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 79th GolfingSuccess 🇬🇷 925 69 389ms 31 Oct 2025 79th AdrienHache 🇫🇷 925 69 405ms 1 Nov 2025 79th pardouin 🇫🇷 925 69 388ms 21 days ago 79th DialFrost 🇸🇬 925 69 413ms 19 days ago 79th KasperKivimaeki 🇫🇮 925 69 383ms 19 days ago 79th JayXon 🇺🇸 925 69 406ms 32 hours ago 87th rucin93 🇵🇱 925 76 388ms 30 Oct 2025 87th GolfingSuccess 🇬🇷 925 76 444ms 30 Oct 2025 87th stefangimmillaro 925 76 431ms 31 Oct 2025 87th sean-niemann 🇺🇸 925 76 479ms 31 Oct 2025 87th edsrzf 🇳🇿 925 76 553ms 31 Oct 2025 87th KasperKivimaeki 🇫🇮 925 76 492ms 1 Nov 2025 87th namelessiw 925 76 367ms 23 days ago 87th DialFrost 🇸🇬 925 76 361ms 19 days ago 87th JayXon 🇺🇸 925 76 526ms 32 hours ago 96th 2bular 924 35 4ms 1 Nov 2025 97th bitsandbeyond 🇳🇱 924 46 3ms 2 Nov 2025 97th sean-niemann 🇺🇸 924 46 3ms 19 days ago 97th xsot 🇸🇬 924 46 2ms 19 days ago 100th ovs-code 🇩🇪 924 57 66ms 14 days ago 101st rucin93 🇵🇱 924 66 2ms 30 Oct 2025 101st KasperKivimaeki 🇫🇮 924 66 2ms 30 Oct 2025 101st saito-ta 🇯🇵 924 66 2ms 5 Nov 2025 101st DialFrost 🇸🇬 924 66 2ms 19 days ago 101st AdrienHache 🇫🇷 924 66 2ms 19 days ago 106th bitsandbeyond 🇳🇱 923 52 706ms 11 Nov 2025 106th GolfingSuccess 🇬🇷 923 52 743ms 21 days ago 106th sean-niemann 🇺🇸 923 52 762ms 19 days ago 109th edsrzf 🇳🇿 923 73 9ms 20 days ago 110th stefangimmillaro 921 48 8ms 31 Oct 2025 110th rucin93 🇵🇱 921 48 9ms 31 Oct 2025 110th bitsandbeyond 🇳🇱 921 48 8ms 31 Oct 2025 110th GolfingSuccess 🇬🇷 921 48 8ms 3 Nov 2025 110th ovs-code 🇩🇪 921 48 8ms 22 days ago 110th sean-niemann 🇺🇸 921 48 9ms 19 days ago 110th xsot 🇸🇬 921 48 9ms 19 days ago 117th stefangimmillaro 919 50 750ms 30 Oct 2025 117th pardouin 🇫🇷 919 50 774ms 1 Nov 2025 117th sean-niemann 🇺🇸 919 50 813ms 19 days ago 120th sean-niemann 🇺🇸 919 84 81ms 19 days ago 120th JayXon 🇺🇸 919 84 76ms 9 hours ago 122nd GrayJoKing 🇦🇺 918 47 87ms 17 days ago 123rd rucin93 🇵🇱 918 55 7ms 30 Oct 2025 124th Shanethegamer 🇺🇸 918 62 291ms 3 Nov 2025 124th MeWhenI 🇻🇦 918 62 120ms 27 days ago 124th edsrzf 🇳🇿 918 62 181ms 20 days ago 124th JayXon 🇺🇸 918 62 3ms 8 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 21 days ago 129th edsrzf 🇳🇿 917 71 115ms 20 days ago 129th sean-niemann 🇺🇸 917 71 119ms 19 days ago 129th DialFrost 🇸🇬 917 71 119ms 19 days ago 129th JayXon 🇺🇸 917 71 132ms 42 hours ago 137th sean-niemann 🇺🇸 916 65 117ms 19 days ago 137th JayXon 🇺🇸 916 65 103ms 9 hours ago 139th JayXon 🇺🇸 916 90 283ms 34 hours ago 139th sean-niemann 🇺🇸 916 90 280ms 14 hours ago 141st Shanethegamer 🇺🇸 914 84 27ms 2 Nov 2025 141st m-tkach 🇺🇦 914 84 27ms 20 days ago 143rd kg583 🇺🇸 913 52 365ms 30 Oct 2025 143rd sean-niemann 🇺🇸 913 52 390ms 19 days ago 145th xnor-gate 913 54 11ms 22 days ago 145th hellopir2 913 54 10ms 22 days ago 145th rucin93 🇵🇱 913 54 12ms 13 days ago 145th emgordon154 913 54 12ms 33 hours ago 149th pardouin 🇫🇷 913 77 357ms 21 days ago 150th Kacarott 🇦🇺 913 80 69ms 22 days ago 150th ovs-code 🇩🇪 913 80 101ms 22 days ago 152nd pardouin 🇫🇷 912 67 4,035ms 1 Nov 2025 152nd bitsandbeyond 🇳🇱 912 67 4,371ms 2 Nov 2025 154th stefangimmillaro 911 55 82ms 31 Oct 2025 155th Shanethegamer 🇺🇸 911 66 1,247ms 3 Nov 2025 155th edsrzf 🇳🇿 911 66 1,434ms 20 days ago 157th bitsandbeyond 🇳🇱 911 70 397ms 1 Nov 2025 157th namelessiw 911 70 417ms 2 Nov 2025 159th stefangimmillaro 911 75 41ms 31 Oct 2025 160th edsrzf 🇳🇿 910 65 5ms 3 days ago First Prev 81–160 of 1,098 Next Last