The Calendar hole will go live in approximately 5 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 721st HumanoidCPU 572 181 2,256ms 26 days ago 722nd Schmitt-Very-Cool 571 128 69ms 20 days ago 723rd dokutan 567 110 68ms 13 days ago 724th albanian-laundromat 563 104 1,258ms 30 Oct 2025 725th HumanoidCPU 562 111 110ms 26 days ago 726th CaedenHarper 🇨🇦 557 121 10ms 26 days ago 727th TheZwierzLF 🇵🇱 552 81 36ms 4 days ago 728th bitsandbeyond 🇳🇱 551 107 4ms 16 Nov 2025 729th prestosilver 🇺🇸 550 99 130ms 7 days ago 730th SirBogman 🇺🇸 548 59 5ms 23 days ago 731st HumanoidCPU 545 88 264ms 26 days ago 732nd dokutan 545 134 692ms 15 days ago 733rd Schmitt-Very-Cool 541 130 446ms 25 days ago 734th Schmitt-Very-Cool 541 142 27ms 21 days ago 735th emgordon154 538 79 3ms 24 Nov 2025 736th dokutan 535 357 12ms 28 Nov 2025 737th lacrosse 532 84 45ms 26 days ago 738th CLOStrophobic 🇮🇹 530 93 10ms 22 days ago 739th HumanoidCPU 529 95 73ms 27 days ago 740th aksyristos 526 85 54ms 23 days ago 741st aksyristos 526 146 27ms 23 days ago 742nd Schmitt-Very-Cool 516 160 265ms 21 days ago 743rd logalex8369 🇺🇸 514 96 10ms 7 days ago 744th bitsandbeyond 🇳🇱 512 131 116ms 27 days ago 745th dokutan 510 116 3ms 15 days ago 746th ravnskjaer 🇩🇰 506 139 337ms 11 days ago 747th OllieBoyne 🇬🇧 503 98 12ms 14 days ago 748th aksyristos 500 165 248ms 23 days ago 749th te-chnical 497 89 10ms 3 days ago 750th CaedenHarper 🇨🇦 497 94 7ms 27 days ago 751st MeWhenI 🇻🇦 488 80 32ms 24 Nov 2025 752nd bitsandbeyond 🇳🇱 470 126 3ms 31 Oct 2025 753rd CaedenHarper 🇨🇦 469 218 447ms 26 days ago 754th BREMAUCY 🇫🇷 466 165 27ms 23 days ago 755th DrPrettyman 461 107 26ms 3 days ago 756th HumanoidCPU 458 149 43ms 26 days ago 757th aksyristos 455 148 9ms 23 days ago 758th logalex8369 🇺🇸 451 98 10ms 7 days ago 759th dokutan 449 175 96ms 13 days ago 760th robbertvz 432 114 11ms 11 days ago 761st Schmitt-Very-Cool 413 116 268ms 21 days ago 762nd UnderKoen 🇳🇱 413 206 4ms 3 Nov 2025 763rd dokutan 395 94 6ms 12 days ago 764th dokutan 384 266 392ms 13 days ago 765th Msleizak 🇫🇷 381 126 279ms 27 days ago 766th BREMAUCY 🇫🇷 363 188 41ms 24 days ago 767th JOrE20 🇺🇸 360 253 7ms 27 days ago 768th HumanoidCPU 353 166 1,354ms 27 days ago 769th bitsandbeyond 🇳🇱 352 543 14ms 6 Nov 2025 770th aksyristos 334 228 9ms 23 days ago 771st JOrE20 🇺🇸 333 229 9ms 23 days ago 772nd JOrE20 🇺🇸 333 248 261ms 24 days ago 773rd aksyristos 332 220 78ms 23 days ago 774th dokutan 331 159 88ms 24 days ago 775th CaedenHarper 🇨🇦 330 88 52ms 27 days ago 776th dokutan 322 217 43ms 24 days ago 777th dokutan 320 200 14ms 28 Nov 2025 778th MeWhenI 🇻🇦 318 287 7ms 23 Nov 2025 779th aksyristos 315 194 3,712ms 23 days ago 780th KatieLG 🇬🇧 314 326 477ms 26 days ago 781st dokutan 310 274 1ms 28 Nov 2025 782nd Schmitt-Very-Cool 293 233 42ms 20 days ago 783rd BambooleanLogic 🇸🇪 275 161 10ms 5 days ago 784th JOrE20 🇺🇸 274 310 2ms 21 days ago 785th JOrE20 🇺🇸 267 180 746ms 24 days ago 786th stefangimmillaro 264 173 1ms 1 Nov 2025 787th dokutan 260 318 250ms 13 days ago 788th Schmitt-Very-Cool 252 115 48ms 21 days ago 789th aksyristos 250 211 267ms 23 days ago 790th dokutan 247 308 7ms 24 days ago 791st Andrey2001 242 204 9ms 22 days ago 792nd aksyristos 236 203 256ms 23 days ago 793rd dokutan 232 197 2ms 28 Nov 2025 794th dokutan 227 295 136ms 24 days ago 795th KatieLG 🇬🇧 223 327 61ms 26 days ago 796th KatieLG 🇬🇧 222 256 8ms 26 days ago 797th dokutan 221 195 141ms 24 days ago 798th dokutan 219 148 3ms 24 days ago 799th dokutan 198 360 9ms 24 days ago 800th dokutan 190 255 2ms 24 days ago First Prev 721–800 of 1,114 Next Last