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 477th anter69 🇭🇺 795 62 13ms 19 days ago 477th inventshah 795 62 10ms 12 days ago 477th SB-945 795 62 12ms 32 hours ago 484th Shanethegamer 🇺🇸 794 92 73ms 3 Nov 2025 484th blaztoma 🇱🇹 794 92 64ms 18 days ago 486th albanian-laundromat 793 77 2,962ms 27 days ago 487th neosimsim 793 96 8ms 27 days ago 488th Shanethegamer 🇺🇸 792 62 94ms 3 Nov 2025 489th Shanethegamer 🇺🇸 791 55 133ms 4 Nov 2025 489th emgordon154 791 55 141ms 13 hours ago 491st albanian-laundromat 791 60 374ms 27 days ago 492nd MeWhenI 🇻🇦 791 79 39ms 27 days ago 493rd albanian-laundromat 790 74 3ms 27 days ago 494th MeWhenI 🇻🇦 788 57 311ms 26 days ago 494th CaedenHarper 🇨🇦 788 57 275ms 20 days ago 494th bitsandbeyond 🇳🇱 788 57 203ms 20 days ago 497th dokutan 787 75 4ms 18 days ago 498th edsrzf 🇳🇿 786 93 66ms 19 days ago 499th Shanethegamer 🇺🇸 786 100 112ms 3 Nov 2025 500th Natanaelel 🇸🇪 785 55 127ms 4 Nov 2025 501st CaedenHarper 🇨🇦 785 57 36ms 21 days ago 502nd ovs-code 🇩🇪 785 77 6ms 21 days ago 503rd bitsandbeyond 🇳🇱 785 87 40ms 31 Oct 2025 503rd blaztoma 🇱🇹 785 87 42ms 19 days ago 505th MeWhenI 🇻🇦 783 62 1ms 27 days ago 506th MeWhenI 🇻🇦 779 63 96ms 27 days ago 507th albanian-laundromat 778 90 4ms 6 days ago 508th vhoulbreque 🇫🇷 778 101 110ms 18 days ago 509th emgordon154 778 106 265ms 24 days ago 510th MeWhenI 🇻🇦 776 56 127ms 27 days ago 510th dokutan 776 56 130ms 19 days ago 512th albanian-laundromat 776 88 41ms 26 days ago 513th Shanethegamer 🇺🇸 774 62 241ms 4 Nov 2025 513th albanian-laundromat 774 62 701ms 27 days ago 515th emgordon154 774 87 11ms 26 days ago 515th snoozingnewt 🇨🇦 774 87 10ms 19 days ago 517th dokutan 772 77 107ms 14 days ago 518th dokutan 771 58 43ms 19 days ago 519th DialFrost 🇸🇬 771 65 582ms 18 days ago 520th rucin93 🇵🇱 770 102 119ms 22 days ago 520th madex 🇩🇪 770 102 107ms 18 days ago 522nd albanian-laundromat 770 103 31ms 26 days ago 523rd HumanoidCPU 769 74 129ms 21 days ago 523rd Ripick 769 74 137ms 20 days ago 525th CaedenHarper 🇨🇦 767 64 96ms 20 days ago 526th HumanoidCPU 766 62 355ms 21 days ago 526th Yewzir 🇧🇪 766 62 374ms 20 days ago 528th MeWhenI 🇻🇦 766 77 4ms 26 days ago 529th CaedenHarper 🇨🇦 766 96 153ms 21 days ago 530th albanian-laundromat 764 92 349ms 27 days ago 531st AlephSquirrel 763 38 63ms 19 days ago 532nd emgordon154 763 80 3,931ms 20 days ago 533rd madex 🇩🇪 762 80 2ms 18 days ago 534th dokutan 762 82 38ms 21 days ago 535th blaztoma 🇱🇹 761 63 256ms 19 days ago 536th albanian-laundromat 759 75 128ms 24 days ago 537th albanian-laundromat 758 64 2ms 27 days ago 538th albanian-laundromat 757 89 10ms 19 days ago 539th dokutan 754 61 783ms 21 days ago 540th dokutan 754 62 6ms 6 days ago 541st H3XDaemon 753 81 2ms 7 hours ago 542nd MeWhenI 🇻🇦 753 97 70ms 26 days ago 543rd DialFrost 🇸🇬 752 136 436ms 17 days ago 544th bitsandbeyond 🇳🇱 751 83 77ms 31 Oct 2025 545th CaedenHarper 🇨🇦 750 58 125ms 20 days ago 546th duckyluuk 🇳🇱 750 95 8ms 30 Oct 2025 547th dokutan 749 59 9ms 22 days ago 548th bitsandbeyond 🇳🇱 748 90 10ms 31 Oct 2025 549th HumanoidCPU 747 102 8ms 20 days ago 549th bitsandbeyond 🇳🇱 747 102 9ms 20 days ago 551st CaedenHarper 🇨🇦 746 157 2,347ms 20 days ago 552nd albanian-laundromat 744 64 2ms 27 days ago 553rd MeWhenI 🇻🇦 742 71 87ms 27 days ago 553rd snoozingnewt 🇨🇦 742 71 91ms 22 days ago 555th emgordon154 741 138 455ms 26 days ago 555th Shanethegamer 🇺🇸 741 138 432ms 16 days ago 557th blaztoma 🇱🇹 740 91 10ms 18 days ago 558th MeWhenI 🇻🇦 739 115 2ms 27 days ago 559th iczelia 🇩🇪 737 60 9ms 18 days ago 560th HumanoidCPU 734 107 106ms 20 days ago First Prev 481–560 of 1,088 Next Last