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 159th Alex-x90 🇺🇸 911 67 2ms 22 days ago 162nd bitsandbeyond 🇳🇱 911 70 392ms 1 Nov 2025 162nd namelessiw 911 70 407ms 2 Nov 2025 164th stefangimmillaro 911 75 41ms 31 Oct 2025 165th edsrzf 🇳🇿 910 65 5ms 8 days ago 166th kg583 🇺🇸 910 74 11ms 30 Oct 2025 167th sean-niemann 🇺🇸 910 81 388ms 31 Oct 2025 167th KasperKivimaeki 🇫🇮 910 81 367ms 31 Oct 2025 167th ovs-code 🇩🇪 910 81 387ms 31 Oct 2025 167th rucin93 🇵🇱 910 81 383ms 31 Oct 2025 167th edsrzf 🇳🇿 910 81 357ms 25 days ago 167th DialFrost 🇸🇬 910 81 363ms 24 days ago 167th JayXon 🇺🇸 910 81 467ms 5 days ago 174th IanUtley 909 70 10ms 7 Nov 2025 174th annaproxy 909 70 10ms 24 days ago 176th GolfingSuccess 🇬🇷 909 85 60ms 30 Oct 2025 176th rucin93 🇵🇱 909 85 61ms 30 Oct 2025 176th KasperKivimaeki 🇫🇮 909 85 61ms 31 Oct 2025 176th bitsandbeyond 🇳🇱 909 85 60ms 1 Nov 2025 176th ovs-code 🇩🇪 909 85 53ms 3 Nov 2025 176th pardouin 🇫🇷 909 85 56ms 27 days ago 176th m-tkach 🇺🇦 909 85 52ms 25 days ago 176th DialFrost 🇸🇬 909 85 62ms 24 days ago 176th AdrienHache 🇫🇷 909 85 71ms 24 days ago 176th xsot 🇸🇬 909 85 59ms 24 days ago 186th kg583 🇺🇸 908 65 5ms 30 Oct 2025 186th edsrzf 🇳🇿 908 65 4ms 30 Oct 2025 188th stefangimmillaro 907 91 268ms 1 Nov 2025 188th pardouin 🇫🇷 907 91 251ms 27 days ago 190th Natanaelel 🇸🇪 906 32 39ms 33 hours ago 191st lukegustafson 🇺🇸 906 48 131ms 25 days ago 192nd sean-niemann 🇺🇸 906 69 40ms 25 days ago 193rd ovs-code 🇩🇪 906 74 120ms 28 Nov 2025 194th luuumine 🇫🇷 904 72 117ms 23 days ago 194th emgordon154 904 72 132ms 5 days ago 196th emgordon154 903 67 5ms 23 Nov 2025 197th edsrzf 🇳🇿 903 69 82ms 9 days ago 198th emgordon154 903 87 103ms 22 days ago 199th targrik 902 56 5ms 30 Oct 2025 200th bitsandbeyond 🇳🇱 902 66 104ms 2 Nov 2025 200th stefangimmillaro 902 66 124ms 4 Nov 2025 202nd GrayJoKing 🇦🇺 902 79 9ms 21 days ago 203rd DialFrost 🇸🇬 901 71 18ms 4 days ago 204th CaedenHarper 🇨🇦 901 78 416ms 27 days ago 204th m-tkach 🇺🇦 901 78 657ms 25 days ago 206th jkelly467 900 68 3,209ms 25 days ago 207th MeWhenI 🇻🇦 899 53 3ms 23 Nov 2025 208th luuumine 🇫🇷 899 86 53ms 15 days ago 209th edsrzf 🇳🇿 898 59 2ms 31 Oct 2025 209th CaedenHarper 🇨🇦 898 59 2ms 26 days ago 209th GrayJoKing 🇦🇺 898 59 2ms 22 days ago 212th CaedenHarper 🇨🇦 898 68 2ms 27 days ago 212th m-tkach 🇺🇦 898 68 2ms 25 days ago 214th edsrzf 🇳🇿 898 78 3ms 25 days ago 215th saito-ta 🇯🇵 897 51 583ms 31 Oct 2025 215th MeWhenI 🇻🇦 897 51 542ms 27 days ago 217th GolfingSuccess 🇬🇷 897 92 275ms 30 Oct 2025 217th edsrzf 🇳🇿 897 92 264ms 31 Oct 2025 217th KasperKivimaeki 🇫🇮 897 92 280ms 31 Oct 2025 220th emgordon154 896 53 421ms 6 days ago 221st stefangimmillaro 896 55 11ms 30 Oct 2025 221st bricknellj 896 55 12ms 30 Oct 2025 221st ovs-code 🇩🇪 896 55 13ms 31 Oct 2025 221st bitsandbeyond 🇳🇱 896 55 11ms 1 Nov 2025 221st GolfingSuccess 🇬🇷 896 55 13ms 3 Nov 2025 221st Mukundan314 896 55 11ms 15 Nov 2025 221st m-tkach 🇺🇦 896 55 11ms 24 Nov 2025 221st snoozingnewt 🇨🇦 896 55 12ms 28 Nov 2025 221st luuumine 🇫🇷 896 55 12ms 28 Nov 2025 221st dokutan 896 55 13ms 25 days ago 221st xsot 🇸🇬 896 55 11ms 24 days ago 221st vhoulbreque 🇫🇷 896 55 13ms 24 days ago 221st jared-hughes 896 55 11ms 22 days ago 221st duckyluuk 🇳🇱 896 55 12ms 22 days ago 221st GrayJoKing 🇦🇺 896 55 12ms 21 days ago 221st enigma 896 55 14ms 6 days ago 221st taifu 896 55 25ms 5 days ago 238th sean-niemann 🇺🇸 896 66 5ms 8 days ago 239th kg583 🇺🇸 895 78 50ms 30 Oct 2025 239th edsrzf 🇳🇿 895 78 41ms 31 Oct 2025 First Prev 161–240 of 1,119 Next Last