The Calendar hole will go live in approximately 7 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 TheZwierzLF 🇵🇱 552 81 32ms 2 days ago 722nd bitsandbeyond 🇳🇱 551 107 4ms 16 Nov 2025 723rd prestosilver 🇺🇸 550 99 130ms 5 days ago 724th SirBogman 🇺🇸 548 59 5ms 21 days ago 725th HumanoidCPU 545 88 264ms 24 days ago 726th dokutan 545 134 692ms 13 days ago 727th Schmitt-Very-Cool 541 130 446ms 23 days ago 728th Schmitt-Very-Cool 540 142 27ms 19 days ago 729th emgordon154 538 79 3ms 24 Nov 2025 730th dokutan 535 357 12ms 26 days ago 731st lacrosse 532 84 42ms 24 days ago 732nd CLOStrophobic 🇮🇹 530 93 10ms 20 days ago 733rd HumanoidCPU 529 95 76ms 25 days ago 734th aksyristos 526 85 36ms 21 days ago 735th aksyristos 526 146 27ms 21 days ago 736th Schmitt-Very-Cool 515 160 265ms 19 days ago 737th logalex8369 🇺🇸 513 96 10ms 5 days ago 738th bitsandbeyond 🇳🇱 512 131 116ms 25 days ago 739th dokutan 510 116 3ms 13 days ago 740th ravnskjaer 🇩🇰 506 139 337ms 9 days ago 741st OllieBoyne 🇬🇧 503 98 12ms 12 days ago 742nd aksyristos 500 165 248ms 21 days ago 743rd te-chnical 497 89 11ms 34 hours ago 744th CaedenHarper 🇨🇦 497 94 7ms 25 days ago 745th MeWhenI 🇻🇦 488 80 32ms 24 Nov 2025 746th bitsandbeyond 🇳🇱 470 126 3ms 31 Oct 2025 747th CaedenHarper 🇨🇦 469 218 447ms 24 days ago 748th BREMAUCY 🇫🇷 465 165 27ms 21 days ago 749th DrPrettyman 461 107 26ms 2 days ago 750th HumanoidCPU 458 149 43ms 24 days ago 751st aksyristos 455 148 9ms 21 days ago 752nd logalex8369 🇺🇸 451 98 10ms 5 days ago 753rd dokutan 449 175 96ms 11 days ago 754th robbertvz 432 114 11ms 9 days ago 755th Schmitt-Very-Cool 413 116 277ms 19 days ago 756th UnderKoen 🇳🇱 413 206 4ms 3 Nov 2025 757th dokutan 395 94 6ms 10 days ago 758th dokutan 384 266 392ms 11 days ago 759th Msleizak 🇫🇷 381 126 279ms 26 days ago 760th BREMAUCY 🇫🇷 363 188 41ms 22 days ago 761st JOrE20 🇺🇸 360 253 7ms 26 days ago 762nd HumanoidCPU 353 166 1,354ms 25 days ago 763rd bitsandbeyond 🇳🇱 352 543 14ms 6 Nov 2025 764th aksyristos 334 228 9ms 21 days ago 765th JOrE20 🇺🇸 333 229 9ms 21 days ago 766th JOrE20 🇺🇸 333 248 261ms 22 days ago 767th aksyristos 332 220 78ms 21 days ago 768th dokutan 331 159 88ms 22 days ago 769th CaedenHarper 🇨🇦 330 88 49ms 25 days ago 770th dokutan 322 217 44ms 22 days ago 771st dokutan 320 200 14ms 26 days ago 772nd MeWhenI 🇻🇦 318 287 7ms 23 Nov 2025 773rd aksyristos 315 194 3,712ms 21 days ago 774th KatieLG 🇬🇧 314 326 477ms 24 days ago 775th dokutan 310 274 1ms 26 days ago 776th Schmitt-Very-Cool 293 233 109ms 18 days ago 777th BambooleanLogic 🇸🇪 275 161 10ms 3 days ago 778th JOrE20 🇺🇸 274 310 2ms 19 days ago 779th JOrE20 🇺🇸 267 180 746ms 22 days ago 780th stefangimmillaro 264 173 1ms 1 Nov 2025 781st dokutan 259 318 250ms 11 days ago 782nd Schmitt-Very-Cool 252 115 55ms 19 days ago 783rd aksyristos 250 211 267ms 21 days ago 784th dokutan 247 308 7ms 22 days ago 785th Andrey2001 242 204 9ms 20 days ago 786th aksyristos 236 203 256ms 21 days ago 787th dokutan 232 197 2ms 26 days ago 788th dokutan 227 295 136ms 22 days ago 789th KatieLG 🇬🇧 223 327 69ms 24 days ago 790th KatieLG 🇬🇧 222 256 8ms 24 days ago 791st dokutan 221 195 141ms 22 days ago 792nd dokutan 219 148 3ms 22 days ago 793rd dokutan 198 360 11ms 22 days ago 794th dokutan 190 255 2ms 22 days ago 795th JDiLenarda 🇫🇷 187 313 1,378ms 19 days ago 796th dokutan 186 343 19ms 22 days ago 797th dokutan 180 236 3ms 22 days ago 798th JOrE20 🇺🇸 177 268 570ms 22 days ago 799th dokutan 177 283 634ms 22 days ago 800th aksyristos 168 406 41ms 21 days ago First Prev 721–800 of 1,107 Next Last