The Calendar hole will go live in approximately 11 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 721st lacrosse 532 84 54ms 21 days ago 721st TheZwierzLF 🇵🇱 532 84 42ms 4 days ago 723rd HumanoidCPU 528 95 76ms 21 days ago 724th aksyristos 526 85 52ms 17 days ago 725th aksyristos 526 146 27ms 17 days ago 726th logalex8369 🇺🇸 523 96 10ms 2 days ago 727th Schmitt-Very-Cool 515 160 265ms 15 days ago 728th OllieBoyne 🇬🇧 512 98 12ms 9 days ago 729th bitsandbeyond 🇳🇱 512 131 116ms 22 days ago 730th ravnskjaer 🇩🇰 506 139 337ms 5 days ago 731st bitsandbeyond 🇳🇱 503 126 3ms 31 Oct 2025 732nd aksyristos 500 165 248ms 17 days ago 733rd CaedenHarper 🇨🇦 497 94 7ms 21 days ago 734th MeWhenI 🇻🇦 487 80 32ms 26 days ago 735th CaedenHarper 🇨🇦 469 218 447ms 20 days ago 736th BREMAUCY 🇫🇷 465 165 27ms 18 days ago 737th HumanoidCPU 458 149 43ms 20 days ago 738th aksyristos 455 148 9ms 17 days ago 739th dokutan 454 175 96ms 8 days ago 740th logalex8369 🇺🇸 451 98 17ms 2 days ago 741st robbertvz 440 114 11ms 5 days ago 742nd dokutan 439 161 67ms 8 days ago 743rd Schmitt-Very-Cool 413 116 277ms 15 days ago 744th UnderKoen 🇳🇱 413 206 4ms 3 Nov 2025 745th dokutan 399 95 6ms 7 days ago 746th dokutan 384 266 392ms 8 days ago 747th dokutan 382 166 2ms 17 days ago 748th Msleizak 🇫🇷 381 126 279ms 22 days ago 749th dokutan 373 196 744ms 15 days ago 750th dokutan 363 122 130ms 19 days ago 751st BREMAUCY 🇫🇷 363 188 41ms 18 days ago 752nd HumanoidCPU 362 166 1,354ms 21 days ago 753rd JOrE20 🇺🇸 360 253 7ms 22 days ago 754th bitsandbeyond 🇳🇱 352 543 14ms 6 Nov 2025 755th aksyristos 334 228 9ms 17 days ago 756th JOrE20 🇺🇸 333 229 9ms 18 days ago 757th JOrE20 🇺🇸 333 248 261ms 19 days ago 758th dokutan 332 200 14ms 22 days ago 759th aksyristos 332 220 78ms 17 days ago 760th CaedenHarper 🇨🇦 330 88 75ms 22 days ago 761st MeWhenI 🇻🇦 318 287 7ms 27 days ago 762nd aksyristos 315 194 4,208ms 17 days ago 763rd KatieLG 🇬🇧 314 326 477ms 20 days ago 764th dokutan 310 274 1ms 22 days ago 765th Schmitt-Very-Cool 293 233 109ms 14 days ago 766th JOrE20 🇺🇸 274 310 2ms 16 days ago 767th JOrE20 🇺🇸 267 180 746ms 19 days ago 768th stefangimmillaro 264 173 1ms 1 Nov 2025 769th dokutan 259 318 250ms 8 days ago 770th Schmitt-Very-Cool 252 115 73ms 15 days ago 771st aksyristos 250 211 267ms 17 days ago 772nd dokutan 247 308 7ms 19 days ago 773rd Andrey2001 246 204 9ms 16 days ago 774th dokutan 238 221 81ms 19 days ago 775th aksyristos 236 203 256ms 17 days ago 776th dokutan 232 197 2ms 22 days ago 777th dokutan 230 303 41ms 19 days ago 778th KatieLG 🇬🇧 228 256 8ms 20 days ago 779th dokutan 227 295 136ms 19 days ago 780th KatieLG 🇬🇧 223 327 69ms 20 days ago 781st dokutan 198 360 11ms 19 days ago 782nd JDiLenarda 🇫🇷 192 313 1,378ms 15 days ago 783rd dokutan 190 255 2ms 19 days ago 784th dokutan 186 343 19ms 19 days ago 785th JOrE20 🇺🇸 184 268 570ms 19 days ago 786th dokutan 180 236 3ms 19 days ago 787th dokutan 177 283 634ms 19 days ago 788th aksyristos 168 406 41ms 17 days ago 789th dokutan 167 194 2ms 22 days ago 790th dokutan 166 234 33ms 22 days ago 791st dokutan 158 279 137ms 19 days ago 792nd dokutan 152 191 41ms 19 days ago 793rd KatieLG 🇬🇧 150 323 2ms 20 days ago 794th JOrE20 🇺🇸 149 459 41ms 18 days ago 795th JOrE20 🇺🇸 146 198 58ms 17 days ago 796th JOrE20 🇺🇸 139 1,229 3ms 5 days ago 797th CaedenHarper 🇨🇦 136 494 22ms 21 days ago 798th rucin93 🇵🇱 129 1,324 3ms 30 Oct 2025 799th ian-h-chamberlain 🇺🇸 113 574 116ms 18 days ago 800th tatzyr 🇯🇵 111 403 47ms 18 days ago First Prev 721–800 of 1,104 Next Last