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 79th GolfingSuccess 🇬🇷 924 69 389ms 31 Oct 2025 79th AdrienHache 🇫🇷 924 69 405ms 1 Nov 2025 79th pardouin 🇫🇷 924 69 388ms 20 days ago 79th DialFrost 🇸🇬 924 69 413ms 18 days ago 79th KasperKivimaeki 🇫🇮 924 69 383ms 17 days ago 86th rucin93 🇵🇱 924 76 388ms 30 Oct 2025 86th GolfingSuccess 🇬🇷 924 76 444ms 30 Oct 2025 86th stefangimmillaro 924 76 431ms 31 Oct 2025 86th sean-niemann 🇺🇸 924 76 479ms 31 Oct 2025 86th edsrzf 🇳🇿 924 76 553ms 31 Oct 2025 86th KasperKivimaeki 🇫🇮 924 76 492ms 1 Nov 2025 86th namelessiw 924 76 367ms 21 days ago 86th DialFrost 🇸🇬 924 76 361ms 18 days ago 94th bitsandbeyond 🇳🇱 923 52 706ms 11 Nov 2025 94th GolfingSuccess 🇬🇷 923 52 743ms 19 days ago 94th sean-niemann 🇺🇸 923 52 762ms 18 days ago 97th rucin93 🇵🇱 923 66 2ms 30 Oct 2025 97th KasperKivimaeki 🇫🇮 923 66 2ms 30 Oct 2025 97th saito-ta 🇯🇵 923 66 2ms 5 Nov 2025 97th DialFrost 🇸🇬 923 66 2ms 18 days ago 97th AdrienHache 🇫🇷 923 66 2ms 17 days ago 102nd edsrzf 🇳🇿 923 73 9ms 19 days ago 103rd stefangimmillaro 921 48 8ms 31 Oct 2025 103rd rucin93 🇵🇱 921 48 9ms 31 Oct 2025 103rd bitsandbeyond 🇳🇱 921 48 8ms 31 Oct 2025 103rd GolfingSuccess 🇬🇷 921 48 8ms 3 Nov 2025 103rd ovs-code 🇩🇪 921 48 8ms 21 days ago 103rd sean-niemann 🇺🇸 921 48 9ms 18 days ago 103rd xsot 🇸🇬 921 48 9ms 17 days ago 110th sean-niemann 🇺🇸 921 55 97ms 18 days ago 111th GrayJoKing 🇦🇺 918 47 87ms 16 days ago 112th rucin93 🇵🇱 918 55 7ms 30 Oct 2025 113th Shanethegamer 🇺🇸 918 62 291ms 3 Nov 2025 113th MeWhenI 🇻🇦 918 62 120ms 26 days ago 113th edsrzf 🇳🇿 918 62 181ms 18 days ago 116th GolfingSuccess 🇬🇷 918 83 8ms 3 Nov 2025 117th sean-niemann 🇺🇸 918 84 81ms 18 days ago 118th Shanethegamer 🇺🇸 917 49 420ms 3 Nov 2025 118th sean-niemann 🇺🇸 917 49 232ms 2 days ago 120th rucin93 🇵🇱 917 71 116ms 30 Oct 2025 120th kumavale 917 71 124ms 31 Oct 2025 120th stefangimmillaro 917 71 119ms 31 Oct 2025 120th CaedenHarper 🇨🇦 917 71 121ms 20 days ago 120th edsrzf 🇳🇿 917 71 115ms 18 days ago 120th sean-niemann 🇺🇸 917 71 119ms 18 days ago 120th DialFrost 🇸🇬 917 71 119ms 18 days ago 120th JayXon 🇺🇸 917 71 132ms 8 hours ago 128th JayXon 🇺🇸 916 90 283ms 10 mins ago 129th sean-niemann 🇺🇸 914 65 117ms 18 days ago 130th Shanethegamer 🇺🇸 914 84 27ms 2 Nov 2025 130th m-tkach 🇺🇦 914 84 27ms 18 days ago 132nd kg583 🇺🇸 913 52 365ms 30 Oct 2025 132nd sean-niemann 🇺🇸 913 52 390ms 18 days ago 134th sean-niemann 🇺🇸 913 64 5ms 18 days ago 135th Kacarott 🇦🇺 913 80 69ms 20 days ago 135th ovs-code 🇩🇪 913 80 101ms 20 days ago 137th xnor-gate 912 54 11ms 20 days ago 137th hellopir2 912 54 10ms 20 days ago 137th rucin93 🇵🇱 912 54 12ms 11 days ago 140th pardouin 🇫🇷 912 77 357ms 20 days ago 141st stefangimmillaro 911 55 82ms 31 Oct 2025 142nd Shanethegamer 🇺🇸 911 66 1,247ms 3 Nov 2025 142nd edsrzf 🇳🇿 911 66 1,434ms 18 days ago 144th pardouin 🇫🇷 911 67 4,035ms 1 Nov 2025 144th bitsandbeyond 🇳🇱 911 67 4,371ms 2 Nov 2025 144th sean-niemann 🇺🇸 911 67 2,803ms 18 days ago 147th stefangimmillaro 911 75 41ms 31 Oct 2025 148th edsrzf 🇳🇿 910 65 5ms 2 days ago 149th bitsandbeyond 🇳🇱 910 70 397ms 1 Nov 2025 149th namelessiw 910 70 417ms 2 Nov 2025 151st kg583 🇺🇸 910 74 11ms 30 Oct 2025 152nd Mukundan314 909 67 2ms 26 days ago 152nd luuumine 🇫🇷 909 67 2ms 16 days ago 152nd Alex-x90 🇺🇸 909 67 2ms 16 days ago 155th IanUtley 909 70 10ms 7 Nov 2025 155th annaproxy 909 70 10ms 17 days ago 157th kg583 🇺🇸 908 65 5ms 30 Oct 2025 157th edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 159th sean-niemann 🇺🇸 908 81 388ms 31 Oct 2025 159th KasperKivimaeki 🇫🇮 908 81 367ms 31 Oct 2025 First Prev 81–160 of 1,080 Next Last