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 81st sean-niemann 🇺🇸 925 69 397ms 31 Oct 2025 81st stefangimmillaro 925 69 392ms 31 Oct 2025 81st GolfingSuccess 🇬🇷 925 69 389ms 31 Oct 2025 81st AdrienHache 🇫🇷 925 69 405ms 1 Nov 2025 81st pardouin 🇫🇷 925 69 388ms 22 days ago 81st DialFrost 🇸🇬 925 69 413ms 20 days ago 81st KasperKivimaeki 🇫🇮 925 69 383ms 19 days ago 81st JayXon 🇺🇸 925 69 406ms 2 days ago 89th rucin93 🇵🇱 925 76 388ms 30 Oct 2025 89th GolfingSuccess 🇬🇷 925 76 444ms 30 Oct 2025 89th stefangimmillaro 925 76 431ms 31 Oct 2025 89th sean-niemann 🇺🇸 925 76 479ms 31 Oct 2025 89th edsrzf 🇳🇿 925 76 553ms 31 Oct 2025 89th KasperKivimaeki 🇫🇮 925 76 492ms 1 Nov 2025 89th namelessiw 925 76 367ms 23 days ago 89th DialFrost 🇸🇬 925 76 361ms 20 days ago 89th JayXon 🇺🇸 925 76 526ms 2 days ago 98th 2bular 924 35 4ms 1 Nov 2025 99th bitsandbeyond 🇳🇱 924 46 3ms 2 Nov 2025 99th sean-niemann 🇺🇸 924 46 3ms 20 days ago 99th xsot 🇸🇬 924 46 2ms 19 days ago 102nd ovs-code 🇩🇪 924 57 66ms 15 days ago 103rd rucin93 🇵🇱 924 66 2ms 30 Oct 2025 103rd KasperKivimaeki 🇫🇮 924 66 2ms 30 Oct 2025 103rd saito-ta 🇯🇵 924 66 2ms 5 Nov 2025 103rd DialFrost 🇸🇬 924 66 2ms 20 days ago 103rd AdrienHache 🇫🇷 924 66 2ms 19 days ago 108th bitsandbeyond 🇳🇱 923 52 706ms 11 Nov 2025 108th GolfingSuccess 🇬🇷 923 52 743ms 21 days ago 108th sean-niemann 🇺🇸 923 52 762ms 20 days ago 111th JayXon 🇺🇸 923 59 127ms 2 hours ago 112th edsrzf 🇳🇿 923 73 9ms 21 days ago 113th stefangimmillaro 921 48 8ms 31 Oct 2025 113th rucin93 🇵🇱 921 48 9ms 31 Oct 2025 113th bitsandbeyond 🇳🇱 921 48 8ms 31 Oct 2025 113th GolfingSuccess 🇬🇷 921 48 8ms 3 Nov 2025 113th ovs-code 🇩🇪 921 48 8ms 23 days ago 113th sean-niemann 🇺🇸 921 48 9ms 20 days ago 113th xsot 🇸🇬 921 48 9ms 19 days ago 120th stefangimmillaro 919 50 750ms 30 Oct 2025 120th pardouin 🇫🇷 919 50 774ms 1 Nov 2025 120th sean-niemann 🇺🇸 919 50 813ms 20 days ago 123rd sean-niemann 🇺🇸 919 84 81ms 20 days ago 123rd JayXon 🇺🇸 919 84 76ms 25 hours ago 125th GrayJoKing 🇦🇺 918 47 87ms 18 days ago 126th rucin93 🇵🇱 918 55 7ms 30 Oct 2025 127th JayXon 🇺🇸 918 62 3ms 25 hours ago 128th GolfingSuccess 🇬🇷 918 83 8ms 3 Nov 2025 129th rucin93 🇵🇱 917 71 116ms 30 Oct 2025 129th kumavale 917 71 124ms 31 Oct 2025 129th stefangimmillaro 917 71 119ms 31 Oct 2025 129th CaedenHarper 🇨🇦 917 71 121ms 22 days ago 129th edsrzf 🇳🇿 917 71 115ms 21 days ago 129th sean-niemann 🇺🇸 917 71 119ms 20 days ago 129th DialFrost 🇸🇬 917 71 119ms 20 days ago 129th JayXon 🇺🇸 917 71 132ms 2 days ago 137th sean-niemann 🇺🇸 916 65 117ms 20 days ago 137th JayXon 🇺🇸 916 65 103ms 25 hours ago 139th JayXon 🇺🇸 916 90 283ms 2 days ago 139th sean-niemann 🇺🇸 916 90 280ms 30 hours ago 141st JayXon 🇺🇸 915 64 1,579ms 2 hours ago 142nd Shanethegamer 🇺🇸 914 84 27ms 2 Nov 2025 142nd m-tkach 🇺🇦 914 84 27ms 20 days ago 144th kg583 🇺🇸 913 52 365ms 30 Oct 2025 144th sean-niemann 🇺🇸 913 52 390ms 20 days ago 146th xnor-gate 913 54 11ms 23 days ago 146th hellopir2 913 54 10ms 23 days ago 146th rucin93 🇵🇱 913 54 12ms 13 days ago 146th emgordon154 913 54 12ms 2 days ago 150th stefangimmillaro 913 55 82ms 31 Oct 2025 151st pardouin 🇫🇷 913 77 357ms 22 days ago 152nd Kacarott 🇦🇺 913 80 69ms 22 days ago 152nd ovs-code 🇩🇪 913 80 101ms 22 days ago 154th pardouin 🇫🇷 912 67 4,035ms 1 Nov 2025 154th bitsandbeyond 🇳🇱 912 67 4,371ms 2 Nov 2025 156th bitsandbeyond 🇳🇱 911 70 397ms 1 Nov 2025 156th namelessiw 911 70 417ms 2 Nov 2025 158th stefangimmillaro 911 75 41ms 31 Oct 2025 159th edsrzf 🇳🇿 910 65 5ms 4 days ago 160th Mukundan314 910 67 2ms 23 Nov 2025 First Prev 81–160 of 1,102 Next Last