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 476th inventshah 795 62 10ms 11 days ago 476th SB-945 795 62 12ms 19 hours ago 483rd Shanethegamer 🇺🇸 794 92 73ms 3 Nov 2025 483rd blaztoma 🇱🇹 794 92 64ms 18 days ago 485th albanian-laundromat 793 77 2,962ms 26 days ago 486th neosimsim 793 96 8ms 27 days ago 487th Shanethegamer 🇺🇸 792 62 94ms 3 Nov 2025 488th Shanethegamer 🇺🇸 791 55 133ms 4 Nov 2025 488th emgordon154 791 55 141ms 59 mins ago 490th albanian-laundromat 791 60 374ms 27 days ago 491st MeWhenI 🇻🇦 791 79 39ms 27 days ago 492nd albanian-laundromat 790 74 3ms 27 days ago 493rd MeWhenI 🇻🇦 788 57 311ms 26 days ago 493rd CaedenHarper 🇨🇦 788 57 275ms 20 days ago 493rd bitsandbeyond 🇳🇱 788 57 203ms 19 days ago 496th dokutan 787 75 4ms 18 days ago 497th edsrzf 🇳🇿 786 93 66ms 18 days ago 498th Shanethegamer 🇺🇸 786 100 112ms 3 Nov 2025 499th Natanaelel 🇸🇪 785 55 127ms 4 Nov 2025 500th CaedenHarper 🇨🇦 785 57 36ms 21 days ago 501st ovs-code 🇩🇪 785 77 6ms 20 days ago 502nd bitsandbeyond 🇳🇱 785 87 40ms 31 Oct 2025 502nd blaztoma 🇱🇹 785 87 42ms 18 days ago 504th MeWhenI 🇻🇦 783 62 1ms 27 days ago 505th MeWhenI 🇻🇦 779 63 96ms 26 days ago 506th albanian-laundromat 778 90 4ms 6 days ago 507th vhoulbreque 🇫🇷 778 101 110ms 17 days ago 508th emgordon154 778 106 265ms 24 days ago 509th MeWhenI 🇻🇦 776 56 127ms 27 days ago 509th dokutan 776 56 130ms 18 days ago 511th albanian-laundromat 776 88 41ms 26 days ago 512th Shanethegamer 🇺🇸 774 62 241ms 4 Nov 2025 512th albanian-laundromat 774 62 701ms 26 days ago 514th emgordon154 774 87 11ms 26 days ago 514th snoozingnewt 🇨🇦 774 87 10ms 19 days ago 516th dokutan 772 77 107ms 14 days ago 517th dokutan 771 58 43ms 18 days ago 518th DialFrost 🇸🇬 771 65 582ms 18 days ago 519th rucin93 🇵🇱 770 102 119ms 21 days ago 519th madex 🇩🇪 770 102 107ms 18 days ago 521st albanian-laundromat 770 103 31ms 26 days ago 522nd HumanoidCPU 769 74 129ms 21 days ago 522nd Ripick 769 74 137ms 20 days ago 524th CaedenHarper 🇨🇦 767 64 96ms 20 days ago 525th HumanoidCPU 766 62 355ms 21 days ago 525th Yewzir 🇧🇪 766 62 374ms 19 days ago 527th MeWhenI 🇻🇦 766 77 4ms 26 days ago 528th CaedenHarper 🇨🇦 766 96 153ms 21 days ago 529th albanian-laundromat 764 92 349ms 27 days ago 530th AlephSquirrel 763 38 63ms 19 days ago 531st emgordon154 763 80 3,931ms 19 days ago 532nd madex 🇩🇪 762 80 2ms 18 days ago 533rd dokutan 762 82 38ms 21 days ago 534th blaztoma 🇱🇹 761 63 256ms 18 days ago 535th albanian-laundromat 759 75 128ms 24 days ago 536th albanian-laundromat 758 64 2ms 27 days ago 537th albanian-laundromat 757 89 10ms 19 days ago 538th dokutan 754 61 783ms 21 days ago 539th dokutan 754 62 6ms 6 days ago 540th MeWhenI 🇻🇦 753 97 70ms 26 days ago 541st DialFrost 🇸🇬 752 136 436ms 16 days ago 542nd bitsandbeyond 🇳🇱 751 83 77ms 31 Oct 2025 543rd CaedenHarper 🇨🇦 750 58 125ms 20 days ago 544th duckyluuk 🇳🇱 750 95 8ms 30 Oct 2025 545th dokutan 749 59 9ms 21 days ago 546th bitsandbeyond 🇳🇱 748 90 10ms 31 Oct 2025 547th HumanoidCPU 747 102 8ms 19 days ago 547th bitsandbeyond 🇳🇱 747 102 9ms 19 days ago 549th CaedenHarper 🇨🇦 746 157 2,347ms 20 days ago 550th albanian-laundromat 744 64 2ms 27 days ago 551st MeWhenI 🇻🇦 742 71 87ms 26 days ago 551st snoozingnewt 🇨🇦 742 71 91ms 21 days ago 553rd emgordon154 741 138 455ms 26 days ago 553rd Shanethegamer 🇺🇸 741 138 432ms 16 days ago 555th blaztoma 🇱🇹 740 91 10ms 18 days ago 556th MeWhenI 🇻🇦 739 115 2ms 26 days ago 557th iczelia 🇩🇪 737 60 9ms 18 days ago 558th HumanoidCPU 734 107 106ms 20 days ago 559th KatieLG 🇬🇧 733 61 36ms 19 days ago 560th albanian-laundromat 733 87 400ms 19 days ago First Prev 481–560 of 1,084 Next Last