The Calendar hole will go live in approximately 9 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 160th luuumine 🇫🇷 910 67 2ms 19 days ago 160th Alex-x90 🇺🇸 910 67 2ms 18 days ago 163rd kg583 🇺🇸 910 74 11ms 30 Oct 2025 164th sean-niemann 🇺🇸 910 81 388ms 31 Oct 2025 164th KasperKivimaeki 🇫🇮 910 81 367ms 31 Oct 2025 164th ovs-code 🇩🇪 910 81 387ms 31 Oct 2025 164th rucin93 🇵🇱 910 81 383ms 31 Oct 2025 164th edsrzf 🇳🇿 910 81 357ms 21 days ago 164th DialFrost 🇸🇬 910 81 363ms 20 days ago 164th JayXon 🇺🇸 910 81 467ms 34 hours ago 171st IanUtley 909 70 10ms 7 Nov 2025 171st annaproxy 909 70 10ms 20 days ago 173rd kg583 🇺🇸 908 65 5ms 30 Oct 2025 173rd edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 175th GolfingSuccess 🇬🇷 908 85 76ms 30 Oct 2025 175th rucin93 🇵🇱 908 85 69ms 30 Oct 2025 175th KasperKivimaeki 🇫🇮 908 85 80ms 31 Oct 2025 175th bitsandbeyond 🇳🇱 908 85 60ms 1 Nov 2025 175th ovs-code 🇩🇪 908 85 71ms 3 Nov 2025 175th pardouin 🇫🇷 908 85 78ms 23 days ago 175th m-tkach 🇺🇦 908 85 76ms 21 days ago 175th DialFrost 🇸🇬 908 85 62ms 20 days ago 175th AdrienHache 🇫🇷 908 85 71ms 20 days ago 175th xsot 🇸🇬 908 85 64ms 20 days ago 185th lukegustafson 🇺🇸 906 48 131ms 21 days ago 186th sean-niemann 🇺🇸 906 69 40ms 20 days ago 187th ovs-code 🇩🇪 906 74 120ms 24 days ago 188th stefangimmillaro 906 91 268ms 1 Nov 2025 188th pardouin 🇫🇷 906 91 251ms 22 days ago 190th luuumine 🇫🇷 904 72 117ms 19 days ago 190th emgordon154 904 72 140ms 41 hours ago 192nd emgordon154 903 67 5ms 23 Nov 2025 193rd edsrzf 🇳🇿 903 69 82ms 5 days ago 194th emgordon154 903 87 103ms 18 days ago 195th targrik 902 56 8ms 30 Oct 2025 196th bitsandbeyond 🇳🇱 902 66 108ms 2 Nov 2025 196th stefangimmillaro 902 66 124ms 4 Nov 2025 198th GrayJoKing 🇦🇺 902 79 9ms 17 days ago 199th DialFrost 🇸🇬 901 71 21ms 13 hours ago 200th CaedenHarper 🇨🇦 901 78 416ms 23 days ago 200th m-tkach 🇺🇦 901 78 657ms 21 days ago 202nd MeWhenI 🇻🇦 899 53 3ms 23 Nov 2025 203rd jkelly467 899 68 3,920ms 20 days ago 204th edsrzf 🇳🇿 898 78 3ms 21 days ago 205th luuumine 🇫🇷 898 86 71ms 11 days ago 206th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 206th MeWhenI 🇻🇦 897 51 542ms 23 days ago 208th edsrzf 🇳🇿 897 59 2ms 31 Oct 2025 208th CaedenHarper 🇨🇦 897 59 2ms 22 days ago 208th GrayJoKing 🇦🇺 897 59 2ms 18 days ago 211th CaedenHarper 🇨🇦 897 68 2ms 23 days ago 211th m-tkach 🇺🇦 897 68 2ms 21 days ago 213th emgordon154 896 53 421ms 2 days ago 214th stefangimmillaro 896 55 11ms 30 Oct 2025 214th bricknellj 896 55 12ms 30 Oct 2025 214th ovs-code 🇩🇪 896 55 13ms 31 Oct 2025 214th bitsandbeyond 🇳🇱 896 55 11ms 1 Nov 2025 214th GolfingSuccess 🇬🇷 896 55 13ms 3 Nov 2025 214th Mukundan314 896 55 11ms 15 Nov 2025 214th m-tkach 🇺🇦 896 55 11ms 24 Nov 2025 214th snoozingnewt 🇨🇦 896 55 12ms 23 days ago 214th luuumine 🇫🇷 896 55 12ms 23 days ago 214th dokutan 896 55 13ms 21 days ago 214th xsot 🇸🇬 896 55 11ms 20 days ago 214th vhoulbreque 🇫🇷 896 55 13ms 20 days ago 214th jared-hughes 896 55 11ms 18 days ago 214th duckyluuk 🇳🇱 896 55 12ms 18 days ago 214th GrayJoKing 🇦🇺 896 55 12ms 17 days ago 214th enigma 896 55 18ms 2 days ago 214th taifu 896 55 33ms 28 hours ago 231st sean-niemann 🇺🇸 896 66 7ms 4 days ago 232nd GolfingSuccess 🇬🇷 896 92 275ms 30 Oct 2025 232nd edsrzf 🇳🇿 896 92 264ms 31 Oct 2025 232nd KasperKivimaeki 🇫🇮 896 92 280ms 31 Oct 2025 235th kg583 🇺🇸 895 78 58ms 30 Oct 2025 235th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 237th m-tkach 🇺🇦 895 95 2ms 21 days ago 238th ovs-code 🇩🇪 894 50 55ms 23 days ago 238th sean-niemann 🇺🇸 894 50 41ms 20 days ago 240th sean-niemann 🇺🇸 892 86 26ms 20 days ago First Prev 161–240 of 1,104 Next Last