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 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 160th KasperKivimaeki 🇫🇮 908 81 367ms 31 Oct 2025 160th ovs-code 🇩🇪 908 81 387ms 31 Oct 2025 160th rucin93 🇵🇱 908 81 383ms 31 Oct 2025 160th edsrzf 🇳🇿 908 81 357ms 17 days ago 160th DialFrost 🇸🇬 908 81 363ms 16 days ago 166th GolfingSuccess 🇬🇷 907 85 76ms 30 Oct 2025 166th rucin93 🇵🇱 907 85 69ms 30 Oct 2025 166th KasperKivimaeki 🇫🇮 907 85 80ms 31 Oct 2025 166th bitsandbeyond 🇳🇱 907 85 60ms 1 Nov 2025 166th ovs-code 🇩🇪 907 85 71ms 3 Nov 2025 166th pardouin 🇫🇷 907 85 78ms 19 days ago 166th m-tkach 🇺🇦 907 85 76ms 17 days ago 166th DialFrost 🇸🇬 907 85 62ms 16 days ago 166th AdrienHache 🇫🇷 907 85 71ms 16 days ago 166th xsot 🇸🇬 907 85 64ms 16 days ago 176th sean-niemann 🇺🇸 906 69 40ms 17 days ago 177th edsrzf 🇳🇿 905 70 4ms 31 Oct 2025 177th MeWhenI 🇻🇦 905 70 4ms 24 days ago 179th GolfingSuccess 🇬🇷 905 92 275ms 30 Oct 2025 179th sean-niemann 🇺🇸 905 92 265ms 31 Oct 2025 179th stefangimmillaro 905 92 264ms 31 Oct 2025 179th edsrzf 🇳🇿 905 92 264ms 31 Oct 2025 179th KasperKivimaeki 🇫🇮 905 92 280ms 31 Oct 2025 184th ovs-code 🇩🇪 904 74 120ms 20 days ago 185th emgordon154 903 67 5ms 25 days ago 186th luuumine 🇫🇷 903 72 117ms 15 days ago 187th targrik 902 56 8ms 30 Oct 2025 188th GrayJoKing 🇦🇺 902 79 9ms 13 days ago 189th emgordon154 902 88 103ms 14 days ago 190th bitsandbeyond 🇳🇱 900 66 108ms 2 Nov 2025 190th stefangimmillaro 900 66 124ms 4 Nov 2025 192nd CaedenHarper 🇨🇦 900 78 416ms 19 days ago 192nd m-tkach 🇺🇦 900 78 657ms 17 days ago 194th MeWhenI 🇻🇦 898 53 3ms 25 days ago 195th sean-niemann 🇺🇸 898 67 1,225ms 16 days ago 196th jkelly467 898 68 3,920ms 17 days ago 197th kg583 🇺🇸 898 75 10ms 30 Oct 2025 198th edsrzf 🇳🇿 898 78 3ms 17 days ago 199th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 199th MeWhenI 🇻🇦 897 51 542ms 19 days ago 201st luuumine 🇫🇷 897 86 71ms 7 days ago 202nd AlephSquirrel 896 56 11ms 30 Oct 2025 202nd hallvabo 🇳🇴 896 56 11ms 30 Oct 2025 202nd bizy-coder 896 56 13ms 22 days ago 202nd ndren 896 56 13ms 19 days ago 202nd zacjl 896 56 12ms 18 days ago 202nd klixel 🇨🇦 896 56 11ms 11 days ago 208th edsrzf 🇳🇿 896 59 2ms 31 Oct 2025 208th CaedenHarper 🇨🇦 896 59 2ms 18 days ago 208th GrayJoKing 🇦🇺 896 59 2ms 14 days ago 211th CaedenHarper 🇨🇦 896 68 2ms 19 days ago 211th m-tkach 🇺🇦 896 68 2ms 17 days ago 213th kg583 🇺🇸 895 78 58ms 30 Oct 2025 213th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 215th edsrzf 🇳🇿 895 79 78ms 17 days ago 216th m-tkach 🇺🇦 895 95 2ms 17 days ago 217th ovs-code 🇩🇪 894 50 55ms 20 days ago 217th sean-niemann 🇺🇸 894 50 41ms 16 days ago 219th kg583 🇺🇸 894 55 480ms 30 Oct 2025 219th bitsandbeyond 🇳🇱 894 55 512ms 1 Nov 2025 219th Shanethegamer 🇺🇸 894 55 525ms 3 Nov 2025 219th m-tkach 🇺🇦 894 55 475ms 24 days ago 219th ovs-code 🇩🇪 894 55 415ms 20 days ago 224th sean-niemann 🇺🇸 892 86 26ms 16 days ago 225th sean-niemann 🇺🇸 891 89 36ms 16 days ago 226th lyphyser 889 45 54ms 14 days ago 227th CaedenHarper 🇨🇦 889 54 724ms 18 days ago 228th Shanethegamer 🇺🇸 889 79 462ms 4 Nov 2025 228th MeWhenI 🇻🇦 889 79 435ms 27 days ago 228th snoozingnewt 🇨🇦 889 79 439ms 20 days ago 231st edsrzf 🇳🇿 887 67 101ms 31 Oct 2025 231st DialFrost 🇸🇬 887 67 104ms 16 days ago 233rd MeWhenI 🇻🇦 887 79 7ms 24 days ago 233rd Shanethegamer 🇺🇸 887 79 4ms 24 days ago 233rd AlephSquirrel 887 79 4ms 18 days ago 236th sean-niemann 🇺🇸 886 50 126ms 17 days ago 237th stefangimmillaro 886 57 5ms 31 Oct 2025 238th Shanethegamer 🇺🇸 886 83 362ms 3 Nov 2025 238th MeWhenI 🇻🇦 886 83 361ms 25 days ago 240th Shanethegamer 🇺🇸 886 87 72ms 4 Nov 2025 First Prev 161–240 of 1,080 Next Last