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 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 sean-niemann 🇺🇸 908 81 388ms 31 Oct 2025 161st KasperKivimaeki 🇫🇮 908 81 367ms 31 Oct 2025 161st ovs-code 🇩🇪 908 81 387ms 31 Oct 2025 161st rucin93 🇵🇱 908 81 383ms 31 Oct 2025 161st edsrzf 🇳🇿 908 81 357ms 18 days ago 161st DialFrost 🇸🇬 908 81 363ms 18 days ago 167th GolfingSuccess 🇬🇷 907 85 76ms 30 Oct 2025 167th rucin93 🇵🇱 907 85 69ms 30 Oct 2025 167th KasperKivimaeki 🇫🇮 907 85 80ms 31 Oct 2025 167th bitsandbeyond 🇳🇱 907 85 60ms 1 Nov 2025 167th ovs-code 🇩🇪 907 85 71ms 3 Nov 2025 167th pardouin 🇫🇷 907 85 78ms 20 days ago 167th m-tkach 🇺🇦 907 85 76ms 18 days ago 167th DialFrost 🇸🇬 907 85 62ms 18 days ago 167th AdrienHache 🇫🇷 907 85 71ms 17 days ago 167th xsot 🇸🇬 907 85 64ms 17 days ago 177th lukegustafson 🇺🇸 906 48 131ms 18 days ago 178th sean-niemann 🇺🇸 906 69 40ms 18 days ago 179th ovs-code 🇩🇪 906 74 120ms 21 days ago 180th sean-niemann 🇺🇸 906 91 265ms 31 Oct 2025 180th stefangimmillaro 906 91 268ms 1 Nov 2025 180th pardouin 🇫🇷 906 91 251ms 20 days ago 183rd luuumine 🇫🇷 904 72 117ms 16 days ago 184th emgordon154 903 67 5ms 26 days ago 185th edsrzf 🇳🇿 903 69 82ms 3 days ago 186th emgordon154 903 87 103ms 16 days ago 187th targrik 902 56 8ms 30 Oct 2025 188th GrayJoKing 🇦🇺 902 79 9ms 14 days ago 189th bitsandbeyond 🇳🇱 900 66 108ms 2 Nov 2025 189th stefangimmillaro 900 66 124ms 4 Nov 2025 191st CaedenHarper 🇨🇦 900 78 416ms 21 days ago 191st m-tkach 🇺🇦 900 78 657ms 18 days ago 193rd MeWhenI 🇻🇦 898 53 3ms 27 days ago 194th sean-niemann 🇺🇸 898 67 1,225ms 18 days ago 195th jkelly467 898 68 3,920ms 18 days ago 196th edsrzf 🇳🇿 898 78 3ms 19 days ago 197th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 197th MeWhenI 🇻🇦 897 51 542ms 20 days ago 199th luuumine 🇫🇷 897 86 71ms 8 days ago 200th stefangimmillaro 896 55 11ms 30 Oct 2025 200th bricknellj 896 55 12ms 30 Oct 2025 200th ovs-code 🇩🇪 896 55 13ms 31 Oct 2025 200th bitsandbeyond 🇳🇱 896 55 11ms 1 Nov 2025 200th GolfingSuccess 🇬🇷 896 55 13ms 3 Nov 2025 200th Mukundan314 896 55 11ms 15 Nov 2025 200th emgordon154 896 55 11ms 26 days ago 200th m-tkach 🇺🇦 896 55 11ms 25 days ago 200th snoozingnewt 🇨🇦 896 55 12ms 21 days ago 200th luuumine 🇫🇷 896 55 12ms 21 days ago 200th dokutan 896 55 13ms 18 days ago 200th xsot 🇸🇬 896 55 11ms 17 days ago 200th vhoulbreque 🇫🇷 896 55 13ms 17 days ago 200th jared-hughes 896 55 11ms 16 days ago 200th duckyluuk 🇳🇱 896 55 12ms 15 days ago 200th GrayJoKing 🇦🇺 896 55 12ms 14 days ago 216th edsrzf 🇳🇿 896 59 2ms 31 Oct 2025 216th CaedenHarper 🇨🇦 896 59 2ms 20 days ago 216th GrayJoKing 🇦🇺 896 59 2ms 16 days ago 219th sean-niemann 🇺🇸 896 66 7ms 2 days ago 220th CaedenHarper 🇨🇦 896 68 2ms 21 days ago 220th m-tkach 🇺🇦 896 68 2ms 18 days ago 222nd GolfingSuccess 🇬🇷 896 92 275ms 30 Oct 2025 222nd edsrzf 🇳🇿 896 92 264ms 31 Oct 2025 222nd KasperKivimaeki 🇫🇮 896 92 280ms 31 Oct 2025 225th kg583 🇺🇸 895 78 58ms 30 Oct 2025 225th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 227th m-tkach 🇺🇦 895 95 2ms 18 days ago 228th ovs-code 🇩🇪 894 50 55ms 21 days ago 228th sean-niemann 🇺🇸 894 50 41ms 18 days ago 230th sean-niemann 🇺🇸 892 86 26ms 18 days ago 231st DialFrost 🇸🇬 891 79 18ms 7 hours ago 232nd sean-niemann 🇺🇸 891 89 36ms 18 days ago 233rd CaedenHarper 🇨🇦 889 54 724ms 19 days ago 234th Shanethegamer 🇺🇸 889 79 462ms 4 Nov 2025 234th MeWhenI 🇻🇦 889 79 435ms 21 Nov 2025 234th snoozingnewt 🇨🇦 889 79 439ms 21 days ago 237th sean-niemann 🇺🇸 887 49 137ms 18 days ago 238th edsrzf 🇳🇿 887 67 101ms 31 Oct 2025 238th DialFrost 🇸🇬 887 67 104ms 18 days ago 240th MeWhenI 🇻🇦 887 79 7ms 26 days ago First Prev 161–240 of 1,081 Next Last