The Calendar hole will go live in approximately 6 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 Schmitt-Very-Cool 571 128 69ms 19 days ago 722nd dokutan 567 110 68ms 12 days ago 723rd albanian-laundromat 563 104 1,258ms 30 Oct 2025 724th HumanoidCPU 562 111 110ms 25 days ago 725th CaedenHarper 🇨🇦 557 121 10ms 25 days ago 726th TheZwierzLF 🇵🇱 552 81 36ms 3 days ago 727th bitsandbeyond 🇳🇱 551 107 4ms 16 Nov 2025 728th prestosilver 🇺🇸 550 99 130ms 6 days ago 729th SirBogman 🇺🇸 548 59 5ms 22 days ago 730th HumanoidCPU 545 88 264ms 25 days ago 731st dokutan 545 134 692ms 14 days ago 732nd Schmitt-Very-Cool 541 130 446ms 24 days ago 733rd Schmitt-Very-Cool 541 142 27ms 20 days ago 734th emgordon154 538 79 3ms 24 Nov 2025 735th dokutan 535 357 12ms 27 days ago 736th lacrosse 532 84 45ms 25 days ago 737th CLOStrophobic 🇮🇹 530 93 10ms 21 days ago 738th HumanoidCPU 529 95 73ms 26 days ago 739th aksyristos 526 85 54ms 22 days ago 740th aksyristos 526 146 27ms 22 days ago 741st Schmitt-Very-Cool 516 160 265ms 20 days ago 742nd logalex8369 🇺🇸 514 96 10ms 6 days ago 743rd bitsandbeyond 🇳🇱 512 131 116ms 26 days ago 744th dokutan 510 116 3ms 14 days ago 745th ravnskjaer 🇩🇰 506 139 337ms 10 days ago 746th OllieBoyne 🇬🇧 503 98 12ms 13 days ago 747th aksyristos 500 165 248ms 22 days ago 748th te-chnical 497 89 10ms 2 days ago 749th CaedenHarper 🇨🇦 497 94 7ms 26 days ago 750th MeWhenI 🇻🇦 488 80 32ms 24 Nov 2025 751st bitsandbeyond 🇳🇱 470 126 3ms 31 Oct 2025 752nd CaedenHarper 🇨🇦 469 218 447ms 25 days ago 753rd BREMAUCY 🇫🇷 466 165 27ms 22 days ago 754th DrPrettyman 461 107 26ms 3 days ago 755th HumanoidCPU 458 149 43ms 25 days ago 756th aksyristos 455 148 9ms 22 days ago 757th logalex8369 🇺🇸 451 98 10ms 6 days ago 758th dokutan 449 175 96ms 12 days ago 759th robbertvz 432 114 11ms 10 days ago 760th Schmitt-Very-Cool 413 116 268ms 20 days ago 761st UnderKoen 🇳🇱 413 206 4ms 3 Nov 2025 762nd dokutan 395 94 6ms 11 days ago 763rd dokutan 384 266 392ms 12 days ago 764th Msleizak 🇫🇷 381 126 279ms 27 days ago 765th BREMAUCY 🇫🇷 363 188 41ms 23 days ago 766th JOrE20 🇺🇸 360 253 7ms 27 days ago 767th HumanoidCPU 353 166 1,354ms 26 days ago 768th bitsandbeyond 🇳🇱 352 543 14ms 6 Nov 2025 769th aksyristos 334 228 9ms 22 days ago 770th JOrE20 🇺🇸 333 229 9ms 22 days ago 771st JOrE20 🇺🇸 333 248 261ms 23 days ago 772nd aksyristos 332 220 78ms 22 days ago 773rd dokutan 331 159 88ms 23 days ago 774th CaedenHarper 🇨🇦 330 88 52ms 26 days ago 775th dokutan 322 217 43ms 23 days ago 776th dokutan 320 200 14ms 27 days ago 777th MeWhenI 🇻🇦 318 287 7ms 23 Nov 2025 778th aksyristos 315 194 3,712ms 22 days ago 779th KatieLG 🇬🇧 314 326 477ms 25 days ago 780th dokutan 310 274 1ms 27 days ago 781st Schmitt-Very-Cool 293 233 42ms 19 days ago 782nd BambooleanLogic 🇸🇪 275 161 10ms 4 days ago 783rd JOrE20 🇺🇸 274 310 2ms 20 days ago 784th JOrE20 🇺🇸 267 180 746ms 23 days ago 785th stefangimmillaro 264 173 1ms 1 Nov 2025 786th dokutan 260 318 250ms 12 days ago 787th Schmitt-Very-Cool 252 115 48ms 20 days ago 788th aksyristos 250 211 267ms 22 days ago 789th dokutan 247 308 7ms 23 days ago 790th Andrey2001 242 204 9ms 21 days ago 791st aksyristos 236 203 256ms 22 days ago 792nd dokutan 232 197 2ms 27 days ago 793rd dokutan 227 295 136ms 23 days ago 794th KatieLG 🇬🇧 223 327 61ms 25 days ago 795th KatieLG 🇬🇧 222 256 8ms 25 days ago 796th dokutan 221 195 141ms 23 days ago 797th dokutan 219 148 3ms 23 days ago 798th dokutan 198 360 9ms 23 days ago 799th dokutan 190 255 2ms 23 days ago 800th JDiLenarda 🇫🇷 187 313 1,378ms 20 days ago First Prev 721–800 of 1,113 Next Last