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 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 159th Alex-x90 🇺🇸 909 67 2ms 15 days ago 162nd IanUtley 909 70 10ms 7 Nov 2025 162nd annaproxy 909 70 10ms 17 days ago 164th kg583 🇺🇸 908 65 5ms 30 Oct 2025 164th edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 166th sean-niemann 🇺🇸 908 81 388ms 31 Oct 2025 166th KasperKivimaeki 🇫🇮 908 81 367ms 31 Oct 2025 166th ovs-code 🇩🇪 908 81 387ms 31 Oct 2025 166th rucin93 🇵🇱 908 81 383ms 31 Oct 2025 166th edsrzf 🇳🇿 908 81 357ms 18 days ago 166th DialFrost 🇸🇬 908 81 363ms 18 days ago 172nd GolfingSuccess 🇬🇷 907 85 76ms 30 Oct 2025 172nd rucin93 🇵🇱 907 85 69ms 30 Oct 2025 172nd KasperKivimaeki 🇫🇮 907 85 80ms 31 Oct 2025 172nd bitsandbeyond 🇳🇱 907 85 60ms 1 Nov 2025 172nd ovs-code 🇩🇪 907 85 71ms 3 Nov 2025 172nd pardouin 🇫🇷 907 85 78ms 20 days ago 172nd m-tkach 🇺🇦 907 85 76ms 18 days ago 172nd DialFrost 🇸🇬 907 85 62ms 18 days ago 172nd AdrienHache 🇫🇷 907 85 71ms 17 days ago 172nd xsot 🇸🇬 907 85 64ms 17 days ago 182nd sean-niemann 🇺🇸 906 69 40ms 18 days ago 183rd ovs-code 🇩🇪 906 74 120ms 21 days ago 184th GolfingSuccess 🇬🇷 906 92 275ms 30 Oct 2025 184th sean-niemann 🇺🇸 906 92 265ms 31 Oct 2025 184th stefangimmillaro 906 92 264ms 31 Oct 2025 184th edsrzf 🇳🇿 906 92 264ms 31 Oct 2025 184th KasperKivimaeki 🇫🇮 906 92 280ms 31 Oct 2025 184th JayXon 🇺🇸 906 92 296ms 68 mins ago 190th edsrzf 🇳🇿 905 70 4ms 31 Oct 2025 190th MeWhenI 🇻🇦 905 70 4ms 25 days ago 192nd luuumine 🇫🇷 904 72 117ms 16 days ago 193rd emgordon154 903 67 5ms 26 days ago 194th targrik 902 56 8ms 30 Oct 2025 195th GrayJoKing 🇦🇺 902 79 9ms 14 days ago 196th emgordon154 902 88 103ms 15 days ago 197th bitsandbeyond 🇳🇱 900 66 108ms 2 Nov 2025 197th stefangimmillaro 900 66 124ms 4 Nov 2025 199th CaedenHarper 🇨🇦 900 78 416ms 20 days ago 199th m-tkach 🇺🇦 900 78 657ms 18 days ago 201st MeWhenI 🇻🇦 898 53 3ms 26 days ago 202nd sean-niemann 🇺🇸 898 67 1,225ms 18 days ago 203rd jkelly467 898 68 3,920ms 18 days ago 204th kg583 🇺🇸 898 75 10ms 30 Oct 2025 205th edsrzf 🇳🇿 898 78 3ms 19 days ago 206th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 206th MeWhenI 🇻🇦 897 51 542ms 20 days ago 208th luuumine 🇫🇷 897 86 71ms 8 days ago 209th AlephSquirrel 896 56 11ms 30 Oct 2025 209th hallvabo 🇳🇴 896 56 11ms 30 Oct 2025 209th bizy-coder 896 56 13ms 23 days ago 209th ndren 896 56 13ms 20 days ago 209th zacjl 896 56 12ms 19 days ago 209th klixel 🇨🇦 896 56 11ms 12 days ago 215th edsrzf 🇳🇿 896 59 2ms 31 Oct 2025 215th CaedenHarper 🇨🇦 896 59 2ms 19 days ago 215th GrayJoKing 🇦🇺 896 59 2ms 16 days ago 218th CaedenHarper 🇨🇦 896 68 2ms 20 days ago 218th m-tkach 🇺🇦 896 68 2ms 18 days ago 220th kg583 🇺🇸 895 55 480ms 30 Oct 2025 220th bitsandbeyond 🇳🇱 895 55 512ms 1 Nov 2025 220th Shanethegamer 🇺🇸 895 55 525ms 3 Nov 2025 220th m-tkach 🇺🇦 895 55 475ms 25 days ago 220th ovs-code 🇩🇪 895 55 415ms 21 days ago 225th kg583 🇺🇸 895 78 58ms 30 Oct 2025 225th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 227th edsrzf 🇳🇿 895 79 78ms 18 days ago 228th m-tkach 🇺🇦 895 95 2ms 18 days ago 229th ovs-code 🇩🇪 894 50 55ms 21 days ago 229th sean-niemann 🇺🇸 894 50 41ms 18 days ago 231st sean-niemann 🇺🇸 892 86 26ms 18 days ago 232nd DialFrost 🇸🇬 891 79 18ms 4 hours ago 233rd sean-niemann 🇺🇸 891 89 36ms 18 days ago 234th lyphyser 889 45 54ms 15 days ago 235th CaedenHarper 🇨🇦 889 54 724ms 19 days ago 236th Shanethegamer 🇺🇸 889 79 462ms 4 Nov 2025 236th MeWhenI 🇻🇦 889 79 435ms 21 Nov 2025 236th snoozingnewt 🇨🇦 889 79 439ms 21 days ago 239th sean-niemann 🇺🇸 887 50 126ms 18 days ago 240th edsrzf 🇳🇿 887 67 101ms 31 Oct 2025 First Prev 161–240 of 1,091 Next Last