The Calendar hole will go live in approximately 34 hours. 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 638th btjones0 666 74 11ms 1 Dec 2025 638th RandGuy 666 74 11ms 2 Dec 2025 638th annaproxy 666 74 13ms 2 Dec 2025 638th aksyristos 666 74 11ms 26 days ago 638th hippalectryon-0 666 74 11ms 23 days ago 638th te-chnical 666 74 12ms 7 days ago 647th Yewzir 🇧🇪 665 92 2,990ms 30 Nov 2025 648th Yewzir 🇧🇪 662 116 27ms 30 Nov 2025 649th GolfingSuccess 🇬🇷 660 49 3ms 4 Nov 2025 650th bitsandbeyond 🇳🇱 660 119 111ms 31 Oct 2025 651st CaedenHarper 🇨🇦 660 157 2,347ms 30 Nov 2025 652nd msbranicky 658 93 2,878ms 26 days ago 653rd LostSyntax21 🇬🇧 657 75 20ms 30 Nov 2025 654th Shanethegamer 🇺🇸 657 102 116ms 2 Nov 2025 655th MeWhenI 🇻🇦 656 95 78ms 23 Nov 2025 656th bitsandbeyond 🇳🇱 655 75 94ms 5 Nov 2025 657th JOrE20 🇺🇸 651 68 10ms 23 hours ago 658th GolfingSuccess 🇬🇷 651 157 447ms 23 days ago 659th albanian-laundromat 650 91 4ms 24 Nov 2025 660th bitsandbeyond 🇳🇱 650 98 9ms 16 Nov 2025 661st Ripick 649 76 12ms 14 Nov 2025 661st scpchicken 🇵🇼 649 76 11ms 25 days ago 663rd AutumnWind75 649 119 385ms 20 days ago 664th BREMAUCY 🇫🇷 642 74 454ms 1 Dec 2025 665th AlephSquirrel 641 105 8ms 30 Nov 2025 666th mousetail 🇳🇱 640 77 11ms 23 Nov 2025 667th GolfingSuccess 🇬🇷 635 72 1ms 30 Oct 2025 668th dokutan 635 163 1,613ms 24 days ago 669th HumanoidCPU 634 122 58ms 29 Nov 2025 670th HumanoidCPU 633 111 370ms 29 Nov 2025 671st Bmrl7 632 78 11ms 10 days ago 672nd BREMAUCY 🇫🇷 631 97 3,199ms 27 days ago 673rd msbranicky 630 131 269ms 26 days ago 674th stackofbears 629 62 39ms 7 days ago 675th prestosilver 🇺🇸 629 97 2ms 27 days ago 676th aksyristos 628 123 54ms 26 days ago 677th msbranicky 624 79 11ms 26 Nov 2025 677th nemoyatpeace 624 79 16ms 2 days ago 679th msbranicky 624 108 8ms 26 days ago 680th alexsave 623 71 9ms 30 Nov 2025 681st HumanoidCPU 620 85 90ms 29 Nov 2025 682nd HumanoidCPU 620 105 111ms 29 Nov 2025 683rd albanian-laundromat 617 99 2ms 30 Nov 2025 684th MeWhenI 🇻🇦 616 76 5ms 23 Nov 2025 685th IISResetMe 616 78 273ms 30 Nov 2025 686th albanian-laundromat 616 82 4ms 25 Nov 2025 687th MeWhenI 🇻🇦 615 104 17ms 23 Nov 2025 688th HumanoidCPU 614 72 9ms 29 Nov 2025 688th olleicua 🇺🇸 614 72 10ms 22 days ago 690th JOrE20 🇺🇸 613 102 43ms 28 Nov 2025 691st tomh1012 613 104 415ms 1 Dec 2025 692nd Waffle3z 609 87 2ms 3 days ago 693rd HumanoidCPU 609 121 407ms 30 Nov 2025 694th AlephSquirrel 608 79 248ms 30 Nov 2025 695th HumanoidCPU 608 105 404ms 29 Nov 2025 696th MeWhenI 🇻🇦 605 100 6ms 24 Nov 2025 697th D-MOVE 🇵🇭 604 74 39ms 20 days ago 698th MeWhenI 🇻🇦 604 111 125ms 24 Nov 2025 699th msbranicky 601 79 448ms 26 days ago 700th themoonisacheese 601 82 11ms 20 days ago 701st Schmitt-Very-Cool 600 127 10ms 24 days ago 702nd CaedenHarper 🇨🇦 599 88 107ms 30 Nov 2025 703rd Nicronmil 598 74 9ms 19 days ago 703rd two-bad 🇬🇧 598 74 10ms 12 days ago 705th anter69 🇭🇺 597 77 809ms 24 days ago 706th olleicua 🇺🇸 596 75 36ms 22 days ago 707th HumanoidCPU 595 107 9ms 29 Nov 2025 708th RDShah 594 83 11ms 1 Dec 2025 709th Natanaelel 🇸🇪 594 139 263ms 4 days ago 710th CaedenHarper 🇨🇦 593 81 240ms 30 Nov 2025 711th KatieLG 🇬🇧 589 108 8ms 30 Nov 2025 712th HumanoidCPU 588 74 130ms 29 Nov 2025 713th FortuiteMan 🇫🇷 586 114 13ms 5 days ago 714th BREMAUCY 🇫🇷 586 141 260ms 2 Dec 2025 715th Yewzir 🇧🇪 585 82 285ms 30 Nov 2025 716th aksyristos 585 83 2ms 26 days ago 717th BREMAUCY 🇫🇷 585 109 461ms 1 Dec 2025 718th MeWhenI 🇻🇦 583 74 106ms 24 Nov 2025 719th dokutan 582 73 216ms 28 Nov 2025 720th Protothor 582 76 9ms 26 days ago First Prev 641–720 of 1,121 Next Last