The Calendar hole will go live in approximately 13 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 481st albanian-laundromat 790 74 3ms 25 days ago 482nd MeWhenI 🇻🇦 788 57 311ms 24 days ago 482nd CaedenHarper 🇨🇦 788 57 275ms 18 days ago 482nd bitsandbeyond 🇳🇱 788 57 203ms 18 days ago 485th dokutan 787 75 4ms 16 days ago 486th edsrzf 🇳🇿 786 93 66ms 17 days ago 487th Shanethegamer 🇺🇸 786 100 112ms 3 Nov 2025 488th ovs-code 🇩🇪 785 77 6ms 19 days ago 489th bitsandbeyond 🇳🇱 785 87 40ms 31 Oct 2025 489th blaztoma 🇱🇹 785 87 42ms 16 days ago 491st emgordon154 785 106 265ms 22 days ago 492nd CaedenHarper 🇨🇦 784 57 36ms 19 days ago 493rd MeWhenI 🇻🇦 783 62 1ms 25 days ago 494th albanian-laundromat 778 90 4ms 4 days ago 495th vhoulbreque 🇫🇷 778 101 110ms 16 days ago 496th emgordon154 777 57 137ms 22 days ago 497th albanian-laundromat 776 88 41ms 24 days ago 498th Shanethegamer 🇺🇸 774 62 241ms 4 Nov 2025 498th albanian-laundromat 774 62 701ms 25 days ago 500th emgordon154 774 87 11ms 24 days ago 500th snoozingnewt 🇨🇦 774 87 10ms 17 days ago 502nd dokutan 772 77 107ms 12 days ago 503rd dokutan 771 58 43ms 17 days ago 504th DialFrost 🇸🇬 771 65 582ms 16 days ago 505th rucin93 🇵🇱 770 102 119ms 20 days ago 505th madex 🇩🇪 770 102 107ms 16 days ago 507th albanian-laundromat 770 103 31ms 24 days ago 508th HumanoidCPU 769 74 129ms 19 days ago 508th Ripick 769 74 137ms 18 days ago 510th dokutan 766 61 783ms 19 days ago 511th MeWhenI 🇻🇦 766 77 4ms 24 days ago 512th CaedenHarper 🇨🇦 766 96 153ms 19 days ago 513th HumanoidCPU 765 62 355ms 19 days ago 513th Yewzir 🇧🇪 765 62 374ms 18 days ago 515th AlephSquirrel 763 38 63ms 17 days ago 516th CaedenHarper 🇨🇦 763 58 125ms 18 days ago 517th emgordon154 763 80 3,931ms 18 days ago 518th albanian-laundromat 763 92 349ms 25 days ago 519th madex 🇩🇪 762 80 2ms 16 days ago 520th dokutan 762 82 38ms 19 days ago 521st blaztoma 🇱🇹 761 63 256ms 16 days ago 522nd albanian-laundromat 759 75 128ms 22 days ago 523rd albanian-laundromat 758 64 2ms 25 days ago 524th albanian-laundromat 757 89 10ms 17 days ago 525th dokutan 754 62 6ms 4 days ago 526th MeWhenI 🇻🇦 753 97 70ms 24 days ago 527th DialFrost 🇸🇬 752 136 436ms 15 days ago 528th bitsandbeyond 🇳🇱 751 83 77ms 31 Oct 2025 529th duckyluuk 🇳🇱 750 95 8ms 30 Oct 2025 530th dokutan 749 59 9ms 20 days ago 531st bitsandbeyond 🇳🇱 748 90 10ms 31 Oct 2025 532nd HumanoidCPU 747 102 8ms 18 days ago 532nd bitsandbeyond 🇳🇱 747 102 9ms 18 days ago 534th CaedenHarper 🇨🇦 746 157 2,347ms 18 days ago 535th albanian-laundromat 744 64 2ms 25 days ago 536th MeWhenI 🇻🇦 742 71 87ms 25 days ago 536th snoozingnewt 🇨🇦 742 71 91ms 20 days ago 538th emgordon154 741 138 455ms 24 days ago 538th Shanethegamer 🇺🇸 741 138 432ms 14 days ago 540th blaztoma 🇱🇹 740 91 10ms 16 days ago 541st MeWhenI 🇻🇦 739 115 2ms 25 days ago 542nd iczelia 🇩🇪 736 60 9ms 16 days ago 543rd HumanoidCPU 734 107 106ms 18 days ago 544th KatieLG 🇬🇧 733 61 36ms 17 days ago 545th albanian-laundromat 732 87 400ms 17 days ago 546th MeWhenI 🇻🇦 732 92 13ms 25 days ago 547th vhoulbreque 🇫🇷 730 64 4ms 17 days ago 548th albanian-laundromat 728 101 149ms 25 days ago 549th MeWhenI 🇻🇦 727 51 5ms 25 days ago 550th dokutan 727 66 732ms 20 days ago 550th dokutan 727 66 253ms 17 days ago 552nd albanian-laundromat 727 98 9ms 17 days ago 553rd Yewzir 🇧🇪 725 105 8ms 18 days ago 554th MeWhenI 🇻🇦 725 141 425ms 14 days ago 555th albanian-laundromat 724 61 9ms 24 days ago 556th bitsandbeyond 🇳🇱 721 73 88ms 2 Nov 2025 557th GolfingSuccess 🇬🇷 720 99 8ms 5 Nov 2025 558th AlephSquirrel 718 85 4,383ms 17 days ago 559th dokutan 718 163 1,613ms 12 days ago 560th HumanoidCPU 717 85 2ms 19 days ago First Prev 481–560 of 1,068 Next Last