 80 69ms 19 days ago 130th ovs-code 🇩🇪 913 80 101ms 19 days ago 132nd kg583 🇺🇸 912 52 365ms 30 Oct 2025 132nd sean-niemann 🇺🇸 912 52 390ms 16 days ago 134th xnor-gate 912 54 11ms 19 days ago 134th hellopir2 912 54 10ms 19 days ago 134th rucin93 🇵🇱 912 54 12ms 10 days ago 137th pardouin 🇫🇷 912 77 357ms 19 days ago 138th stefangimmillaro 911 55 82ms 31 Oct 2025 139th Shanethegamer 🇺🇸 911 66 1,247ms 3 Nov 2025 139th edsrzf 🇳🇿 911 66 1,434ms 17 days ago 141st pardouin 🇫🇷 911 67 4,035ms 1 Nov 2025 141st bitsandbeyond 🇳🇱 911 67 4,371ms 2 Nov 2025 141st sean-niemann 🇺🇸 911 67 3,694ms 16 days ago 144th stefangimmillaro 911 75 41ms 31 Oct 2025 145th edsrzf 🇳🇿 910 65 5ms 16 hours ago 146th bitsandbeyond 🇳🇱 910 70 397ms 1 Nov 2025 146th namelessiw 910 70 417ms 2 Nov 2025 148th kg583 🇺🇸 910 74 11ms 30 Oct 2025 149th Mukundan314 909 67 2ms 25 days ago 149th luuumine 🇫🇷 909 67 2ms 15 days ago 149th Alex-x90 🇺🇸 909 67 2ms 14 days ago 152nd IanUtley 909 70 10ms 7 Nov 2025 152nd annaproxy 909 70 10ms 16 days ago 154th kg583 🇺🇸 908 65 5ms 30 Oct 2025 154th edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 156th sean-niemann 🇺🇸 908 81 388ms 31 Oct 2025 156th KasperKivimaeki 🇫🇮 908 81 367ms 31 Oct 2025 156th ovs-code 🇩🇪 908 81 387ms 31 Oct 2025 156th rucin93 🇵🇱 908 81 383ms 31 Oct 2025 156th edsrzf 🇳🇿 908 81 357ms 17 days ago First Prev 81–160 of 1,068 Next Last