The Calendar hole will go live in approximately 10 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 161st kg583 🇺🇸 910 74 11ms 30 Oct 2025 162nd IanUtley 909 70 10ms 7 Nov 2025 162nd annaproxy 909 70 10ms 18 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 19 days ago 166th DialFrost 🇸🇬 908 81 363ms 19 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 21 days ago 172nd m-tkach 🇺🇦 907 85 76ms 19 days ago 172nd DialFrost 🇸🇬 907 85 62ms 19 days ago 172nd AdrienHache 🇫🇷 907 85 71ms 18 days ago 172nd xsot 🇸🇬 907 85 64ms 18 days ago 182nd lukegustafson 🇺🇸 906 48 131ms 19 days ago 183rd sean-niemann 🇺🇸 906 69 40ms 19 days ago 184th ovs-code 🇩🇪 906 74 120ms 22 days ago 185th stefangimmillaro 906 91 268ms 1 Nov 2025 185th pardouin 🇫🇷 906 91 251ms 21 days ago 187th luuumine 🇫🇷 904 72 117ms 17 days ago 187th emgordon154 904 72 140ms 2 hours ago 189th emgordon154 903 67 5ms 27 days ago 190th edsrzf 🇳🇿 903 69 82ms 4 days ago 191st emgordon154 903 87 103ms 16 days ago 192nd targrik 902 56 8ms 30 Oct 2025 193rd GrayJoKing 🇦🇺 902 79 9ms 15 days ago 194th CaedenHarper 🇨🇦 901 78 416ms 21 days ago 194th m-tkach 🇺🇦 901 78 657ms 19 days ago 196th bitsandbeyond 🇳🇱 900 66 108ms 2 Nov 2025 196th stefangimmillaro 900 66 124ms 4 Nov 2025 198th MeWhenI 🇻🇦 899 53 3ms 27 days ago 199th jkelly467 899 68 3,920ms 19 days ago 200th sean-niemann 🇺🇸 899 74 21ms 4 hours ago 201st sean-niemann 🇺🇸 898 67 1,225ms 19 days ago 202nd edsrzf 🇳🇿 898 78 3ms 20 days ago 203rd saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 203rd MeWhenI 🇻🇦 897 51 542ms 21 days ago 205th CaedenHarper 🇨🇦 897 68 2ms 21 days ago 205th m-tkach 🇺🇦 897 68 2ms 19 days ago 207th luuumine 🇫🇷 897 86 71ms 9 days ago 208th emgordon154 896 53 421ms 20 hours ago 209th stefangimmillaro 896 55 11ms 30 Oct 2025 209th bricknellj 896 55 12ms 30 Oct 2025 209th ovs-code 🇩🇪 896 55 13ms 31 Oct 2025 209th bitsandbeyond 🇳🇱 896 55 11ms 1 Nov 2025 209th GolfingSuccess 🇬🇷 896 55 13ms 3 Nov 2025 209th Mukundan314 896 55 11ms 15 Nov 2025 209th m-tkach 🇺🇦 896 55 11ms 26 days ago 209th snoozingnewt 🇨🇦 896 55 12ms 22 days ago 209th luuumine 🇫🇷 896 55 12ms 22 days ago 209th dokutan 896 55 13ms 19 days ago 209th xsot 🇸🇬 896 55 11ms 18 days ago 209th vhoulbreque 🇫🇷 896 55 13ms 18 days ago 209th jared-hughes 896 55 11ms 17 days ago 209th duckyluuk 🇳🇱 896 55 12ms 16 days ago 209th GrayJoKing 🇦🇺 896 55 12ms 15 days ago 209th enigma 896 55 18ms 10 hours ago 225th edsrzf 🇳🇿 896 59 2ms 31 Oct 2025 225th CaedenHarper 🇨🇦 896 59 2ms 20 days ago 225th GrayJoKing 🇦🇺 896 59 2ms 17 days ago 228th sean-niemann 🇺🇸 896 66 7ms 3 days ago 229th GolfingSuccess 🇬🇷 896 92 275ms 30 Oct 2025 229th edsrzf 🇳🇿 896 92 264ms 31 Oct 2025 229th KasperKivimaeki 🇫🇮 896 92 280ms 31 Oct 2025 232nd kg583 🇺🇸 895 78 58ms 30 Oct 2025 232nd edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 234th m-tkach 🇺🇦 895 95 2ms 19 days ago 235th ovs-code 🇩🇪 894 50 55ms 22 days ago 235th sean-niemann 🇺🇸 894 50 41ms 19 days ago 237th sean-niemann 🇺🇸 892 86 26ms 18 days ago 238th sean-niemann 🇺🇸 891 89 36ms 19 days ago 239th CaedenHarper 🇨🇦 889 54 724ms 20 days ago 240th Shanethegamer 🇺🇸 889 79 462ms 4 Nov 2025 First Prev 161–240 of 1,092 Next Last