The Calendar hole will go live in approximately 4 days. Why not try and solve it ahead of time?
Tower of Hanoi in all languages in bytes. 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 Bytes Time Submitted 80th KasperKivimaeki 🇫🇮 925 66 2ms 30 Oct 2025 80th saito-ta 🇯🇵 925 66 2ms 5 Nov 2025 80th DialFrost 🇸🇬 925 66 2ms 25 days ago 80th AdrienHache 🇫🇷 925 66 2ms 25 days ago 80th nwellnhof 🇩🇪 925 66 2ms 24 hours ago 86th sean-niemann 🇺🇸 925 69 384ms 31 Oct 2025 86th stefangimmillaro 925 69 354ms 31 Oct 2025 86th GolfingSuccess 🇬🇷 925 69 351ms 31 Oct 2025 86th AdrienHache 🇫🇷 925 69 405ms 1 Nov 2025 86th pardouin 🇫🇷 925 69 388ms 27 days ago 86th DialFrost 🇸🇬 925 69 411ms 25 days ago 86th KasperKivimaeki 🇫🇮 925 69 372ms 25 days ago 86th JayXon 🇺🇸 925 69 406ms 7 days ago 94th rucin93 🇵🇱 925 76 388ms 30 Oct 2025 94th GolfingSuccess 🇬🇷 925 76 444ms 30 Oct 2025 94th stefangimmillaro 925 76 431ms 31 Oct 2025 94th sean-niemann 🇺🇸 925 76 479ms 31 Oct 2025 94th edsrzf 🇳🇿 925 76 553ms 31 Oct 2025 94th KasperKivimaeki 🇫🇮 925 76 492ms 1 Nov 2025 94th namelessiw 925 76 367ms 28 Nov 2025 94th DialFrost 🇸🇬 925 76 361ms 25 days ago 94th JayXon 🇺🇸 925 76 418ms 7 days ago 103rd 2bular 924 35 4ms 1 Nov 2025 104th bitsandbeyond 🇳🇱 924 46 3ms 2 Nov 2025 104th sean-niemann 🇺🇸 924 46 3ms 25 days ago 104th xsot 🇸🇬 924 46 2ms 25 days ago 107th lukegustafson 🇺🇸 924 48 131ms 26 days ago 108th ovs-code 🇩🇪 924 57 66ms 20 days ago 109th bitsandbeyond 🇳🇱 923 52 706ms 11 Nov 2025 109th GolfingSuccess 🇬🇷 923 52 743ms 27 days ago 109th sean-niemann 🇺🇸 923 52 762ms 25 days ago 112th JayXon 🇺🇸 923 59 127ms 5 days ago 113th edsrzf 🇳🇿 923 73 9ms 26 days ago 114th stefangimmillaro 922 48 8ms 31 Oct 2025 114th rucin93 🇵🇱 922 48 9ms 31 Oct 2025 114th bitsandbeyond 🇳🇱 922 48 8ms 31 Oct 2025 114th GolfingSuccess 🇬🇷 922 48 8ms 3 Nov 2025 114th ovs-code 🇩🇪 922 48 8ms 28 Nov 2025 114th sean-niemann 🇺🇸 922 48 9ms 25 days ago 114th xsot 🇸🇬 922 48 9ms 25 days ago 114th nwellnhof 🇩🇪 922 48 10ms 25 hours ago 122nd sean-niemann 🇺🇸 920 84 60ms 25 days ago 122nd JayXon 🇺🇸 920 84 61ms 6 days ago 122nd nwellnhof 🇩🇪 920 84 59ms 24 hours ago 125th stefangimmillaro 919 50 750ms 30 Oct 2025 125th pardouin 🇫🇷 919 50 774ms 1 Nov 2025 125th sean-niemann 🇺🇸 919 50 813ms 25 days ago 128th rucin93 🇵🇱 918 55 6ms 30 Oct 2025 129th JayXon 🇺🇸 918 62 3ms 6 days ago 130th GolfingSuccess 🇬🇷 918 83 8ms 3 Nov 2025 131st rucin93 🇵🇱 917 71 116ms 30 Oct 2025 131st kumavale 917 71 124ms 31 Oct 2025 131st stefangimmillaro 917 71 119ms 31 Oct 2025 131st CaedenHarper 🇨🇦 917 71 121ms 27 days ago 131st edsrzf 🇳🇿 917 71 115ms 26 days ago 131st sean-niemann 🇺🇸 917 71 119ms 25 days ago 131st DialFrost 🇸🇬 917 71 119ms 25 days ago 131st JayXon 🇺🇸 917 71 125ms 7 days ago 139th JayXon 🇺🇸 917 90 279ms 7 days ago 139th sean-niemann 🇺🇸 917 90 280ms 6 days ago 141st sean-niemann 🇺🇸 916 65 110ms 25 days ago 141st JayXon 🇺🇸 916 65 103ms 6 days ago 143rd JayXon 🇺🇸 915 64 1,334ms 5 days ago 144th Shanethegamer 🇺🇸 915 84 27ms 2 Nov 2025 144th m-tkach 🇺🇦 915 84 27ms 26 days ago 146th stefangimmillaro 913 55 11ms 30 Oct 2025 146th bricknellj 913 55 12ms 30 Oct 2025 146th stefangimmillaro 913 55 82ms 31 Oct 2025 146th ovs-code 🇩🇪 913 55 13ms 31 Oct 2025 146th bitsandbeyond 🇳🇱 913 55 11ms 1 Nov 2025 146th GolfingSuccess 🇬🇷 913 55 13ms 3 Nov 2025 146th Mukundan314 913 55 11ms 15 Nov 2025 146th m-tkach 🇺🇦 913 55 11ms 24 Nov 2025 146th sean-niemann 🇺🇸 913 55 15ms 25 days ago 146th xsot 🇸🇬 913 55 11ms 25 days ago 146th jared-hughes 913 55 11ms 23 days ago 146th duckyluuk 🇳🇱 913 55 12ms 23 days ago 146th GrayJoKing 🇦🇺 913 55 12ms 22 days ago 159th pardouin 🇫🇷 913 67 3,954ms 1 Nov 2025 159th bitsandbeyond 🇳🇱 913 67 3,602ms 2 Nov 2025 First Prev 81–160 of 1,131 Next Last