The Calendar hole will go live in approximately 5 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 22 days ago 160th Alex-x90 🇺🇸 910 67 2ms 22 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 25 days ago 164th DialFrost 🇸🇬 910 81 363ms 24 days ago 164th JayXon 🇺🇸 910 81 467ms 5 days ago 171st IanUtley 909 70 10ms 7 Nov 2025 171st annaproxy 909 70 10ms 24 days ago 173rd kg583 🇺🇸 908 65 5ms 30 Oct 2025 173rd edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 175th GolfingSuccess 🇬🇷 908 85 60ms 30 Oct 2025 175th rucin93 🇵🇱 908 85 61ms 30 Oct 2025 175th KasperKivimaeki 🇫🇮 908 85 61ms 31 Oct 2025 175th bitsandbeyond 🇳🇱 908 85 60ms 1 Nov 2025 175th ovs-code 🇩🇪 908 85 53ms 3 Nov 2025 175th pardouin 🇫🇷 908 85 56ms 26 days ago 175th m-tkach 🇺🇦 908 85 52ms 24 days ago 175th DialFrost 🇸🇬 908 85 62ms 24 days ago 175th AdrienHache 🇫🇷 908 85 71ms 23 days ago 175th xsot 🇸🇬 908 85 59ms 23 days ago 185th stefangimmillaro 907 91 268ms 1 Nov 2025 185th pardouin 🇫🇷 907 91 251ms 26 days ago 187th Natanaelel 🇸🇪 906 32 39ms 20 hours ago 188th lukegustafson 🇺🇸 906 48 131ms 24 days ago 189th sean-niemann 🇺🇸 906 69 40ms 24 days ago 190th ovs-code 🇩🇪 906 74 120ms 27 days ago 191st luuumine 🇫🇷 904 72 117ms 22 days ago 191st emgordon154 904 72 132ms 5 days ago 193rd emgordon154 903 67 5ms 23 Nov 2025 194th edsrzf 🇳🇿 903 69 82ms 9 days ago 195th emgordon154 903 87 103ms 22 days ago 196th targrik 902 56 5ms 30 Oct 2025 197th bitsandbeyond 🇳🇱 902 66 104ms 2 Nov 2025 197th stefangimmillaro 902 66 124ms 4 Nov 2025 199th GrayJoKing 🇦🇺 902 79 9ms 20 days ago 200th DialFrost 🇸🇬 901 71 18ms 4 days ago 201st CaedenHarper 🇨🇦 901 78 416ms 27 days ago 201st m-tkach 🇺🇦 901 78 657ms 24 days ago 203rd jkelly467 900 68 3,209ms 24 days ago 204th MeWhenI 🇻🇦 899 53 3ms 23 Nov 2025 205th edsrzf 🇳🇿 898 78 3ms 25 days ago 206th luuumine 🇫🇷 898 86 53ms 15 days ago 207th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 207th MeWhenI 🇻🇦 897 51 542ms 27 days ago 209th edsrzf 🇳🇿 897 59 2ms 31 Oct 2025 209th CaedenHarper 🇨🇦 897 59 2ms 26 days ago 209th GrayJoKing 🇦🇺 897 59 2ms 22 days ago 212th CaedenHarper 🇨🇦 897 68 2ms 27 days ago 212th m-tkach 🇺🇦 897 68 2ms 24 days ago 214th GolfingSuccess 🇬🇷 897 92 275ms 30 Oct 2025 214th edsrzf 🇳🇿 897 92 264ms 31 Oct 2025 214th KasperKivimaeki 🇫🇮 897 92 280ms 31 Oct 2025 217th emgordon154 896 53 421ms 6 days ago 218th stefangimmillaro 896 55 11ms 30 Oct 2025 218th bricknellj 896 55 12ms 30 Oct 2025 218th ovs-code 🇩🇪 896 55 13ms 31 Oct 2025 218th bitsandbeyond 🇳🇱 896 55 11ms 1 Nov 2025 218th GolfingSuccess 🇬🇷 896 55 13ms 3 Nov 2025 218th Mukundan314 896 55 11ms 15 Nov 2025 218th m-tkach 🇺🇦 896 55 11ms 24 Nov 2025 218th snoozingnewt 🇨🇦 896 55 12ms 27 days ago 218th luuumine 🇫🇷 896 55 12ms 27 days ago 218th dokutan 896 55 13ms 24 days ago 218th xsot 🇸🇬 896 55 11ms 23 days ago 218th vhoulbreque 🇫🇷 896 55 13ms 23 days ago 218th jared-hughes 896 55 11ms 22 days ago 218th duckyluuk 🇳🇱 896 55 12ms 21 days ago 218th GrayJoKing 🇦🇺 896 55 12ms 20 days ago 218th enigma 896 55 14ms 5 days ago 218th taifu 896 55 25ms 4 days ago 235th sean-niemann 🇺🇸 896 66 5ms 8 days ago 236th kg583 🇺🇸 895 78 50ms 30 Oct 2025 236th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 238th m-tkach 🇺🇦 895 95 2ms 24 days ago 239th ovs-code 🇩🇪 894 50 37ms 27 days ago 239th sean-niemann 🇺🇸 894 50 43ms 24 days ago First Prev 161–240 of 1,114 Next Last