The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
Tower of Hanoi in all languages in bytes. 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 Bytes Time Submitted 481st dokutan 805 61 92ms 23 days ago 482nd CaedenHarper 🇨🇦 805 74 101ms 22 days ago 483rd Maznek 804 55 9ms 12 days ago 484th CaedenHarper 🇨🇦 803 88 78ms 22 days ago 485th MeWhenI 🇻🇦 802 53 3ms 23 days ago 486th CLOStrophobic 🇮🇹 802 95 8ms 18 days ago 487th MeWhenI 🇻🇦 801 63 5ms 24 Nov 2025 488th albanian-laundromat 801 78 41ms 24 Nov 2025 489th dokutan 801 92 378ms 24 days ago 490th albanian-laundromat 801 103 262ms 23 Nov 2025 491st Natanaelel 🇸🇪 800 55 127ms 4 Nov 2025 492nd snoozingnewt 🇨🇦 800 60 726ms 21 days ago 493rd DialFrost 🇸🇬 798 66 125ms 19 days ago 494th albanian-laundromat 794 77 2,962ms 23 Nov 2025 495th Shanethegamer 🇺🇸 794 92 73ms 3 Nov 2025 495th blaztoma 🇱🇹 794 92 64ms 20 days ago 497th Shanethegamer 🇺🇸 794 100 112ms 3 Nov 2025 498th neosimsim 793 96 8ms 23 Nov 2025 499th MeWhenI 🇻🇦 792 56 127ms 23 Nov 2025 500th Shanethegamer 🇺🇸 792 62 94ms 3 Nov 2025 501st bitsandbeyond 🇳🇱 792 74 1,242ms 31 Oct 2025 502nd MeWhenI 🇻🇦 791 79 39ms 23 Nov 2025 503rd bitsandbeyond 🇳🇱 790 72 3ms 2 Nov 2025 504th dokutan 787 75 4ms 20 days ago 505th edsrzf 🇳🇿 786 93 66ms 21 days ago 506th vhoulbreque 🇫🇷 786 101 110ms 20 days ago 507th CaedenHarper 🇨🇦 785 57 36ms 23 days ago 508th ovs-code 🇩🇪 785 77 6ms 23 days ago 509th bitsandbeyond 🇳🇱 785 87 40ms 31 Oct 2025 509th blaztoma 🇱🇹 785 87 42ms 21 days ago 511th emgordon154 784 78 4,266ms 43 hours ago 512th MeWhenI 🇻🇦 783 62 1ms 23 Nov 2025 513th emgordon154 783 86 17ms 43 hours ago 514th MeWhenI 🇻🇦 779 63 96ms 23 Nov 2025 515th rucin93 🇵🇱 779 102 119ms 24 days ago 515th madex 🇩🇪 779 102 107ms 20 days ago 517th bitsandbeyond 🇳🇱 778 70 119ms 2 Nov 2025 518th albanian-laundromat 778 90 4ms 8 days ago 519th emgordon154 778 106 265ms 26 days ago 520th albanian-laundromat 776 88 41ms 24 Nov 2025 521st Shanethegamer 🇺🇸 774 62 241ms 4 Nov 2025 521st albanian-laundromat 774 62 701ms 23 Nov 2025 523rd snoozingnewt 🇨🇦 774 87 10ms 21 days ago 524th DialFrost 🇸🇬 773 65 582ms 20 days ago 525th dokutan 773 77 107ms 16 days ago 526th albanian-laundromat 770 103 31ms 24 Nov 2025 527th albanian-laundromat 769 74 3ms 23 Nov 2025 528th CaedenHarper 🇨🇦 768 96 153ms 23 days ago 529th CaedenHarper 🇨🇦 767 64 96ms 22 days ago 530th MeWhenI 🇻🇦 766 77 4ms 24 Nov 2025 531st CaedenHarper 🇨🇦 764 58 125ms 22 days ago 532nd albanian-laundromat 764 92 349ms 23 Nov 2025 533rd AlephSquirrel 763 38 63ms 21 days ago 534th madex 🇩🇪 762 80 2ms 20 days ago 535th dokutan 762 82 38ms 23 days ago 536th blaztoma 🇱🇹 761 63 256ms 20 days ago 537th MeWhenI 🇻🇦 761 136 1,783ms 23 Nov 2025 537th emgordon154 761 136 1,699ms 24 Nov 2025 539th Shanethegamer 🇺🇸 760 93 78ms 2 Nov 2025 540th albanian-laundromat 758 64 2ms 23 Nov 2025 541st albanian-laundromat 757 89 10ms 21 days ago 542nd dokutan 754 61 783ms 23 days ago 543rd dokutan 754 62 6ms 8 days ago 544th H3XDaemon 753 81 2ms 2 days ago 545th MeWhenI 🇻🇦 753 97 70ms 24 Nov 2025 546th DialFrost 🇸🇬 752 136 436ms 19 days ago 547th duckyluuk 🇳🇱 750 95 8ms 30 Oct 2025 548th dokutan 749 59 9ms 24 days ago 549th bitsandbeyond 🇳🇱 748 90 10ms 31 Oct 2025 550th HumanoidCPU 747 102 8ms 22 days ago 550th bitsandbeyond 🇳🇱 747 102 9ms 22 days ago 552nd MeWhenI 🇻🇦 745 57 311ms 24 Nov 2025 552nd CaedenHarper 🇨🇦 745 57 275ms 22 days ago 552nd bitsandbeyond 🇳🇱 745 57 203ms 22 days ago 555th albanian-laundromat 745 64 2ms 23 Nov 2025 556th MeWhenI 🇻🇦 744 95 78ms 23 Nov 2025 557th MeWhenI 🇻🇦 742 71 87ms 23 Nov 2025 557th snoozingnewt 🇨🇦 742 71 91ms 24 days ago 559th HumanoidCPU 742 107 106ms 22 days ago 560th emgordon154 741 138 455ms 24 Nov 2025 First Prev 481–560 of 1,116 Next Last